SB2012020801 - Input validation error in OCaml
Published: February 8, 2012 Updated: August 11, 2020
Security Bulletin ID
SB2012020801
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2012-0839)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 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:U/U:Green
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
OCaml 3.12.1 and earlier 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.
Remediation
Install update from vendor's website.
References
- http://openwall.com/lists/oss-security/2012/02/07/1
- http://openwall.com/lists/oss-security/2012/02/07/2
- http://secunia.com/advisories/47853
- http://www.mail-archive.com/caml-list@inria.fr/msg01477.html
- http://www.mail-archive.com/caml-list@inria.fr/msg01478.html
- http://www.nruns.com/_downloads/advisory28122011.pdf
- http://www.ocert.org/advisories/ocert-2011-003.html