CVE-2010-3431

Description

The privilege-dropping implementation in the (1) pam_env and (2) pam_mail modules in Linux-PAM (aka pam) 1.1.2 does not check the return value of the setfsuid system call, which might allow local users to obtain sensitive information by leveraging an unintended uid, as demonstrated by a symlink attack on the .pam_environment file in a user's home directory. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-3435.

1.9

CVSS

Severity: Low

CVSS 2.0 •

EPSS 0.08%

Vendor Advisory gentoo.org

Affected: n/a n/a

References

Link	Tags
http://openwall.com/lists/oss-security/2010/09/27/5	mailing list
http://openwall.com/lists/oss-security/2010/09/21/3	patch mailing list
http://security.gentoo.org/glsa/glsa-201206-31.xml	vendor advisory
http://openwall.com/lists/oss-security/2010/10/03/1	patch mailing list
http://www.openwall.com/lists/oss-security/2010/09/24/2	mailing list
http://openwall.com/lists/oss-security/2010/09/21/9	mailing list
http://openwall.com/lists/oss-security/2010/09/21/8	patch mailing list
http://openwall.com/lists/oss-security/2010/09/27/10	mailing list
http://git.altlinux.org/people/ldv/packages/?p=pam.git%3Ba=commit%3Bh=843807a3a90f52e7538be756616510730a24739a
http://openwall.com/lists/oss-security/2010/09/27/4	patch mailing list
http://openwall.com/lists/oss-security/2010/09/21/10	patch mailing list
http://secunia.com/advisories/49711	third party advisory
https://bugzilla.redhat.com/show_bug.cgi?id=641361	patch
http://openwall.com/lists/oss-security/2010/09/27/7	mailing list
http://openwall.com/lists/oss-security/2010/10/25/2	patch mailing list
http://www.openwall.com/lists/oss-security/2010/09/21/11	patch mailing list

Frequently Asked Questions

What is the severity of CVE-2010-3431?: CVE-2010-3431 has been scored as a low severity vulnerability.
How to fix CVE-2010-3431?: To fix CVE-2010-3431, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2010-3431 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2010-3431 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.