169 lines
6.9 KiB
JSON
169 lines
6.9 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-2026-91840",
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"assignerOrgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5",
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"state": "PUBLISHED",
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"assignerShortName": "fedora",
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"dateReserved": "2026-09-15T08:28:01.333Z",
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"datePublished": "2026-09-25T17:56:32.736Z",
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"dateUpdated": "2026-09-28T12:44:17.583Z"
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},
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"containers": {
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"cna": {
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"title": "Networkmanager-vpnc: networkmanager-vpnc: local privilege escalation to root via newline injection in vpn username",
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"metrics": [
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{
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"other": {
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"content": {
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"value": "Important",
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"namespace": "https://access.redhat.com/security/updates/classification/"
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},
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"type": "Red Hat severity rating"
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}
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},
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "LOCAL",
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"availabilityImpact": "HIGH",
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"baseScore": 7.8,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"version": "3.1"
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},
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"format": "CVSS"
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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": "A flaw was found in NetworkManager-vpnc. This vulnerability allows a local unprivileged user to escalate privileges to root. By injecting a newline character into the VPN username field, an attacker can manipulate the vpnc configuration to execute an arbitrary program with root privileges when the malicious VPN connection is activated."
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}
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],
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"affected": [
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{
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"vendor": "GNOME",
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"product": "NetworkManager-vpnc",
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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": "*",
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"versionType": "semver"
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}
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],
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"packageName": "network-manager-vpnc",
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"collectionURL": "https://gitlab.gnome.org/GNOME/NetworkManager-vpnc",
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"defaultStatus": "unaffected"
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}
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],
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"references": [
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{
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"url": "https://access.redhat.com/security/cve/CVE-2026-91840",
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"tags": [
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"vdb-entry",
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"x_refsource_REDHAT"
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]
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},
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{
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2533642",
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"name": "RHBZ#2533642",
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"tags": [
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"issue-tracking",
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"x_refsource_REDHAT"
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]
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},
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{
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"url": "https://gitlab.gnome.org/Archive/NetworkManager-vpnc/-/work_items/19"
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}
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],
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"datePublic": "2026-09-15T09:50:37.313Z",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-93",
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"description": "Improper Neutralization of CRLF Sequences ('CRLF Injection')",
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"lang": "en",
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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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"x_redhatCweChain": "CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')",
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"workarounds": [
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{
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"lang": "en",
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"value": "If vpnc VPN connections are not required, the NetworkManager-vpnc package can be removed to eliminate the vulnerability. This action will prevent the system from establishing vpnc-based VPN connections.\n\nTo remove the package, execute the following command as root:\n`# dnf remove NetworkManager-vpnc`\n\nNote that removing this package may impact functionality if vpnc VPNs are actively used."
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}
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],
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"timeline": [
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{
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"lang": "en",
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"time": "2026-09-15T09:50:37.313Z",
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"value": "Reported to Red Hat."
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},
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{
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"lang": "en",
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"time": "2026-09-15T09:50:37.313Z",
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"value": "Made public."
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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": "Red Hat would like to thank Andreas Gabriel Berbescu for reporting this issue."
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}
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],
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"providerMetadata": {
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"orgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5",
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"shortName": "fedora",
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"dateUpdated": "2026-09-25T17:56:32.736Z"
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},
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"x_generator": {
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"engine": "cvelib 1.8.0"
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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": "2026-09-26T03:55:53.355838Z",
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"id": "CVE-2026-91840",
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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": "total"
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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": "2026-09-28T12:44:17.583Z"
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}
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}
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]
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}
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} |