CVE-2011-0520

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Summary

CVECVE-2011-0520
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2011-01-28 16:00:04 UTC
Updated2026-04-29 01:13:23 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v2.0 7.5 from [email protected]

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

Problem Types: CWE-119 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Maradns Maradns 1.4.03 All All All
Application Maradns Maradns 1.4.05 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
oss-security - CVE request: MaraDNS DoS via long queries af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
MaraDNS "compress_add_dlabel_points()" Buffer Overflow Vulnerability - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Vendor Advisory
Debian -- Security Information -- DSA-2196-1 maradns af854a3a-2127-422b-91ae-364da2661108 www.debian.org
IBM X-Force Exchange af854a3a-2127-422b-91ae-364da2661108 exchange.xforce.ibmcloud.com
oss-security - Re: CVE request: MaraDNS DoS via long queries af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
MaraDNS 'compress_add_dlabel_points()' Heap Buffer Overflow Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
osvdb.org/70630 af854a3a-2127-422b-91ae-364da2661108 osvdb.org
#610834 - maradns: crash on long name queries - Debian Bug report logs af854a3a-2127-422b-91ae-364da2661108 bugs.debian.org
Debian update for maradns - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com
Webmail- OVH af854a3a-2127-422b-91ae-364da2661108 www.vupen.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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