284 lines
13 KiB
JSON
284 lines
13 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-9494",
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"assignerOrgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
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"state": "PUBLISHED",
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"assignerShortName": "canonical",
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"dateReserved": "2026-05-25T08:23:24.573Z",
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"datePublished": "2026-07-16T12:12:27.447Z",
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"dateUpdated": "2026-07-16T15:11:07.229Z"
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},
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"containers": {
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"cna": {
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"title": "ubuntu-pro-client Information Disclosure via Cleartext Bearer Token Exposure in Process Command Line",
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"datePublic": "2026-07-16T12:00:00.000Z",
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"cweId": "CWE-214",
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"description": "CWE-214 Invocation of process using visible sensitive information",
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"type": "CWE"
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}
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]
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}
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],
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"impacts": [
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{
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"capecId": "CAPEC-13",
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"descriptions": [
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{
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"lang": "en",
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"value": "CAPEC-13 Subverting Environment Variable Values"
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}
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]
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}
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],
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"affected": [
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{
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"vendor": "Canonical",
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"product": "ubuntu-pro-client (ubuntu-advantage-tools)",
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"platforms": [
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"Linux"
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],
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"collectionURL": "https://github.com/canonical/",
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"packageName": "ubuntu-pro-client",
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"repo": "https://github.com/canonical/ubuntu-pro-client",
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"versions": [
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{
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"status": "affected",
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"version": "0",
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"lessThan": "37.3",
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"versionType": "python"
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}
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],
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"defaultStatus": "unaffected"
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},
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{
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"vendor": "Canonical",
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"product": "Ubuntu 26.04 LTS",
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"platforms": [
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"Linux"
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],
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"collectionURL": "https://launchpad.net/ubuntu/resolute",
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"packageName": "ubuntu-advantage-tools",
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"repo": "https://launchpad.net/ubuntu/+source/ubuntu-advantage-tools",
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"versions": [
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{
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"status": "unaffected",
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"version": "37.2ubuntu0.1",
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"versionType": "dpkg"
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}
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],
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"defaultStatus": "affected"
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},
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{
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"vendor": "Canonical",
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"product": "Ubuntu 24.04 LTS",
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"platforms": [
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"Linux"
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],
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"collectionURL": "https://launchpad.net/ubuntu/noble",
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"packageName": "ubuntu-advantage-tools",
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"repo": "https://launchpad.net/ubuntu/+source/ubuntu-advantage-tools",
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"versions": [
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{
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"status": "unaffected",
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"version": "37.2ubuntu~24.04.1",
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"versionType": "dpkg"
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}
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],
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"defaultStatus": "affected"
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},
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{
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"vendor": "Canonical",
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"product": "Ubuntu 22.04 LTS",
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"platforms": [
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"Linux"
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],
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"collectionURL": "https://launchpad.net/ubuntu/jammy",
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"packageName": "ubuntu-advantage-tools",
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"repo": "https://launchpad.net/ubuntu/+source/ubuntu-advantage-tools",
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"versions": [
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{
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"status": "unaffected",
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"version": "37.2ubuntu~22.04.1",
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"versionType": "dpkg"
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}
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],
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"defaultStatus": "affected"
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},
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{
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"vendor": "Canonical",
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"product": "Ubuntu 20.04 LTS",
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"platforms": [
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"Linux"
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],
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"collectionURL": "https://launchpad.net/ubuntu/focal",
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"packageName": "ubuntu-advantage-tools",
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"repo": "https://launchpad.net/ubuntu/+source/ubuntu-advantage-tools",
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"versions": [
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{
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"status": "unaffected",
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"version": "37.1ubuntu0~20.04.1",
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"versionType": "dpkg"
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}
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],
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"defaultStatus": "affected"
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},
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{
