Bug 2172023 (CVE-2023-25567) - CVE-2023-25567 gssntlmssp: out-of-bounds read when decoding target information
Summary: CVE-2023-25567 gssntlmssp: out-of-bounds read when decoding target information
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2023-25567
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2172028 2175086 2178907 2181313
Blocks: 2169915
TreeView+ depends on / blocked
 
Reported: 2023-02-21 08:50 UTC by TEJ RATHI
Modified: 2023-05-17 03:41 UTC (History)
1 user (show)

Fixed In Version: gssntlmssp 1.2.0
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in GSS-NTLMSSP, a mechglue plugin for the GSSAPI library that implements NTLM authentication. It has an out-of-bounds read when decoding target information. The length of the `av_pair` is not checked properly for two of the elements, which can trigger an out-of-bounds read via the main `gss_accept_sec_context` entry point and could cause a denial of service if the memory is unmapped.
Clone Of:
Environment:
Last Closed: 2023-05-17 03:41:13 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2023:3097 0 None None None 2023-05-16 10:01:07 UTC

Description TEJ RATHI 2023-02-21 08:50:34 UTC 
GSS-NTLMSSP, a mechglue plugin for the GSSAPI library that implements NTLM authentication, has an out-of-bounds read when decoding target information prior to version 1.2.0. The length of the `av_pair` is not checked properly for two of the elements which can trigger an out-of-bound read. The out-of-bounds read can be triggered via the main `gss_accept_sec_context` entry point and could cause a denial-of-service if the memory is unmapped. The issue is fixed in version 1.2.0.

https://github.com/gssapi/gss-ntlmssp/security/advisories/GHSA-24pf-6prf-24ch
https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0
https://github.com/gssapi/gss-ntlmssp/commit/025fbb756d44ffee8f847db4222ed6aa4bd1fbe4
Comment 1 TEJ RATHI 2023-02-21 08:50:55 UTC 
Created gssntlmssp tracking bugs for this issue:

Affects: epel-7 [bug 2172028]
Comment 2 Sandipan Roy 2023-03-03 07:52:10 UTC 
Created gssntlmssp tracking bugs for this issue:

Affects: fedora-all [bug 2175086]
Comment 4 errata-xmlrpc 2023-05-16 10:01:05 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:3097 https://access.redhat.com/errata/RHSA-2023:3097
Comment 5 Product Security DevOps Team 2023-05-17 03:41:12 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2023-25567
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