125 lines
5.2 KiB
JSON
125 lines
5.2 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-2026-48983",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-05-26T23:26:07.975Z",
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"datePublished": "2026-06-18T19:07:56.198Z",
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"dateUpdated": "2026-06-22T12:41:34.711Z"
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},
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"containers": {
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"cna": {
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"title": "pam_usb: TOCTOU race condition in pad directory creation allows symlink substitution",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-367",
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"lang": "en",
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"description": "CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition",
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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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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "HIGH",
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"attackVector": "LOCAL",
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"availabilityImpact": "LOW",
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"baseScore": 5.8,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "LOW",
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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:H/PR:L/UI:N/S:U/C:H/I:L/A:L",
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"version": "3.1"
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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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"name": "https://github.com/mcdope/pam_usb/security/advisories/GHSA-4j8q-67fq-3xc3",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/mcdope/pam_usb/security/advisories/GHSA-4j8q-67fq-3xc3"
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},
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{
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"name": "https://github.com/mcdope/pam_usb/releases/tag/0.9.2",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/mcdope/pam_usb/releases/tag/0.9.2"
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}
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],
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"affected": [
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{
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"vendor": "mcdope",
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"product": "pam_usb",
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"versions": [
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{
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"version": "< 0.9.2",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-06-18T19:07:56.198Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "pam_usb provides hardware authentication for Linux using ordinary removable media. In versions prior to 0.9.2, a symlink race condition exists in per-device and per-user pad directory creation. pam_usb uses a check-then-act pattern: it calls lstat() to test for existence and then calls mkdir() separately to create the directory. A local attacker can win the race between these calls by replacing the target path with a symlink to a directory they control. If successful, one-time pad files may be written to an attacker-controlled location, potentially exposing future pad values before use or disrupting authentication. This issue has been fixed in version 0.9.2."
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}
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],
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"source": {
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"advisory": "GHSA-4j8q-67fq-3xc3",
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"discovery": "UNKNOWN"
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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": "2026-06-22T12:41:19.864255Z",
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"id": "CVE-2026-48983",
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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": "2026-06-22T12:41:34.711Z"
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}
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}
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]
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}
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} |