CVE-2022-3437
MEDIUM6.5EPSS 0.73%Published: 1/12/2023Modified: 4/28/2026
Description
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.
Affected packages (4)
- Alpine/heimdalfrom 0, < 7.7.1-r0
- Alpine/sambafrom 0, < 4.15.12-r0
- Debian/heimdalfrom 0, < 7.7.0+dfsg-2+deb11u2
- Debian/sambafrom 0, < 2:4.13.13+dfsg-1~deb11u6
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |