CVE-2011-1002

Exp

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 update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-1002 is rated High Exploit Risk (64.4/100): CVSS Medium severity, with high exploitation likelihood (EPSS 57.72%, 98th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2011-1002

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2011-1002

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-24 68.12% 57.72% -10.40%
2 2026-04-29 68.83% 68.12% -0.71%
3 2026-03-18 — 68.83% —

Full EPSS history (25 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-1002

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2011-1002

OS Trackers for CVE-2011-1002

vendor priority summary link
debian not yet assigned CVE-2011-1002 not yet assigned priority: Debian including 1 source packages (avahi), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2011-1002
gentoo normal CVE-2011-1002: 1 GLSA(s) (201110-17), 1 atom(s) (net-dns/avahi); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-1002
redhat medium — https://access.redhat.com/security/cve/CVE-2011-1002
suse medium CVE-2011-1002 severity moderate: SUSE including 108 source package names (avahi-0.6.31-20.59, avahi-0.6.32-2.3, …), 224 product×package rows across 27 product lines (SUSE Linux Enterprise Desktop 12, SUSE Linux Enterprise Desktop 12 SP1, … (27 product lines)): Fixed 224. https://www.suse.com/security/cve/CVE-2011-1002/
ubuntu medium CVE-2011-1002 medium priority: Ubuntu including 1 source packages (avahi), 6 status rows across 6 suites (dapper, hardy, karmic, lucid, maverick, upstream): released 5, ignored 1. https://ubuntu.com/security/CVE-2011-1002

