CVE-2011-0520

critical

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.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/64885

http://www.vupen.com/english/advisories/2011/0699

http://www.securityfocus.com/bid/45966

http://www.openwall.com/lists/oss-security/2011/01/24/6

http://www.openwall.com/lists/oss-security/2011/01/24/1

http://www.debian.org/security/2011/dsa-2196

http://secunia.com/advisories/43107

http://secunia.com/advisories/43027

http://osvdb.org/70630

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=610834

Details

Source: Mitre, NVD

Published: 2011-01-28

Updated: 2017-08-17

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical