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Last updated: 10/25/2014 1:36:32 AM

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Vulnerability Summary for CVE-2012-0840

Original release date: 02/10/2012
Last revised: 02/13/2012
Source: US-CERT/NIST

Overview

tables/apr_hash.c in the Apache Portable Runtime (APR) library through 1.4.5 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.0 (MEDIUM) (AV:N/AC:L/Au:N/C:N/I:N/A:P) (legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: MLIST
Name: [dev] 20120105 Hash collision vectors in APR?
External Source: MLIST
Name: [apr-commits] 20120115 svn commit: r1231605 - /apr/apr/trunk/tables/apr_hash.c
External Source: CONFIRM
Name: http://svn.apache.org/viewvc?rev=1231605&view=rev
Type: Patch Information
External Source: SECUNIA
Name: 47862
Type: Advisory
External Source: MLIST
Name: [dev] 20120113 Re: Hash collision vectors in APR?
External Source: MLIST
Name: [oss-security] 20120208 CVE request: apr - Hash DoS vulnerability
External Source: MLIST
Name: [oss-security] 20120208 Re: CVE request: apr - Hash DoS vulnerability
External Source: XF
Name: apacheapr-hash-dos(73096)
External Source: MLIST
Name: [dev] 20120114 Re: Hash collision vectors in APR?

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