High
Security advisory
In support.c in pam_tacplus 1.3.8 through 1.5.1, the TACACS+ shared secret gets logged via syslog if the DEBUG loglevel and journald are used.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-13881
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:33 UTC · Revision 1
Source evidence
In support.c in pam_tacplus 1.3.8 through 1.5.1, the TACACS+ shared secret gets logged via syslog if the DEBUG loglevel and journald are used.
osv:CVE-2020-13881
Complete source record
{
"id": "9e7f5043f413314bdd319f17eafa0e26b95916cd53050699c5a686cc4eff1bad",
"url": "https://osv.dev/vulnerability/CVE-2020-13881",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-13881",
"summary": "In support.c in pam_tacplus 1.3.8 through 1.5.1, the TACACS+ shared secret gets logged via syslog if the DEBUG loglevel and journald are used.",
"evidence": "osv:CVE-2020-13881",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2020-13881",
"aliases": [
"CVE-2020-13881"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/kravietz/pam_tacplus",
"type": "GIT",
"events": [
{
"introduced": "088dedd6d9b78b7dadd9f772b3d6f597a32d1548"
},
{
"last_affected": "a21b05c1fe7ce99aa0ee01809c69b878ba90b122"
},
{
"fixed": "4a9852c31c2fd0c0e72fbb689a586aabcfb11cb0"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:pam_tacplus_project:pam_tacplus:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.3.8"
},
{
"last_affected": "1.5.1"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "4a9852c31c2fd0c0e72fbb689a586aabcfb11cb0"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"v1.5.1",
"v1.5.0-beta.1",
"v1.4.1",
"1.3.9",
"1.3.8"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-13881.json",
"vanir_signatures": [
{
"id": "CVE-2020-13881-867c5ea3",
"digest": {
"threshold": 0.9,
"line_hashes": [
"50493327747601994803184485470296647249",
"243304694626446301564069739451306751369",
"295339740349483353043127422527639009217",
"197291942669024249787144713228464574358",
"49610643164185859089051875687174081841"
]
},
"source": "https://github.com/kravietz/pam_tacplus/commit/4a9852c31c2fd0c0e72fbb689a586aabcfb11cb0",
"target": {
"file": "support.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2020-13881-be7678f1",
"digest": {
"length": 4144,
"function_hash": "67182900991507665679698129543518705166"
},
"source": "https://github.com/kravietz/pam_tacplus/commit/4a9852c31c2fd0c0e72fbb689a586aabcfb11cb0",
"target": {
"file": "support.c",
"function": "_pam_parse"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-20T13:49:48Z"
}
}
],
"modified": "2026-10-20T13:49:48.547380672Z",
"provider": "osv",
"references": [
"https://lists.debian.org/debian-lts-announce/2020/06/msg00007.html",
"https://lists.debian.org/debian-lts-announce/2021/08/msg00006.html",
"https://usn.ubuntu.com/4521-1/",
"https://www.arista.com/en/support/advisories-notices/security-advisories/11705-security-advisory-50",
"https://github.com/kravietz/pam_tacplus/issues/149",
"https://github.com/kravietz/pam_tacplus/commit/4a9852c31c2fd0c0e72fbb689a586aabcfb11cb0"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:arista:cloudvision_portal:*:*:*:*:*:*:*:*"
],
"vendor_product": "arista:cloudvision_portal",
"extracted_events": [
{
"range": [
{
"fixed": "2020.1.2"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*"
],
"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
{
"range": [
{
"introduced": "16.04"
},
{
"last_affected": "16.04"
},
{
"introduced": "18.04"
},
{
"last_affected": "18.04"
},
{
"introduced": "20.04"
},
{
"last_affected": "20.04"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "8.0"
},
{
"last_affected": "8.0"
},
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2020-13881",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 388257,
"published_at": "2020-06-06T19:15:09.61+00:00"
}