SB2023051674 - Multiple vulnerabilities in Gss-ntlmssp 

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Main Vulnerability Database SB2023051674

SB2023051674 - Multiple vulnerabilities in Gss-ntlmssp

Published: May 16, 2023

Security Bulletin ID SB2023051674
Severity
Medium
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 secuirty vulnerabilities.


1) Out-of-bounds read (CVE-ID: CVE-2023-25567)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition when decoding target information. A remote attacker can send specially crafted NTLM request to the application, trigger an out-of-bounds read error and perform a denial of service (DoS) attack.

2) Memory leak (CVE-ID: CVE-2023-25566)

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak when parsing usernames. A remote attacker can force the application to leak memory and perform denial of service attack.


3) Release of invalid pointer or reference (CVE-ID: CVE-2023-25565)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition when decoding target information. A remote attacker can send specially crafted NTLM request to the application, trigger an out-of-bounds read error and perform a denial of service (DoS) attack.

4) Out-of-bounds write (CVE-ID: CVE-2023-25564)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary in the ntlm_str_convert() function error when decoding UTF16 strings. A remote attacker can send specially crafted NTLM request to the application, trigger an out-of-bounds write error and perform a denial of service (DoS) attack.


5) Out-of-bounds read (CVE-ID: CVE-2023-25563)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition when decoding NTLM fields. A remote attacker can send specially crafted NTLM request to the application, trigger an out-of-bounds read error and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References