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	24.10 oracular	Not affected
	24.04 LTS noble	Fixed 1.20.1-6ubuntu2.1
	23.10 mantic	Ignored end of life, was needs-triage
	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

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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