GSS-NTLMSSP up to 1.1.x NTLM Authentication av_pair out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in GSS-NTLMSSP up to 1.1.x and classified as problematic. Impacted is an unknown function of the component NTLM Authentication. Executing a manipulation of the argument av_pair can lead to out-of-bounds. This vulnerability is registered as CVE-2023-25567. It is possible to launch the attack remotely. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in GSS-NTLMSSP up to 1.1.x. This vulnerability affects an unknown code of the component NTLM Authentication. The manipulation of the argument av_pair with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect availability. CVE summarizes:

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.

The weakness was published 02/14/2023 as GHSA-24pf-6prf-24ch. The advisory is available at github.com. This vulnerability was named CVE-2023-25567 since 02/07/2023. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 240491 (Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS : GSS NTLMSSP vulnerabilities (USN-7588-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.2.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 025fbb756d44ffee8f847db4222ed6aa4bd1fbe4 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (240491) and CERT Bund (WID-SEC-2023-1238). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Oracle Linux
  • Red Hat Enterprise Linux
  • RESF Rocky Linux

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
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Nessus ID: 240491
Nessus Name: Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS : GSS NTLMSSP vulnerabilities (USN-7588-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: GSS-NTLMSSP 1.2.0
Patch: 025fbb756d44ffee8f847db4222ed6aa4bd1fbe4

Timelineinfo

02/07/2023 🔍
02/14/2023 +7 days 🔍
02/14/2023 +0 days 🔍
01/04/2026 +1055 days 🔍

Sourcesinfo

Advisory: GHSA-24pf-6prf-24ch
Status: Confirmed

CVE: CVE-2023-25567 (🔍)
GCVE (CVE): GCVE-0-2023-25567
GCVE (VulDB): GCVE-100-221050
CERT Bund: WID-SEC-2023-1238 - Red Hat Enterprise Linux: Mehrere Schwachstellen in verschiedenen Komponenten

Entryinfo

Created: 02/14/2023 21:10
Updated: 01/04/2026 03:05
Changes: 02/14/2023 21:10 (53), 03/16/2023 00:12 (1), 06/26/2025 19:40 (17), 01/04/2026 03:05 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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