SB2019012316 - NULL pointer dereference in python2-tkinter (Alpine package)

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2019012316

SB2019012316 - NULL pointer dereference in python2-tkinter (Alpine package)

Published: January 23, 2019

Security Bulletin ID SB2019012316
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
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 1 security vulnerability.


1) NULL pointer dereference (CVE-ID: CVE-2019-5010)

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

The vulnerability exists due to the X509 certificate parser of the affected software improperly handles X509 certificates with a certificate extension that uses a Certificate Revocation List (CRL) distribution point with empty distributionPoint and cRLIssuer fields. A remote attacker can send a request to initiate a Transport Layer Security (TLS) connection using an X509 certificate that submits malicious input, trigger a NULL pointer dereference condition that causes the application to crash, resulting in a DoS condition.


Remediation

Install update from vendor's website.

References