What is CVE-2011-1002?

CVE-2011-1002 is a vulnerability in Avahi, classified under Loop with Unreachable Exit Condition (Infinite Loop). Published 2011-02-22.

Is CVE-2011-1002 known to be exploited?

21 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Avahi

CVE-2011-1002

avahi-core/socket.c in avahi-daemon in Avahi before 0.6.29 allows remote attackers to cause a denial of service (infinite loop) via an empty mDNS (1) IPv4 or (2) IPv6 UDP packet to port 5353. NOTE: this vulnerability exists because of an incorrect fix for CVE-2010-2244.

Published 2011-02-22 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.294 (98.1th percentile), scored 2026-09-29.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.294 · newest: 0.294 · change: 0.000

Affected products

Avahi — versions 0.1, 0.2, 0.3
Canonical Ubuntu Linux — versions 8.04, 9.10, 10.04
Debian Linux — versions 5.0, 6.0, 7.0
Fedoraproject Fedora — versions 15
Red Hat Enterprise Linux — versions 5.0, 6.0

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

Public proof-of-concept exploits

References

www.redhat.com/support/errata/RHSA-2011-0779.html (vendor-advisory, Broken Link)
exchange.xforce.ibmcloud.com/vulnerabilities/65525 (VDB Entry, Third Party Advisory, vdb-entry)
www.openwall.com/lists/oss-security/2011/02/22/9 (mailing-list, Mailing List, Third Party Advisory)
www.redhat.com/support/errata/RHSA-2011-0436.html (vendor-advisory, Broken Link)
www.vupen.com/english/advisories/2011/0511 (vdb-entry, Broken Link)
openwall.com/lists/oss-security/2011/02/18/1 (mailing-list, Mailing List, Third Party Advisory)
secunia.com/advisories/43605 (Broken Link, third-party-advisory)
secunia.com/advisories/43465 (Broken Link, third-party-advisory)
secunia.com/advisories/43673 (Broken Link, third-party-advisory)
www.vupen.com/english/advisories/2011/0601 (vdb-entry, Broken Link)

Frequently asked questions

What is CVE-2011-1002?: CVE-2011-1002 is a vulnerability in Avahi, classified under Loop with Unreachable Exit Condition (Infinite Loop). Published 2011-02-22.
Is CVE-2011-1002 known to be exploited?: 21 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.