Bug 2172021 (CVE-2023-25565) - CVE-2023-25565 gssntlmssp: incorrect free when decoding target information
Summary: CVE-2023-25565 gssntlmssp: incorrect free when decoding target information
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2023-25565
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: 2172026 2175084 2178907 2181313
Blocks: 2169915
TreeView+ depends on / blocked
 
Reported: 2023-02-21 08:50 UTC by TEJ RATHI
Modified: 2023-05-17 03:12 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. An incorrect free when decoding target information can trigger a denial of service. The error condition incorrectly assumes the `cb` and `sh` buffers contain a copy of the data that needs to be freed. However, that is not the case. This vulnerability can be triggered via the main `gss_accept_sec_context` entry point. This issue will likely trigger an assertion failure in `free,` causing a denial of service.
Clone Of:
Environment:
Last Closed: 2023-05-17 03:12:23 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 10:01:02 UTC

Description TEJ RATHI 2023-02-21 08:50:29 UTC 
GSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, an incorrect free when decoding target information can trigger a denial of service. The error condition incorrectly assumes the `cb` and `sh` buffers contain a copy of the data that needs to be freed. However, that is not the case. This vulnerability can be triggered via the main `gss_accept_sec_context` entry point. This will likely trigger an assertion failure in `free`, causing a denial-of-service. This issue is fixed in version 1.2.0.

https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0
https://github.com/gssapi/gss-ntlmssp/commit/c16100f60907a2de92bcb676f303b81facee0f64
https://github.com/gssapi/gss-ntlmssp/security/advisories/GHSA-7q7f-wqcg-mvfg
Comment 1 TEJ RATHI 2023-02-21 08:50:52 UTC 
Created gssntlmssp tracking bugs for this issue:

Affects: epel-7 [bug 2172026]
Comment 2 Sandipan Roy 2023-03-03 07:51:30 UTC 
Created gssntlmssp tracking bugs for this issue:

Affects: fedora-all [bug 2175084]
Comment 4 errata-xmlrpc 2023-05-16 10:01:01 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 03:12:22 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-2023-25565
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