SB2011012804 - Heap-based buffer overflow in MaraDNS

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Main Vulnerability Database SB2011012804

SB2011012804 - Heap-based buffer overflow in MaraDNS

Published: January 28, 2011 Updated: August 11, 2020

Security Bulletin ID SB2011012804
Severity
Medium
Patch available
NO
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Heap-based buffer overflow (CVE-ID: CVE-2011-0520)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in The compress_add_dlabel_points function in dns/Compress.c in MaraDNS 1.4.03, 1.4.05, and probably other versions. A remote attacker can use a long DNS hostname with a large number of labels to trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References