CVE-2022-3437
6.5
MEDIUM
CVSS 3.1
EPSS 3.7%
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.
How to fix CVE-2022-3437
To remediate CVE-2022-3437, upgrade the affected package to a fixed version below.
- —upgrade to 7.7.1-r0 or later
- —upgrade to 4.15.12-r0 or later
Is CVE-2022-3437 being exploited?
Low — EPSS is 3.7%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 7.7.1-r0
- >= 4.0.0, < 4.15.12-r0
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 |