MediumFix available
heimdal, samba — security advisory
A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrap_des() and unwrap_des3() routines of Heimdal. The DES and Triple-DES decryption routines in the Heimdal GSSAPI library allow a length-limited write buffer overflow on malloc() allocated memory when presented with a maliciously small packet. This flaw allows a remote user to send specially crafted malicious data to the application, possibly resulting in a denial of service (DoS) attack.
- Products
- heimdal, samba
- Affected versions
- Not specified
- Fixed versions
- 4.15.12-r0, 4.16.6-r0, 7.7.1-r0
- CVEs
- CVE-2022-3437
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 14:13 UTC · Revision 1
Source evidence
A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrap_des() and unwrap_des3() routines of Heimdal. The DES and Triple-DES decryption routines in the Heimdal GSSAPI library allow a length-limited write buffer overflow on malloc() allocated memory when presented with a maliciously small packet. This flaw allows a remote user to send specially crafted malicious data to the application, possibly resulting in a denial of service (DoS) attack.
osv:ALPINE-CVE-2022-3437
heimdal
Fixed versions: 7.7.1-r0
heimdal
Fixed versions: 7.7.1-r0
heimdal
Fixed versions: 7.7.1-r0
heimdal
Fixed versions: 7.7.1-r0
heimdal
Fixed versions: 7.7.1-r0
heimdal
Fixed versions: 7.7.1-r0
heimdal
Fixed versions: 7.7.1-r0
heimdal
Fixed versions: 7.7.1-r0
heimdal
Fixed versions: 7.7.1-r0
heimdal
Fixed versions: 7.7.1-r0
heimdal
Fixed versions: 7.7.1-r0
samba
Fixed versions: 4.15.12-r0
samba
Fixed versions: 4.15.12-r0
samba
Fixed versions: 4.16.6-r0
samba
Fixed versions: 4.16.6-r0
samba
Fixed versions: 4.16.6-r0
samba
Fixed versions: 4.16.6-r0
samba
Fixed versions: 4.16.6-r0
samba
Fixed versions: 4.16.6-r0
samba
Fixed versions: 4.16.6-r0
samba
Fixed versions: 4.16.6-r0
Complete source record
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],
"modified": "2026-10-15T07:17:54.229456355Z",
"provider": "osv",
"upstream": [
"CVE-2022-3437"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2022-3437"
]
},
"related_cves": [
{
"value": "CVE-2022-3437",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 321915,
"published_at": "2023-01-12T15:15:10.083+00:00"
}