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"vendor": "Canonical",
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"product": "Ubuntu 18.04 LTS",
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"platforms": [
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"Linux"
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],
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"collectionURL": "https://launchpad.net/ubuntu/bionic",
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"packageName": "ubuntu-advantage-tools",
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"repo": "https://launchpad.net/ubuntu/+source/ubuntu-advantage-tools",
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"versions": [
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{
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"status": "unaffected",
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"version": "37.1ubuntu0~18.04.1",
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"versionType": "dpkg"
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}
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],
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"defaultStatus": "affected"
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},
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{
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"vendor": "Canonical",
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"product": "Ubuntu 16.04 LTS",
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"platforms": [
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"Linux"
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],
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"collectionURL": "https://launchpad.net/ubuntu/xenial",
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"packageName": "ubuntu-advantage-tools",
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"repo": "https://launchpad.net/ubuntu/+source/ubuntu-advantage-tools",
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"versions": [
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{
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"status": "unaffected",
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"version": "37.1ubuntu0~16.04.1",
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"versionType": "dpkg"
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}
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],
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"defaultStatus": "affected"
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},
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{
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"vendor": "Canonical",
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"product": "Ubuntu 14.04 LTS",
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"platforms": [
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"Linux"
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],
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"collectionURL": "https://launchpad.net/ubuntu/trusty",
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"packageName": "ubuntu-advantage-tools",
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"repo": "https://launchpad.net/ubuntu/+source/ubuntu-advantage-tools",
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"versions": [
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{
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"status": "unaffected",
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"version": "19.7ubuntu0.1",
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"versionType": "dpkg"
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}
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],
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"defaultStatus": "affected"
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "An information disclosure vulnerability exists in Canonical ubuntu-pro-client (formerly ubuntu-advantage-tools). The client validates Ubuntu Pro APT credentials by executing /usr/lib/apt/apt-helper using the download-file command. During this process, the secret bearer token is embedded directly in\nthe cleartext URL component passed via the command-line arguments (argv), resulting in a URL format such as https://bearer:<token>@esm.ubuntu.com/.../. On systems utilizing a default-mounted /proc file system where process-hiding mitigations (such as hidepid) are disabled, an unprivileged local attacker can\nmonitor system processes and read the sensitive bearer token directly from /proc/cmdline while the helper process is actively running. This leaked token can subsequently be used to gain unauthorized access to the victim's Ubuntu Pro or Expanded Security Maintenance (ESM) repositories.",
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"supportingMedia": [
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{
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"type": "text/html",
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"base64": false,
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"value": "An information disclosure vulnerability exists in Canonical ubuntu-pro-client<br>(formerly ubuntu-advantage-tools). The client validates Ubuntu Pro APT<br>credentials by executing /usr/lib/apt/apt-helper using the download-file<br>command. During this process, the secret bearer token is embedded directly in<br>the cleartext URL component passed via the command-line arguments (argv),<br>resulting in a URL format such as https://bearer:<token>@esm.ubuntu.com/.../.<br>On systems utilizing a default-mounted /proc file system where process-hiding<br>mitigations (such as hidepid) are disabled, an unprivileged local attacker can<br>monitor system processes and read the sensitive bearer token directly from<br>/proc/cmdline while the helper process is actively running. This leaked<br>token can subsequently be used to gain unauthorized access to the victim's<br>Ubuntu Pro or Expanded Security Maintenance (ESM) repositories.<br>"
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}
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]
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}
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],
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"references": [
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{
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"url": "https://ubuntu.com/security/CVE-2026-9494",
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"tags": [
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"vdb-entry"
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]
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}
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],
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"metrics": [
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{
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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],
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"cvssV3_1": {
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"version": "3.1",
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"attackVector": "LOCAL",
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"attackComplexity": "LOW",
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"privilegesRequired": "LOW",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "NONE",
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"availabilityImpact": "NONE",
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"baseSeverity": "MEDIUM",
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"baseScore": 5.5,
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
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}
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "Bilal Teke",
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"type": "finder"
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}
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],
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"source": {
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"discovery": "EXTERNAL"
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},
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"providerMetadata": {
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"orgId": "cc1ad9ee-3454-478d-9317-d3e869d708bc",
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"shortName": "canonical",
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"dateUpdated": "2026-07-16T12:12:27.447Z"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-07-16T13:36:06.361605Z",
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"id": "CVE-2026-9494",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-07-16T15:11:07.229Z"
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}
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}
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]
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}
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} |