SB2021063035 - Multiple vulnerabilities in RPM software manager

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Main Vulnerability Database SB2021063035

SB2021063035 - Multiple vulnerabilities in RPM software manager

Published: June 30, 2021 Updated: December 6, 2021

Security Bulletin ID SB2021063035
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Insufficient verification of data authenticity (CVE-ID: CVE-2021-20271)

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to an error in RPM's signature check functionality when reading package files. A remote attacker can create a specially crafted package with a modified signature header, trick the victim into installing and compromise the affected system.


2) Out-of-bounds read (CVE-ID: CVE-2021-20266)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the hdrblobInit() function in lib/header.c. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.


Remediation

Install update from vendor's website.

References