SB2020012322 - Multiple vulnerabilities in OpenBSD LibreSSL

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Main Vulnerability Database SB2020012322

SB2020012322 - Multiple vulnerabilities in OpenBSD LibreSSL

Published: January 23, 2020 Updated: August 8, 2020

Security Bulletin ID SB2020012322
Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

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

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Memory leak (CVE-ID: CVE-2015-5333)

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

The vulnerability exists due to memory leak within the OBJ_obj2txt function in LibreSSL before 2.3.1 allows remote attackers to cause a denial of service (memory consumption) via a large number of ASN.1 object identifiers in X.509 certificates. A remote attacker can perform a denial of service attack.


2) Input validation error (CVE-ID: CVE-2015-5334)

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

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (program crash) or possible execute arbitrary code via a crafted X.509 certificate, which triggers a stack-based buffer overflow.


Remediation

Install update from vendor's website.

References