DEBIAN-CVE-2022-3437

Advisory lineage Upstream: 1 Downstream: 4
Upstream
CVE-2022-3437
Published: 12 Jan 2023, 15:15
Last modified:28 Apr 2026, 20:24

Vulnerability Summary

Overall Risk (default)
medium
26/100
CVSS Score
6.5 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

12 Jan 2023, 15:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:24
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Systems

  • debian•heimdal

    < 7.7.0+dfsg-2+deb11u2 | < 7.8.git20221115.a6cf945+dfsg-1 | < 7.8.git20221115.a6cf945+dfsg-1 | < 7.8.git20221115.a6cf945+dfsg-1

  • debian•samba

    < 2:4.13.13+dfsg-1~deb11u6 | < 2:4.16.6+dfsg-1 | < 2:4.16.6+dfsg-1 | < 2:4.16.6+dfsg-1

References (1)