6.5
CVSSv3

CVE-2022-3437

Published: 12/01/2023 Updated: 22/04/2024
CVSS v3 Base Score: 6.5 | Impact Score: 3.6 | Exploitability Score: 2.8
VMScore: 0

Vulnerability Summary

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.

Vulnerability Trend

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samba samba

fedoraproject fedora 36

fedoraproject fedora 37

Vendor Advisories

Debian Bug report logs - #1024187 heimdal: CVE-2022-44640 CVE-2022-42898 CVE-2022-3437 CVE-2021-44758 Package: src:heimdal; Maintainer for src:heimdal is Brian May <bam@debianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Tue, 15 Nov 2022 21:30:02 UTC Severity: grave Tags: security, upstream Foun ...
Several security issues were fixed in Samba ...
Several security issues were fixed in Heimdal ...
Helmut Grohne discovered a flaw in Heimdal, an implementation of Kerberos 5 that aims to be compatible with MIT Kerberos The backports of fixes for CVE-2022-3437 accidentally inverted important memory comparisons in the arcfour-hmac-md5 and rc4-hmac integrity check handlers for gssapi, resulting in incorrect validation of message integrity codes ...
Several vulnerabilities were discovered in Heimdal, an implementation of Kerberos 5 that aims to be compatible with MIT Kerberos CVE-2021-3671 Joseph Sutton discovered that the Heimdal KDC does not validate that the server name in the TGS-REQ is present before dereferencing, which may result in denial of service CVE-2021-44758 It ...
Description<!----> This CVE is under investigation by Red Hat Product Security ...
Severity Unknown Remote Unknown Type Unknown Description AVG-2828 samba 4174-4 4175-1 Unknown Fixed ...