SB2019050201 - Ubuntu update for Memcached 

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Main Vulnerability Database SB2019050201

SB2019050201 - Ubuntu update for Memcached

Published: May 2, 2019

Security Bulletin ID SB2019050201
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-2019-11596)

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

The vulnerability exists due to a NULL pointer dreference error in the "lru mode" and "lru temp_ttl" commands when parsing specially crafted lru command messages passed passed to process_lru_command() function in memcached.c. A remote attacker can send a specially crafted HTTP request to the affected application and perform denial of service (DoS) attack.

Exploitation example:

echo -n "bHJ1IG1vZGUKb7G0AGxydWRl6gdtTk9UXw==" | base64 -d | nc 127.0.0.1 11211


Remediation

Install update from vendor's website.

References