Bug 796438 (CVE-2012-1012) - CVE-2012-1012 krb5: flaw in access control handling for strings in kadmin
Summary: CVE-2012-1012 krb5: flaw in access control handling for strings in kadmin
Alias: CVE-2012-1012
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On:
Blocks: 796440
TreeView+ depends on / blocked
Reported: 2012-02-22 21:35 UTC by Vincent Danen
Modified: 2021-02-24 13:05 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2012-02-22 22:10:23 UTC

Attachments (Terms of Use)

Description Vincent Danen 2012-02-22 21:35:04 UTC
It was reported [1] that, within the kadmin protocol, the access controls for get_strings/set_string were insufficient; anyone with global list privileges could get or modify string attributed on any principal.

It was also noted that the exposure depends on how generous the kadmind acl was with list permissions and whether or not string attributes were used in deployment (and noting that nothing in the core code uses them yet).

This has been fixed upstream [2] and in Fedora [3].

[1] http://krbdev.mit.edu/rt/Ticket/Display.html?user=guest&pass=guest&id=7093
[2] http://src.mit.edu/fisheye/changelog/krb5/?cs=25704
[3] http://koji.fedoraproject.org/koji/buildinfo?buildID=300840

Comment 1 Vincent Danen 2012-02-22 22:10:23 UTC
This flaw was introduced in krb5 1.10, so only affected Fedora 17 (in current development).  It has been fixed there; earlier versions of Fedora or Red Hat Enterprise Linux are not affected.


Not vulnerable. This issue did not affect the versions of krb5 as shipped with Red Hat Enterprise Linux 4, 5, or 6.

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