CVE-2022-3437

Publication date 27 October 2022

Last updated 24 July 2024


Ubuntu priority

Cvss 3 Severity Score

6.5 · Medium

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
heimdal 24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar
Not affected
22.10 kinetic Ignored end of life, was needed
22.04 LTS jammy
Vulnerable
20.04 LTS focal
Fixed 7.7.0+dfsg-1ubuntu1.3
18.04 LTS bionic
Fixed 7.5.0+dfsg-1ubuntu0.3
16.04 LTS xenial
14.04 LTS trusty
samba 24.10 oracular
Fixed 2:4.17.3+dfsg-3ubuntu1
24.04 LTS noble
Fixed 2:4.17.3+dfsg-3ubuntu1
23.10 mantic
Fixed 2:4.17.3+dfsg-3ubuntu1
23.04 lunar
Fixed 2:4.17.3+dfsg-3ubuntu1
22.10 kinetic
Fixed 2:4.16.8+dfsg-0ubuntu1
22.04 LTS jammy
Fixed 2:4.15.13+dfsg-0ubuntu1
20.04 LTS focal
Fixed 2:4.15.13+dfsg-0ubuntu0.20.04.1
18.04 LTS bionic
Vulnerable
16.04 LTS xenial
Needs evaluation
14.04 LTS trusty
Needs evaluation

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Notes


mdeslaur

The focal samba update was temporarily reverted by USN 5822-2 because it introduced regressions. It was later updated again with USN 5936-1.


rodrigo-zaiden

heimdal patch f6edaafc introduced a new issue, assigned as CVE-2022-45142.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
heimdal
samba

Severity score breakdown

Parameter Value
Base score 6.5 · Medium
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

Other references