CVE-2010-3431

low
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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.

References

http://git.altlinux.org/people/ldv/packages/?p=pam.git;a=commit;h=843807a3a90f52e7538be756616510730a24739a

http://openwall.com/lists/oss-security/2010/09/21/10

http://openwall.com/lists/oss-security/2010/09/21/3

http://openwall.com/lists/oss-security/2010/09/21/8

http://openwall.com/lists/oss-security/2010/09/21/9

http://openwall.com/lists/oss-security/2010/09/27/10

http://openwall.com/lists/oss-security/2010/09/27/4

http://openwall.com/lists/oss-security/2010/09/27/5

http://openwall.com/lists/oss-security/2010/09/27/7

http://openwall.com/lists/oss-security/2010/10/03/1

http://openwall.com/lists/oss-security/2010/10/25/2

http://secunia.com/advisories/49711

http://security.gentoo.org/glsa/glsa-201206-31.xml

http://www.openwall.com/lists/oss-security/2010/09/21/11

http://www.openwall.com/lists/oss-security/2010/09/24/2

https://bugzilla.redhat.com/show_bug.cgi?id=641361

Details

Source: MITRE

Published: 2011-01-24

Updated: 2019-01-03

Risk Information

CVSS v2

Base Score: 1.9

Vector: AV:L/AC:M/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 3.4

Severity: LOW

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:linux-pam:linux-pam:1.1.2:*:*:*:*:*:*:*

Tenable Plugins

View all (3 total)

IDNameProductFamilySeverity
59704GLSA-201206-31 : Linux-PAM: Multiple vulnerabilitiesNessusGentoo Local Security Checks
high
55103Ubuntu 8.04 LTS / 10.04 LTS / 10.10 / 11.04 : pam regression (USN-1140-2)NessusUbuntu Local Security Checks
medium
55102Ubuntu 8.04 LTS / 10.04 LTS / 10.10 / 11.04 : pam vulnerabilities (USN-1140-1)NessusUbuntu Local Security Checks
medium