CVE-2011-1764 (GCVE-0-2011-1764)
Vulnerability from cvelistv5 – Published: 2011-10-05 01:00 – Updated: 2024-08-06 22:37
VLAI
EPSS
VEX
Summary
Format string vulnerability in the dkim_exim_verify_finish function in src/dkim.c in Exim before 4.76 might allow remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via format string specifiers in data used in DKIM logging, as demonstrated by an identity field containing a % (percent) character.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
7 references
| URL | Tags |
|---|---|
| http://secunia.com/advisories/51155 | third-party-advisoryx_refsource_SECUNIA |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| http://www.debian.org/security/2011/dsa-2232 | vendor-advisoryx_refsource_DEBIAN |
| http://git.exim.org/exim.git/commit/337e3505b0e6c… | x_refsource_CONFIRM |
| https://bugzilla.redhat.com/show_bug.cgi?id=702474 | x_refsource_CONFIRM |
| http://bugs.exim.org/show_bug.cgi?id=1106 | x_refsource_CONFIRM |
| http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=624670 | x_refsource_CONFIRM |
Date Public
2011-05-05 00:00
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"criteria": "cpe:2.3:a:exim:exim:4.66:*:*:*:*:*:*:*",
"matchCriteriaId": "CCD8FE2F-8D53-407A-BB83-EB7725456D71",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:exim:exim:4.67:*:*:*:*:*:*:*",
"matchCriteriaId": "162F5CB4-1931-4236-8519-DD63A98BCEE0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:exim:exim:4.68:*:*:*:*:*:*:*",
"matchCriteriaId": "9EF06704-E078-42FA-89DA-7BCA169D0E5B",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:exim:exim:4.69:*:*:*:*:*:*:*",
"matchCriteriaId": "B8F2CB6E-1ED1-4E56-9532-30D2BA6A53DD",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:exim:exim:4.70:*:*:*:*:*:*:*",
"matchCriteriaId": "452E9C94-B7FF-40A9-A7F9-FC38824F6135",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:exim:exim:4.71:*:*:*:*:*:*:*",
"matchCriteriaId": "A8EB3709-D51F-46D1-99B8-CFB4C2275077",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:exim:exim:4.72:*:*:*:*:*:*:*",
"matchCriteriaId": "CBDB2156-072B-4392-9DC8-266FF1B8C7A4",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:exim:exim:4.73:*:*:*:*:*:*:*",
"matchCriteriaId": "02F8A053-4578-4C45-A193-C188E45ED010",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:exim:exim:4.74:*:*:*:*:*:*:*",
"matchCriteriaId": "A5DC11D6-F67F-40A8-B8BF-2E76DD2F9091",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Format string vulnerability in the dkim_exim_verify_finish function in src/dkim.c in Exim before 4.76 might allow remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via format string specifiers in data used in DKIM logging, as demonstrated by an identity field containing a % (percent) character."
},
{
"lang": "es",
"value": "Vulnerabilidad de formato de cadena en la funci\u00f3n dkim_exim_verify_finish de src/dkim.c de Exim en versiones anteriores a 4.76. Puede permitir a atacantes remotos ejecutar c\u00f3digo arbitrario o provocar una denegaci\u00f3n de servicio (ca\u00edda del demonio) a trav\u00e9s de especificadores de formato de cadena en datos usados en el logging DKIM, tal como se ha demostrado en un campo identity que contenga un car\u00e1cter % (tanto por ciento)."
}
],
"id": "CVE-2011-1764",
"lastModified": "2026-04-29T01:13:23.040",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 7.5,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2011-10-05T02:56:24.707",
"references": [
{
"source": "secalert@redhat.com",
"tags": [
"Patch"
],
"url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=624670"
},
{
"source": "secalert@redhat.com",
"tags": [
"Patch"
],
"url": "http://bugs.exim.org/show_bug.cgi?id=1106"
},
{
"source": "secalert@redhat.com",
"tags": [
"Patch"
],
"url": "http://git.exim.org/exim.git/commit/337e3505b0e6cd4309db6bf6062b33fa56e06cf8"
},
{
"source": "secalert@redhat.com",
"url": "http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00005.html"
},
{
"source": "secalert@redhat.com",
"url": "http://secunia.com/advisories/51155"
},
{
"source": "secalert@redhat.com",
"url": "http://www.debian.org/security/2011/dsa-2232"
},
{
"source": "secalert@redhat.com",
"tags": [
"Patch"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=702474"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=624670"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "http://bugs.exim.org/show_bug.cgi?id=1106"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "http://git.exim.org/exim.git/commit/337e3505b0e6cd4309db6bf6062b33fa56e06cf8"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00005.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/51155"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.debian.org/security/2011/dsa-2232"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=702474"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-134"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2025-11-21T12:55:38+00:00",
"cve": "CVE-2011-1764",
"id": "CVE-2011-1764",
"initial_release_date": "2011-04-29T00:00:00+00:00",
"product_status:known_not_affected": "2",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "exim: improper format string handling in DKIM signatures",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2011/cve-2011-1764.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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