Input validation error in linux-pam - CVE-2010-3853
Published: January 24, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU45414
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2010-3853
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: git.kernel.org
Affected software:
linux-pam
linux-pam
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
pam_namespace.c in the pam_namespace module in Linux-PAM (aka pam) before 1.1.3 uses the environment of the invoking application or service during execution of the namespace.init script, which might allow local users to gain privileges by running a setuid program that relies on the pam_namespace PAM check, as demonstrated by the sudo program.
How to mitigate CVE-2010-3853
Install update from vendor's website.
Sources
- http://lists.vmware.com/pipermail/security-announce/2011/000126.html
- http://pam.cvs.sourceforge.net/viewvc/pam/Linux-PAM/modules/pam_namespace/pam_namespace.c?view=log#rev1.13
- http://secunia.com/advisories/49711
- http://security.gentoo.org/glsa/glsa-201206-31.xml
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:220
- http://www.redhat.com/support/errata/RHSA-2010-0819.html
- http://www.redhat.com/support/errata/RHSA-2010-0891.html
- http://www.securityfocus.com/archive/1/516909/100/0/threaded
- http://www.vmware.com/security/advisories/VMSA-2011-0004.html
- http://www.vupen.com/english/advisories/2011/0606
- https://bugzilla.redhat.com/show_bug.cgi?id=643043