certfr_avis - certa-2011-avi-677

CERTA-2011-AVI-677

Vulnerability from certfr_avis

Une vulnérabilité dans ISC DHCP permet à une personne malintentionnée d'effectuer un déni de service à distance.

Description

Une vulnérabilité est présente dans ISC DHCP lorsqu'un opérateur de comparaison d'expression régulière (comme "˜=" ou "˜˜") est utilisé dans dhcpd.conf. La vulnérabilité peut être exploitée par un attaquant capable d'envoyer une requête DHCP spécialement conçue, soit directement soit par l'intermédiaire d'un relais DHCP, pour réaliser un déni de service.

Solution

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

ISC DHCP versions 4.0.x et supérieures.

Impacted products

	Vendor	Product	Description

References

Title

Publication Time

CVE-2011-4539 (GCVE-0-2011-4539)

Vulnerability from cvelistv5

Published

2011-12-08 11:00

Modified

2024-08-07 00:09

Severity ?

CWE

Summary

dhcpd in ISC DHCP 4.x before 4.2.3-P1 and 4.1-ESV before 4.1-ESV-R4 does not properly handle regular expressions in dhcpd.conf, which allows remote attackers to cause a denial of service (daemon crash) via a crafted request packet.

References

URL

Tags

	http://www.mandriva.com/security/advisories?name=MDVSA-2011:182	vendor-advisory, x_refsource_MANDRIVA
	http://secunia.com/advisories/47153	third-party-advisory, x_refsource_SECUNIA
	http://lists.fedoraproject.org/pipermail/package-announce/2012-January/071549.html	vendor-advisory, x_refsource_FEDORA
	http://www.ubuntu.com/usn/USN-1309-1	vendor-advisory, x_refsource_UBUNTU
	http://lists.opensuse.org/opensuse-updates/2011-12/msg00006.html	vendor-advisory, x_refsource_SUSE
	https://exchange.xforce.ibmcloud.com/vulnerabilities/71680	vdb-entry, x_refsource_XF
	http://secunia.com/advisories/47178	third-party-advisory, x_refsource_SECUNIA
	https://www.isc.org/software/dhcp/advisories/cve-2011-4539	x_refsource_CONFIRM
	http://lists.fedoraproject.org/pipermail/package-announce/2011-December/070980.html	vendor-advisory, x_refsource_FEDORA
	http://www.debian.org/security/2012/dsa-2519	vendor-advisory, x_refsource_DEBIAN
	http://www.securitytracker.com/id?1026393	vdb-entry, x_refsource_SECTRACK
	http://security.gentoo.org/glsa/glsa-201301-06.xml	vendor-advisory, x_refsource_GENTOO
	http://www.securityfocus.com/bid/50971	vdb-entry, x_refsource_BID

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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