CVE-2024-37370

Publication date 28 June 2024

Last updated 29 August 2024

Ubuntu priority

Cvss 3 Severity Score

In MIT Kerberos 5 (aka krb5) before 1.21.3, an attacker can modify the plaintext Extra Count field of a confidential GSS krb5 wrap token, causing the unwrapped token to appear truncated to the application.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
krb5	24.04 LTS noble	Fixed 1.20.1-6ubuntu2.1
	23.10 mantic	Ignored
	22.04 LTS jammy	Fixed 1.19.2-2ubuntu0.4
	20.04 LTS focal	Fixed 1.17-6ubuntu4.6
	18.04 LTS bionic	Fixed 1.16-2ubuntu0.4+esm2 Ubuntu Pro
	16.04 LTS xenial	Fixed 1.13.2+dfsg-5ubuntu2.2+esm5 Ubuntu Pro
	14.04 LTS trusty	Fixed 1.12+dfsg-2ubuntu5.4+esm5 Ubuntu Pro

Get expanded security coverage with Ubuntu Pro

Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.

Get Ubuntu Pro

Patch details

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

Package	Patch details
krb5	Upstream: 55fbf43

Severity score breakdown

Parameter	Value
Base score	7.5 · High
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	None
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

USN-6947-1
Kerberos vulnerabilities
8 August 2024