Upstream information

CVE-2023-25563 at MITRE

Description

GSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, multiple out-of-bounds reads when decoding NTLM fields can trigger a denial of service. A 32-bit integer overflow condition can lead to incorrect checks of consistency of length of internal buffers. Although most applications will error out before accepting a singe input buffer of 4GB in length this could theoretically happen. This vulnerability can be triggered via the main `gss_accept_sec_context` entry point if the application allows tokens greater than 4GB in length. This can lead to a large, up to 65KB, out-of-bounds read which could cause a denial-of-service if it reads from unmapped memory. Version 1.2.0 contains a patch for the out-of-bounds reads.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v3 Scores
CVSS detail National Vulnerability Database
Base Score 5.9
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
CVSSv3 Version 3.1
SUSE Bugzilla entry: 1208278 [RESOLVED / FIXED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Liberty Linux 8
  • gssntlmssp >= 1.2.0-1.el8_8
 Patchnames:
RHSA-2023:3097
SUSE Package Hub 15 SP4
  • gssntlmssp >= 1.2.0-bp154.2.3.1
  • gssntlmssp-devel >= 1.2.0-bp154.2.3.1
 Patchnames:
openSUSE-2023-48
openSUSE Leap 15.4
  • gssntlmssp >= 1.2.0-bp154.2.3.1
  • gssntlmssp-devel >= 1.2.0-bp154.2.3.1
 Patchnames:
openSUSE-2023-48
openSUSE Tumbleweed
  • gssntlmssp >= 1.2.0-1.1
  • gssntlmssp-devel >= 1.2.0-1.1
 Patchnames:
openSUSE-Tumbleweed-2024-12701

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products past their end of life and not receiving proactive updates anymore.
SUSE Package Hub 15 SP4 gssntlmssp Released

SUSE Timeline for this CVE

CVE page created: Tue Feb 14 21:00:58 2023
CVE page last modified: Thu Dec 11 17:20:33 2025