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CVE-2024-2698

June 12, 2024, 8:15 a.m.

CVSS Score

7.1 / 10

Product(s) Impacted

FreeIPA

  • 4.11.0

Description

A vulnerability was found in FreeIPA in how the initial implementation of MS-SFU by MIT Kerberos was missing a condition for granting the "forwardable" flag on S4U2Self tickets. Fixing this mistake required adding a special case for the check_allowed_to_delegate() function: If the target service argument is NULL, then it means the KDC is probing for general constrained delegation rules and not checking a specific S4U2Proxy request. In FreeIPA 4.11.0, the behavior of ipadb_match_acl() was modified to match the changes from upstream MIT Kerberos 1.20. However, a mistake resulting in this mechanism applies in cases where the target service argument is set AND where it is unset. This results in S4U2Proxy requests being accepted regardless of whether or not there is a matching service delegation rule.

Weaknesses

Date

Published: June 12, 2024, 8:15 a.m.

Last Modified: June 12, 2024, 8:15 a.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

secalert@redhat.com

CVSS Data

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

LOW

Availability Impact

NONE

Base Score
7.1
Exploitability Score
Impact Score
Base Severity
HIGH
CVSS Vector String

The CVSS vector string provides an in-depth view of the vulnerability metrics.

View Vector String

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

References

https://access.redhat.com/ secalert@redhat.com

https://access.redhat.com/ secalert@redhat.com

https://access.redhat.com/ secalert@redhat.com

https://access.redhat.com/ secalert@redhat.com

https://access.redhat.com/ secalert@redhat.com

https://bugzilla.redhat.com/ secalert@redhat.com

https://www.freeipa.org/ secalert@redhat.com