SB2019112026 - Multiple vulnerabilities in GNU GnuPG

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Main Vulnerability Database SB2019112026

SB2019112026 - Multiple vulnerabilities in GNU GnuPG

Published: November 20, 2019 Updated: July 17, 2020

Security Bulletin ID SB2019112026
Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

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

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2015-1606)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing a crafted keyring file. A remote attackers can cause a denial of service (invalid read and use-after-free).

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.


2) Input validation error (CVE-ID: CVE-2015-1607)

The vulnerability allows a local non-authenticated attacker to perform a denial of service (DoS) attack.

kbx/keybox-search.c in GnuPG before 1.4.19, 2.0.x before 2.0.27, and 2.1.x before 2.1.2 does not properly handle bitwise left-shifts, which allows remote attackers to cause a denial of service (invalid read operation) via a crafted keyring file, related to sign extensions and "memcpy with overlapping ranges."


Remediation

Install update from vendor's website.

References