CVE-2011-3149: Buffer Overflow
First published: Sun Jul 22 2012(Updated: )
The _expand_arg function in the pam_env module (modules/pam_env/pam_env.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).
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux-PAM | =0.99.1.0 | |
| Linux-PAM | =0.99.2.0 | |
| Linux-PAM | =0.99.2.1 | |
| Linux-PAM | =0.99.3.0 | |
| Linux-PAM | =0.99.4.0 | |
| Linux-PAM | =0.99.5.0 | |
| Linux-PAM | =0.99.6.0 | |
| Linux-PAM | =0.99.6.1 | |
| Linux-PAM | =0.99.6.2 | |
| Linux-PAM | =0.99.6.3 | |
| Linux-PAM | =0.99.7.0 | |
| Linux-PAM | =0.99.7.1 | |
| Linux-PAM | =0.99.8.0 | |
| Linux-PAM | =0.99.8.1 | |
| Linux-PAM | =0.99.9.0 | |
| Linux-PAM | =0.99.10.0 | |
| Linux-PAM | =1.0.0 | |
| Linux-PAM | =1.0.1 | |
| Linux-PAM | =1.0.2 | |
| Linux-PAM | =1.0.3 | |
| Linux-PAM | =1.0.4 | |
| Linux-PAM | =1.1.0 | |
| Linux-PAM | =1.1.1 | |
| Linux-PAM | =1.1.2 | |
| Linux-PAM | =1.1.3 | |
| Linux-PAM | <=1.1.4 |
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Reference Links
- http://secunia.com/advisories/46583
- http://secunia.com/advisories/49711
- https://bugs.launchpad.net/ubuntu/+source/pam/+bug/874565
- http://security.gentoo.org/glsa/glsa-201206-31.xml
- http://git.fedorahosted.org/git/?p=linux-pam.git;a=commitdiff;h=109823cb621c900c07c4b6cdc99070d354d19444
- http://www.ubuntu.com/usn/USN-1237-1
- http://git.fedorahosted.org/git/?p=linux-pam.git%3Ba=commitdiff%3Bh=109823cb621c900c07c4b6cdc99070d354d19444
Frequently Asked Questions
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.
How do I fix CVE-2011-3149?
To fix CVE-2011-3149, upgrade to Linux-PAM version 1.1.5 or later.
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.
Can CVE-2011-3149 be exploited remotely?
No, CVE-2011-3149 is a local vulnerability, meaning it requires local user access to exploit.
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.
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/author
- agent/severity
- agent/weakness
- agent/last-modified-date
- agent/references
- agent/remedy
- agent/first-publish-date
- agent/event
- agent/description
- agent/source
- agent/tags
- collector/nvd-historical
- agent/software-canonical-lookup-request
- collector/nvd-index
- vendor/linux-pam
- canonical/linux-pam
- version/linux-pam/0.99.1.0
- version/linux-pam/0.99.2.0
- version/linux-pam/0.99.2.1
- version/linux-pam/0.99.3.0
- version/linux-pam/0.99.4.0
- version/linux-pam/0.99.5.0
- version/linux-pam/0.99.6.0
- version/linux-pam/0.99.6.1
- version/linux-pam/0.99.6.2
- version/linux-pam/0.99.6.3
- version/linux-pam/0.99.7.0
- version/linux-pam/0.99.7.1
- version/linux-pam/0.99.8.0
- version/linux-pam/0.99.8.1
- version/linux-pam/0.99.9.0
- version/linux-pam/0.99.10.0
- version/linux-pam/1.0.0
- version/linux-pam/1.0.1
- version/linux-pam/1.0.2
- version/linux-pam/1.0.3
- version/linux-pam/1.0.4
- version/linux-pam/1.1.0
- version/linux-pam/1.1.1
- version/linux-pam/1.1.2
- version/linux-pam/1.1.3
- version/linux-pam/1.1.4