#VU45415 Input validation error in linux-pam - CVE-2010-3316
Vulnerability identifier: #VU45415
Vulnerability risk: Medium
CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
linux-pam
Other software /
Other software solutions
Vendor: git.kernel.org
Description
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The run_coprocess function in pam_xauth.c in the pam_xauth module in Linux-PAM (aka pam) before 1.1.2 does not check the return values of the setuid, setgid, and setgroups system calls, which might allow local users to read arbitrary files by executing a program that relies on the pam_xauth PAM check.
Mitigation
Install update from vendor's website.
Vulnerable software versions
linux-pam: 0.99.1.0 - 1.1.0
External links
https://git.altlinux.org/people/ldv/packages/?p=pam.git;a=commit;h=06f882f30092a39a1db867c9744b2ca8d60e4ad6
https://lists.vmware.com/pipermail/security-announce/2011/000126.html
https://openwall.com/lists/oss-security/2010/08/16/2
https://openwall.com/lists/oss-security/2010/09/21/3
https://openwall.com/lists/oss-security/2010/09/21/8
https://openwall.com/lists/oss-security/2010/09/27/10
https://openwall.com/lists/oss-security/2010/09/27/4
https://openwall.com/lists/oss-security/2010/09/27/5
https://openwall.com/lists/oss-security/2010/09/27/7
https://openwall.com/lists/oss-security/2010/10/25/2
https://secunia.com/advisories/49711
https://security.gentoo.org/glsa/glsa-201206-31.xml
https://www.mandriva.com/security/advisories?name=MDVSA-2010:220
https://www.openwall.com/lists/oss-security/2010/09/24/2
https://www.redhat.com/support/errata/RHSA-2010-0819.html
https://www.redhat.com/support/errata/RHSA-2010-0891.html
https://www.securityfocus.com/archive/1/516909/100/0/threaded
https://www.vmware.com/security/advisories/VMSA-2011-0004.html
https://www.vupen.com/english/advisories/2011/0606
https://bugzilla.redhat.com/show_bug.cgi?id=637898
https://sourceforge.net/tracker/?func=detail&aid=3028213&group_id=6663&atid=106663
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
