PT-2012-2034 · Maradns · Maradns

Sam Trenholme · Published 2012-01-08 · Updated 2012-01-09 · CVE-2011-5055

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Name of the Vulnerable Software and Affected Versions MaraDNS versions 1.3.07.12 and 1.4.08

Description The issue allows remote attackers to cause a denial of service by sending many crafted queries with the Recursion Desired bit set, resulting in CPU consumption. This occurs because MaraDNS computes hash values for DNS data without properly restricting the ability to trigger hash collisions predictably.

Recommendations For MaraDNS version 1.3.07.12, update to a version that properly restricts hash collisions. For MaraDNS version 1.4.08, update to a version that properly restricts hash collisions. As a temporary workaround, consider restricting the ability to send crafted queries with the Recursion Desired bit set to minimize the risk of exploitation.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2011-5055

Affected Products

Maradns

References · 8

• http://samiam.org/blog/20111230.html · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2011-5055 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2011-5055 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2011-5055 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2011-5055 · Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=771428 · Note
• http://openwall.com/lists/oss-security/2012/01/03/13 · Note
• http://openwall.com/lists/oss-security/2012/01/03/6 · Note