CVE-2011-3149: Buffer Overflow
Published Jul 22, 2012
·Updated
The expandarg function in the pamenv module (modules/pamenv/pamenv.c) in Linux-PAM (aka pam) before 1.1.5 does not properly handle when environment variable expansion can overflow, which allows local users to cause a denial of service (CPU consumption).
Affected Software
26 affected components
Linux-PAM Linux-PAM=0.99.1.0
Linux-PAM Linux-PAM=0.99.2.0
Linux-PAM Linux-PAM=0.99.2.1
Linux-PAM Linux-PAM=0.99.3.0
Linux-PAM Linux-PAM=0.99.4.0
Linux-PAM Linux-PAM=0.99.5.0
Linux-PAM Linux-PAM=0.99.6.0
Linux-PAM Linux-PAM=0.99.6.1
Linux-PAM Linux-PAM=0.99.6.2
Linux-PAM Linux-PAM=0.99.6.3
Linux-PAM Linux-PAM=0.99.7.0
Linux-PAM Linux-PAM=0.99.7.1
Linux-PAM Linux-PAM=0.99.8.0
Linux-PAM Linux-PAM=0.99.8.1
Linux-PAM Linux-PAM=0.99.9.0
Linux-PAM Linux-PAM=0.99.10.0
Linux-PAM Linux-PAM=1.0.0
Linux-PAM Linux-PAM=1.0.1
Linux-PAM Linux-PAM=1.0.2
Linux-PAM Linux-PAM=1.0.3
Linux-PAM Linux-PAM=1.0.4
Linux-PAM Linux-PAM=1.1.0
Linux-PAM Linux-PAM=1.1.1
Linux-PAM Linux-PAM=1.1.2
Linux-PAM Linux-PAM=1.1.3
Linux-PAM Linux-PAM<=1.1.4
Remediation
Event History
Jul 22, 2012
CVE Published
via MITRE·05:00 PM
Data Sourced
via MITRE·05:00 PM
Description
Frequently Asked Questions
1
What is the severity of CVE-2011-3149?
CVE-2011-3149 has a medium severity rating as it can lead to denial of service through CPU consumption.
2
How do I fix CVE-2011-3149?
To fix CVE-2011-3149, upgrade to Linux-PAM version 1.1.5 or later.
3
What systems are affected by CVE-2011-3149?
CVE-2011-3149 affects Linux-PAM versions prior to 1.1.5, including specific versions such as 0.99.1.0 to 1.1.4.
4
Can CVE-2011-3149 be exploited remotely?
No, CVE-2011-3149 is a local vulnerability, meaning it requires local user access to exploit.
5
What is the impact of CVE-2011-3149?
The impact of CVE-2011-3149 is a denial of service condition, potentially consuming excessive CPU resources.