certfr_avis - certa-2011-avi-669

CERTA-2011-AVI-669

Vulnerability from certfr_avis - Published: - Updated:

Une vulnérabilité dans Lighttpd permet à un utilisateur malveillant de provoquer un déni de service à distance.

Description

Un défaut de typage de variable dans le programme du décodeur base64 conduit à utiliser une valeur négative comme indice de tableau en langage C. Cette erreur permet à un utilisateur non authentifié de provoquer un déni de service à distance au moyen d'une requête HTTP.

Solution

La révision 2806 de la version 1.4.30 et la version 1.5 de Lighttpd corrigent ce problème.

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Lighttpd, version 1.4.x.

Impacted products

	Vendor	Product	Description

References

Title

Publication Time

CVE-2011-4362 (GCVE-0-2011-4362)

Vulnerability from cvelistv5 – Published: 2011-12-24 19:00 – Updated: 2024-08-07 00:09

Summary

Integer signedness error in the base64_decode function in the HTTP authentication functionality (http_auth.c) in lighttpd 1.4 before 1.4.30 and 1.5 before SVN revision 2806 allows remote attackers to cause a denial of service (segmentation fault) via crafted base64 input that triggers an out-of-bounds read with a negative index.

Severity ?

No CVSS data available.

CWE

Assigner

redhat

References

URL

Tags

	http://secunia.com/advisories/47260	third-party-advisoryx_refsource_SECUNIA
	http://archives.neohapsis.com/archives/bugtraq/20…	mailing-listx_refsource_BUGTRAQ
	http://www.openwall.com/lists/oss-security/2011/11/29/8	mailing-listx_refsource_MLIST
	https://bugzilla.redhat.com/show_bug.cgi?id=758624	x_refsource_CONFIRM
	http://www.debian.org/security/2011/dsa-2368	vendor-advisoryx_refsource_DEBIAN
	http://www.exploit-db.com/exploits/18295	exploitx_refsource_EXPLOIT-DB
	http://blog.pi3.com.pl/?p=277	x_refsource_MISC
	http://download.lighttpd.net/lighttpd/security/li…	x_refsource_CONFIRM
	http://www.openwall.com/lists/oss-security/2011/1…	mailing-listx_refsource_MLIST
	http://www.securitytracker.com/id?1026359	vdb-entryx_refsource_SECTRACK
	https://exchange.xforce.ibmcloud.com/vulnerabilit…	vdb-entryx_refsource_XF
	http://redmine.lighttpd.net/issues/2370	x_refsource_CONFIRM
	http://jvn.jp/en/jp/JVN37417423/index.html	third-party-advisoryx_refsource_JVN

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

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