Input validation error - CVE-2012-0840
Published: February 10, 2012 / Updated: August 4, 2020
Vulnerability identifier: #VU33122
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2012-0840
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor:
Affected software:
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
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.
How to mitigate CVE-2012-0840
Install update from vendor's website.
Sources
- http://mail-archives.apache.org/mod_mbox/apr-commits/201201.mbox/%3C20120115003715.071D423888FD@eris.apache.org%3E
- http://openwall.com/lists/oss-security/2012/02/08/3
- http://openwall.com/lists/oss-security/2012/02/09/1
- http://secunia.com/advisories/47862
- http://svn.apache.org/viewvc?rev=1231605&view=rev
- http://www.mail-archive.com/dev%40apr.apache.org/msg24439.html
- http://www.mail-archive.com/dev%40apr.apache.org/msg24472.html
- http://www.mail-archive.com/dev%40apr.apache.org/msg24473.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2012:019
- https://exchange.xforce.ibmcloud.com/vulnerabilities/73096