CVE-2011-0520

N/A Unknown
Published: January 28, 2011 Modified: April 29, 2026
View on NVD

Description

The compress_add_dlabel_points function in dns/Compress.c in MaraDNS 1.4.03, 1.4.05, and probably other versions allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a long DNS hostname with a large number of labels, which triggers a heap-based buffer overflow.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

Login to generate AI explanation

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://osvdb.org/70630
Source: secalert@redhat.com
http://secunia.com/advisories/43027
Source: secalert@redhat.com
Vendor Advisory
http://secunia.com/advisories/43107
Source: secalert@redhat.com
http://www.securityfocus.com/bid/45966
Source: secalert@redhat.com
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=610834
Source: af854a3a-2127-422b-91ae-364da2661108
http://osvdb.org/70630
Source: af854a3a-2127-422b-91ae-364da2661108
http://secunia.com/advisories/43027
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
http://secunia.com/advisories/43107
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.debian.org/security/2011/dsa-2196
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2011/01/24/1
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2011/01/24/6
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.securityfocus.com/bid/45966
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.vupen.com/english/advisories/2011/0699
Source: af854a3a-2127-422b-91ae-364da2661108
https://exchange.xforce.ibmcloud.com/vulnerabilities/64885
Source: af854a3a-2127-422b-91ae-364da2661108

20 reference(s) from NVD

Quick Stats

CVSS v3 Score
N/A / 10.0
EPSS (Exploit Probability)
5.2%
91th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

maradns