Input validation error in linux-pam - CVE-2010-4706
Published: January 24, 2011 / Updated: August 11, 2020
Vulnerability identifier: #VU45411
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2010-4706
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 perform a denial of service (DoS) attack.
The pam_sm_close_session function in pam_xauth.c in the pam_xauth module in Linux-PAM (aka pam) 1.1.2 and earlier does not properly handle a failure to determine a certain target uid, which might allow local users to delete unintended files by executing a program that relies on the pam_xauth PAM check.
How to mitigate CVE-2010-4706
Install update from vendor's website.
Sources
- http://git.altlinux.org/people/ldv/packages/?p=pam.git;a=commit;h=Linux-PAM-1_1_2-3-g05dafc06cd3dfeb7c4b24942e4e1ae33ff75a123
- http://openwall.com/lists/oss-security/2010/10/03/1
- http://secunia.com/advisories/49711
- http://security.gentoo.org/glsa/glsa-201206-31.xml
- http://www.securityfocus.com/bid/46045
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65035