The consume_labels function in avahi-core/dns.c in Avahi before 0.6.16 allows remote attackers to cause a denial of service (infinite loop) via a crafted compressed DNS response with a label that points to itself.

This update fixes a remote denial of service problem in avahi, where attackers could cause an endless loop. (CVE-2006-6870)

A flaw was discovered in Avahi's handling of compressed DNS packets.
If a specially crafted reply were received over the network, the Avahi daemon would go into an infinite loop, causing a denial of service.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The consume_labels function in avahi-core/dns.c in Avahi before 0.6.16 allows remote attackers to cause a denial of service (infinite loop) via a crafted compressed DNS response with a label that points to itself.

Updated packages are patched to address this issue.

This update shoul fix CVE-2006-6870 reported in #221440.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

avahi-0.6.11-3.fc5 should fix CVE-2006-6870 - the consume_labels function in avahi-core/dns.c in Avahi before 0.6.16 allows remote attackers to cause a denial of service (infinite loop) via a crafted compressed DNS response with a label that points to itself.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
29382	SuSE 10 Security Update : avahi (ZYPP Patch Number 2986)	Nessus	SuSE Local Security Checks	medium
27990	Ubuntu 5.10 / 6.06 LTS / 6.10 : avahi vulnerability (USN-402-1)	Nessus	Ubuntu Local Security Checks	medium
27161	openSUSE 10 Security Update : avahi (avahi-2982)	Nessus	SuSE Local Security Checks	medium
24620	Mandrake Linux Security Advisory : avahi (MDKSA-2007:003)	Nessus	Mandriva Local Security Checks	medium
24186	Fedora Core 6 : avahi-0.6.16-1.fc6 (2007-019)	Nessus	Fedora Local Security Checks	medium
24185	Fedora Core 5 : avahi-0.6.11-3.fc5 (2007-018)	Nessus	Fedora Local Security Checks	medium

Detections

Analytics

CVE-2006-6870

high

Tenable Plugins

medium

medium

medium

medium

medium

medium