CVE-2017-16943 (GCVE-0-2017-16943)
Vulnerability from cvelistv5 – Published: 2017-11-25 17:00 – Updated: 2024-08-05 20:43
VLAI
EPSS
VEX
Summary
The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via vectors involving BDAT commands.
Severity
9.8 (Critical)
CWE
- n/a
Assigner
References
11 references
| URL | Tags |
|---|---|
| http://www.securitytracker.com/id/1039872 | vdb-entryx_refsource_SECTRACK |
| https://lists.exim.org/lurker/message/20171125.03… | x_refsource_MISC |
| https://git.exim.org/exim.git/commit/4090d62a4b25… | x_refsource_MISC |
| http://openwall.com/lists/oss-security/2017/11/25/3 | x_refsource_MISC |
| https://github.com/LetUsFsck/PoC-Exploit-Mirror/t… | x_refsource_MISC |
| http://openwall.com/lists/oss-security/2017/11/25/1 | x_refsource_MISC |
| https://git.exim.org/exim.git/commitdiff/4e6ae623… | x_refsource_MISC |
| http://openwall.com/lists/oss-security/2017/11/25/2 | x_refsource_MISC |
| https://www.debian.org/security/2017/dsa-4053 | vendor-advisoryx_refsource_DEBIAN |
| https://bugs.exim.org/show_bug.cgi?id=2199 | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2021/05/04/7 | mailing-listx_refsource_MLIST |
Date Public
2017-11-25 00:00
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"url": "http://openwall.com/lists/oss-security/2017/11/25/3"
},
{
"source": "cve@mitre.org",
"url": "http://www.openwall.com/lists/oss-security/2021/05/04/7"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"url": "http://www.securitytracker.com/id/1039872"
},
{
"source": "cve@mitre.org",
"tags": [
"Exploit",
"Issue Tracking"
],
"url": "https://bugs.exim.org/show_bug.cgi?id=2199"
},
{
"source": "cve@mitre.org",
"tags": [
"Patch"
],
"url": "https://git.exim.org/exim.git/commit/4090d62a4b25782129cc1643596dc2f6e8f63bde"
},
{
"source": "cve@mitre.org",
"tags": [
"Patch"
],
"url": "https://git.exim.org/exim.git/commitdiff/4e6ae6235c68de243b1c2419027472d7659aa2b4"
},
{
"source": "cve@mitre.org",
"tags": [
"Exploit"
],
"url": "https://github.com/LetUsFsck/PoC-Exploit-Mirror/tree/master/CVE-2017-16944"
},
{
"source": "cve@mitre.org",
"tags": [
"Mailing List"
],
"url": "https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://www.debian.org/security/2017/dsa-4053"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List"
],
"url": "http://openwall.com/lists/oss-security/2017/11/25/1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List"
],
"url": "http://openwall.com/lists/oss-security/2017/11/25/2"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List"
],
"url": "http://openwall.com/lists/oss-security/2017/11/25/3"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.openwall.com/lists/oss-security/2021/05/04/7"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"url": "http://www.securitytracker.com/id/1039872"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Issue Tracking"
],
"url": "https://bugs.exim.org/show_bug.cgi?id=2199"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.exim.org/exim.git/commit/4090d62a4b25782129cc1643596dc2f6e8f63bde"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "https://git.exim.org/exim.git/commitdiff/4e6ae6235c68de243b1c2419027472d7659aa2b4"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit"
],
"url": "https://github.com/LetUsFsck/PoC-Exploit-Mirror/tree/master/CVE-2017-16944"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List"
],
"url": "https://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://www.debian.org/security/2017/dsa-4053"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-416"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Critical",
"current_release_date": "2026-05-13T01:04:16+00:00",
"cve": "CVE-2017-16943",
"id": "CVE-2017-16943",
"initial_release_date": "2017-11-23T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "exim: use-after-free in receive_msg function via vectors involving BDAT commands",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2017/cve-2017-16943.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-05-13T15:55:25Z",
"cve": "CVE-2017-16943",
"id": "CVE-2017-16943",
"initial_release_date": "2023-02-15T04:37:07Z",
"product_status:recommended": "18",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2017-16943",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2017-16943.json",
"version": "8"
}
}
}
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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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