SB2023022744 - Ubuntu update for nss 

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Main Vulnerability Database SB2023022744

SB2023022744 - Ubuntu update for nss

Published: February 27, 2023

Security Bulletin ID SB2023022744
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Stack-based buffer overflow (CVE-ID: CVE-2022-3479)

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

The vulnerability exists due to a boundary error within the NSS_GetClientAuthData() function in /lib/ssl/authcert.c when accessing gnutls server without a user certificate in the database. A remote attacker can trigger a stack-based buffer overflow and crash the application using the affected library.


2) Out-of-bounds write (CVE-ID: CVE-2023-0767)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing PKCS 12 Safe Bag attributes. A remote attacker can create a specially crafted PKCS 12 cert bundle, trick the victim into loading it, trigger an out-of-bounds write and execute arbitrary code on the target system.


Remediation

Install update from vendor's website.

References