CVE-2012-1180: Use After Free
A flaw was reported [1] in nginx versions prior to 1.0.14 and 1.1.17 where contents of previously freed memory could be sent to a client if an upstream server returned a specially crafted HTTP response. This could potentially leak sensitive information to the HTTP client.
This has been corrected upstream [2],[3] and a patch [4] is available for earlier versions of nginx.
[1] http://seclists.org/bugtraq/2012/Mar/65 [2] http://trac.nginx.org/nginx/changeset/4530/nginx [3] http://trac.nginx.org/nginx/changeset/4531/nginx [4] http://nginx.org/download/patch.2012.memory.txt
Other sources
Use-after-free vulnerability in nginx before 1.0.14 and 1.1.x before 1.1.17 allows remote HTTP servers to obtain sensitive information from process memory via a crafted backend response, in conjunction with a client request.
— MITRE
Affected Software
Remediation
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Event History
Frequently Asked Questions
What is the severity of CVE-2012-1180?
CVE-2012-1180 has a moderate severity rating due to potential information leakage.
How do I fix CVE-2012-1180?
To fix CVE-2012-1180, upgrade to nginx version 1.0.14 or 1.1.17 or later.
What versions are affected by CVE-2012-1180?
CVE-2012-1180 affects nginx versions prior to 1.0.14 and 1.1.17, along with certain Fedora and Debian releases.
What is the impact of CVE-2012-1180?
The impact of CVE-2012-1180 is the potential leakage of sensitive information from previously freed memory.
Is CVE-2012-1180 exploited in the wild?
As of the last reports, there is no evidence of CVE-2012-1180 being actively exploited in the wild.