Vulnerability-Lookup

CERTA-2011-AVI-677

Vulnerability from certfr_avis - Published: - Updated:

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 – Updated: 2024-08-07 00:09

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.

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	http://www.mandriva.com/security/advisories?name=…	vendor-advisoryx_refsource_MANDRIVA
	http://secunia.com/advisories/47153	third-party-advisoryx_refsource_SECUNIA
	http://lists.fedoraproject.org/pipermail/package-…	vendor-advisoryx_refsource_FEDORA
	http://www.ubuntu.com/usn/USN-1309-1	vendor-advisoryx_refsource_UBUNTU
	http://lists.opensuse.org/opensuse-updates/2011-1…	vendor-advisoryx_refsource_SUSE
	https://exchange.xforce.ibmcloud.com/vulnerabilit…	vdb-entryx_refsource_XF
	http://secunia.com/advisories/47178	third-party-advisoryx_refsource_SECUNIA
	https://www.isc.org/software/dhcp/advisories/cve-…	x_refsource_CONFIRM
	http://lists.fedoraproject.org/pipermail/package-…	vendor-advisoryx_refsource_FEDORA
	http://www.debian.org/security/2012/dsa-2519	vendor-advisoryx_refsource_DEBIAN
	http://www.securitytracker.com/id?1026393	vdb-entryx_refsource_SECTRACK
	http://security.gentoo.org/glsa/glsa-201301-06.xml	vendor-advisoryx_refsource_GENTOO
	http://www.securityfocus.com/bid/50971	vdb-entryx_refsource_BID

Show details on NVD website

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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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