CVE-2012-0840
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
02 Description
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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 42.13% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 98.6% of scored records. A rank, not a probability.
- NVD base score
- The NVD has published no score for this record
- NVD CVSS vector
- No NVD score to derive
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-16.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2012-02-10 19:00Z14 YR AGO
- Last updated
- 2024-08-06 18:38Z2 YR AGO
- Reserved
- 2012-01-19
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-20Improper Input ValidationClass
- Data version
- 5.1
- Document digest
- 46c29dd5c09d19f8ce7543b0c67ee3e1b9bef163b70550b6c397ff64de696986
05 Affected products
06 References
- mail-archives.apache.org[apr-commits] 20120115 svn commit: r1231605 - /apr/apr/trunk/tables/apr_hash.chttp://mail-archives.apache.org/mod_mbox/apr-commits/201201.mbox/%3C20120115003715.071D423888FD%40eris.apache.org%3E
- exchange.xforce.ibmcloud.comapacheapr-hash-dos(73096)https://exchange.xforce.ibmcloud.com/vulnerabilities/73096
- openwall.com[oss-security] 20120208 CVE request: apr - Hash DoS vulnerabilityhttp://openwall.com/lists/oss-security/2012/02/08/3
- www.mandriva.comMDVSA-2012:019http://www.mandriva.com/security/advisories?name=MDVSA-2012:019
- secunia.com47862http://secunia.com/advisories/47862
- svn.apache.orghttp://svn.apache.org/viewvc?rev=1231605&view=rev
- www.mail-archive.com[dev] 20120105 Hash collision vectors in APR?http://www.mail-archive.com/dev%40apr.apache.org/msg24439.html
- www.mail-archive.com[dev] 20120113 Re: Hash collision vectors in APR?http://www.mail-archive.com/dev%40apr.apache.org/msg24472.html
- openwall.com[oss-security] 20120208 Re: CVE request: apr - Hash DoS vulnerabilityhttp://openwall.com/lists/oss-security/2012/02/09/1
- www.mail-archive.com[dev] 20120114 Re: Hash collision vectors in APR?http://www.mail-archive.com/dev%40apr.apache.org/msg24473.html
07 Fixed in
Debian 12
- apr Fixed in 1.4.6-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- apr Fixed in 1.4.6-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- apr Fixed in 1.4.6-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.