CVE-2023-25567 GSS-NTLMSSP vulnerable to out-of-bounds read when decoding target information

2023-02-1417:35:59

CWE-125

GitHub_M

www.cve.org

gss-ntlmssp

mechglue plugin

gssapi library

ntlm authentication

out-of-bounds read

security vulnerability

denial-of-service

fixed version 1.2.0.

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

7.5

Confidence

High

EPSS

0.001

Percentile

45.8%

JSON

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.

CNA Affected

[
  {
    "vendor": "gssapi",
    "product": "gss-ntlmssp",
    "versions": [
      {
        "version": "< 1.2.0",
        "status": "affected"
      }
    ]
  }
]