CVE-2022-45142

Description

The fix for CVE-2022-3437 included changing memcmp to be constant time and a workaround for a compiler bug by adding "!= 0" comparisons to the result of memcmp. When these patches were backported to the heimdal-7.7.1 and heimdal-7.8.0 branches (and possibly other branches) a logic inversion sneaked in causing the validation of message integrity codes in gssapi/arcfour to be inverted.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.06%
Vendor Advisory gentoo.org
Affected: n/a Samba
Published at:
Updated at:

References

Link Tags
https://www.openwall.com/lists/oss-security/2023/02/08/1 mailing list
https://security.gentoo.org/glsa/202310-06 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2022-45142?
CVE-2022-45142 has been scored as a high severity vulnerability.
How to fix CVE-2022-45142?
To fix CVE-2022-45142, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-45142 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-45142 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-45142?
CVE-2022-45142 affects n/a Samba.
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