Vulnerability Name:

CVE-2016-4422 (CCN-113001)

Assigned:2016-05-02
Published:2016-05-02
Updated:2021-04-05
Summary: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 v3 Severity:9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
8.4 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
7.3 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:10.0 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
7.2 High (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-287
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2016-4422

Source: CCN
Type: oss-sec Mailing List, Sun, 1 May 2016 10:02:15 -0400 (EDT)
Re: CVE Request: libpam-sshauth: local root privilege escalation

Source: DEBIAN
Type: Third Party Advisory
DSA-3567

Source: CONFIRM
Type: Broken Link
https://bazaar.launchpad.net/~ltsp-upstream/ltsp/libpam-sshauth/revision/114#src/pam_sshauth.c

Source: XF
Type: UNKNOWN
libpamsshauth-cve20164422-priv-esc(113001)

Source: CCN
Type: Debian Web site
Package: libpam-sshauth

Vulnerable Configuration:Configuration 1:
  • cpe:/a:libpam-sshauth_project:libpam-sshauth:-:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.cisecurity:def:528
    P
    		DSA-3567-1 -- libpam-sshauth -- security update
    2016-07-01
    oval:com.ubuntu.precise:def:20164422000
    V
    		CVE-2016-4422 on Ubuntu 12.04 LTS (precise) - high.
    2016-05-06
    oval:com.ubuntu.xenial:def:201644220000000
    V
    		CVE-2016-4422 on Ubuntu 16.04 LTS (xenial) - high.
    2016-05-06
    oval:com.ubuntu.trusty:def:20164422000
    V
    		CVE-2016-4422 on Ubuntu 14.04 LTS (trusty) - high.
    2016-05-06
    oval:com.ubuntu.xenial:def:20164422000
    V
    		CVE-2016-4422 on Ubuntu 16.04 LTS (xenial) - high.
    2016-05-06
    BACK
    libpam-sshauth_project libpam-sshauth -
    debian debian linux 8.0