#VU93233 Input validation error in libpam4j - CVE-2017-12197

Vulnerability identifier: #VU93233

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-12197

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
libpam4j
Other software / Other software solutions

Vendor: kohsuke

Description

The vulnerability allows a local user to bypass security restrictions and gain access to sensitive information.

The vulnerability exists due to libpam4j did not properly validate user accounts when authenticating. A local user can bypass security restrictions and gain access to sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libpam4j: 1.1 - 1.9

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External links
https://access.redhat.com/errata/RHSA-2017:2904
https://access.redhat.com/errata/RHSA-2017:2905
https://access.redhat.com/errata/RHSA-2017:2906
https://bugzilla.redhat.com/show_bug.cgi?id=1503103
https://lists.debian.org/debian-lts-announce/2017/11/msg00008.html
https://www.debian.org/security/2017/dsa-4025

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.