CVE-2012-0840 (GCVE-0-2012-0840)
Vulnerability from cvelistv5 – Published: 2012-02-10 19:00 – Updated: 2024-08-06 18:38
VLAI
EPSS
VEX
Summary
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.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
10 references
| URL | Tags |
|---|---|
| http://mail-archives.apache.org/mod_mbox/apr-comm… | mailing-listx_refsource_MLIST |
| https://exchange.xforce.ibmcloud.com/vulnerabilit… | vdb-entryx_refsource_XF |
| http://openwall.com/lists/oss-security/2012/02/08/3 | mailing-listx_refsource_MLIST |
| http://www.mandriva.com/security/advisories?name=… | vendor-advisoryx_refsource_MANDRIVA |
| http://secunia.com/advisories/47862 | third-party-advisoryx_refsource_SECUNIA |
| http://svn.apache.org/viewvc?rev=1231605&view=rev | x_refsource_CONFIRM |
| http://www.mail-archive.com/dev%40apr.apache.org/… | mailing-listx_refsource_MLIST |
| http://www.mail-archive.com/dev%40apr.apache.org/… | mailing-listx_refsource_MLIST |
| http://openwall.com/lists/oss-security/2012/02/09/1 | mailing-listx_refsource_MLIST |
| http://www.mail-archive.com/dev%40apr.apache.org/… | mailing-listx_refsource_MLIST |
Date Public
2012-01-05 00:00
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"url": "http://svn.apache.org/viewvc?rev=1231605\u0026view=rev"
},
{
"source": "secalert@redhat.com",
"url": "http://www.mail-archive.com/dev%40apr.apache.org/msg24439.html"
},
{
"source": "secalert@redhat.com",
"url": "http://www.mail-archive.com/dev%40apr.apache.org/msg24472.html"
},
{
"source": "secalert@redhat.com",
"url": "http://www.mail-archive.com/dev%40apr.apache.org/msg24473.html"
},
{
"source": "secalert@redhat.com",
"url": "http://www.mandriva.com/security/advisories?name=MDVSA-2012:019"
},
{
"source": "secalert@redhat.com",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/73096"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://mail-archives.apache.org/mod_mbox/apr-commits/201201.mbox/%3C20120115003715.071D423888FD%40eris.apache.org%3E"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://openwall.com/lists/oss-security/2012/02/08/3"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://openwall.com/lists/oss-security/2012/02/09/1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://secunia.com/advisories/47862"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "http://svn.apache.org/viewvc?rev=1231605\u0026view=rev"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.mail-archive.com/dev%40apr.apache.org/msg24439.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.mail-archive.com/dev%40apr.apache.org/msg24472.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.mail-archive.com/dev%40apr.apache.org/msg24473.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.mandriva.com/security/advisories?name=MDVSA-2012:019"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/73096"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-20"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-05-14T15:17:23+00:00",
"cve": "CVE-2012-0840",
"id": "CVE-2012-0840",
"initial_release_date": "2012-01-05T00:00:00+00:00",
"product_status:known_affected": "6",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "apr: hash table collisions CPU usage DoS",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2012/cve-2012-0840.json",
"version": "3"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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