VulnerabilityModified
CVE-2016-4422
The pam_sm_authenticate function in pam_sshauth.c in libpam-sshauth might allow context-dependent attackers to bypass authentication or gain privileges via a system user account.
CRITICAL 9.8EPSS 1.80%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.80%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The pam_sm_authenticate function in pam_sshauth.c in libpam-sshauth might allow context-dependent attackers to bypass authentication or gain privileges via a system user account.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.80% probability · 77th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- libpam-sshauth project/libpam-sshauth · debian/debian linux
- Source
- security@debian.org
References
- http://www.debian.org/security/2016/dsa-3567Third Party Advisory
- https://bazaar.launchpad.net/~ltsp-upstream/ltsp/libpam-sshauth/revision/114#src/pam_sshauth.cBroken Link
- http://www.debian.org/security/2016/dsa-3567Third Party Advisory
- https://bazaar.launchpad.net/~ltsp-upstream/ltsp/libpam-sshauth/revision/114#src/pam_sshauth.cBroken Link
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.