Affected software / configurations for CVE-2011-1002

Vendor Product Version Raw CPE
avahi avahi <= 0.6.28 cpe:2.3:a:avahi:avahi:*:*:*:*:*:*:*:*
avahi avahi 0.1 cpe:2.3:a:avahi:avahi:0.1:*:*:*:*:*:*:*
avahi avahi 0.2 cpe:2.3:a:avahi:avahi:0.2:*:*:*:*:*:*:*
avahi avahi 0.3 cpe:2.3:a:avahi:avahi:0.3:*:*:*:*:*:*:*
avahi avahi 0.4 cpe:2.3:a:avahi:avahi:0.4:*:*:*:*:*:*:*
avahi avahi 0.5 cpe:2.3:a:avahi:avahi:0.5:*:*:*:*:*:*:*
avahi avahi 0.5.1 cpe:2.3:a:avahi:avahi:0.5.1:*:*:*:*:*:*:*
avahi avahi 0.5.2 cpe:2.3:a:avahi:avahi:0.5.2:*:*:*:*:*:*:*
avahi avahi 0.6.1 cpe:2.3:a:avahi:avahi:0.6.1:*:*:*:*:*:*:*
avahi avahi 0.6.2 cpe:2.3:a:avahi:avahi:0.6.2:*:*:*:*:*:*:*
avahi avahi 0.6.3 cpe:2.3:a:avahi:avahi:0.6.3:*:*:*:*:*:*:*
avahi avahi 0.6.4 cpe:2.3:a:avahi:avahi:0.6.4:*:*:*:*:*:*:*
avahi avahi 0.6.5 cpe:2.3:a:avahi:avahi:0.6.5:*:*:*:*:*:*:*
avahi avahi 0.6.6 cpe:2.3:a:avahi:avahi:0.6.6:*:*:*:*:*:*:*
avahi avahi 0.6.7 cpe:2.3:a:avahi:avahi:0.6.7:*:*:*:*:*:*:*
avahi avahi 0.6.8 cpe:2.3:a:avahi:avahi:0.6.8:*:*:*:*:*:*:*
avahi avahi 0.6.9 cpe:2.3:a:avahi:avahi:0.6.9:*:*:*:*:*:*:*
avahi avahi 0.6.10 cpe:2.3:a:avahi:avahi:0.6.10:*:*:*:*:*:*:*
avahi avahi 0.6.11 cpe:2.3:a:avahi:avahi:0.6.11:*:*:*:*:*:*:*
avahi avahi 0.6.12 cpe:2.3:a:avahi:avahi:0.6.12:*:*:*:*:*:*:*
avahi avahi 0.6.13 cpe:2.3:a:avahi:avahi:0.6.13:*:*:*:*:*:*:*
avahi avahi 0.6.14 cpe:2.3:a:avahi:avahi:0.6.14:*:*:*:*:*:*:*
avahi avahi 0.6.15 cpe:2.3:a:avahi:avahi:0.6.15:*:*:*:*:*:*:*
avahi avahi 0.6.16 cpe:2.3:a:avahi:avahi:0.6.16:*:*:*:*:*:*:*
avahi avahi 0.6.17 cpe:2.3:a:avahi:avahi:0.6.17:*:*:*:*:*:*:*
avahi avahi 0.6.18 cpe:2.3:a:avahi:avahi:0.6.18:*:*:*:*:*:*:*
avahi avahi 0.6.19 cpe:2.3:a:avahi:avahi:0.6.19:*:*:*:*:*:*:*
avahi avahi 0.6.20 cpe:2.3:a:avahi:avahi:0.6.20:*:*:*:*:*:*:*
avahi avahi 0.6.21 cpe:2.3:a:avahi:avahi:0.6.21:*:*:*:*:*:*:*
avahi avahi 0.6.22 cpe:2.3:a:avahi:avahi:0.6.22:*:*:*:*:*:*:*
avahi avahi 0.6.23 cpe:2.3:a:avahi:avahi:0.6.23:*:*:*:*:*:*:*
avahi avahi 0.6.24 cpe:2.3:a:avahi:avahi:0.6.24:*:*:*:*:*:*:*
avahi avahi 0.6.25 cpe:2.3:a:avahi:avahi:0.6.25:*:*:*:*:*:*:*
avahi avahi 0.6.26 cpe:2.3:a:avahi:avahi:0.6.26:*:*:*:*:*:*:*
avahi avahi 0.6.27 cpe:2.3:a:avahi:avahi:0.6.27:*:*:*:*:*:*:*
fedoraproject fedora 15 cpe:2.3:o:fedoraproject:fedora:15:*:*:*:*:*:*:*
redhat enterprise_linux 5.0 cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*
redhat enterprise_linux 6.0 cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
canonical ubuntu_linux 8.04 cpe:2.3:o:canonical:ubuntu_linux:8.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 9.10 cpe:2.3:o:canonical:ubuntu_linux:9.10:*:*:*:*:*:*:*
canonical ubuntu_linux 10.04 cpe:2.3:o:canonical:ubuntu_linux:10.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 10.10 cpe:2.3:o:canonical:ubuntu_linux:10.10:*:*:*:*:*:*:*
debian debian_linux 5.0 cpe:2.3:o:debian:debian_linux:5.0:*:*:*:*:*:*:*
debian debian_linux 6.0 cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*
debian debian_linux 7.0 cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*

References for CVE-2011-1002

URL Tags
http://avahi.org/ticket/325 Broken Link
http://git.0pointer.de/?p=avahi.git%3Ba=commit%3Bh=46109dfec75534fe270c0ab902576f685d5ab3a6 Broken Link
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055858.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2011-04/msg00000.html Third Party Advisory
http://openwall.com/lists/oss-security/2011/02/18/1 Mailing List Third Party Advisory
http://openwall.com/lists/oss-security/2011/02/18/4 Mailing List Third Party Advisory
http://osvdb.org/70948 Broken Link
http://secunia.com/advisories/43361 Broken Link Vendor Advisory
http://secunia.com/advisories/43465 Broken Link
http://secunia.com/advisories/43605 Broken Link
http://secunia.com/advisories/43673 Broken Link
http://secunia.com/advisories/44131 Broken Link
http://ubuntu.com/usn/usn-1084-1 Third Party Advisory
http://www.debian.org/security/2011/dsa-2174 Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2011:037 Broken Link
http://www.mandriva.com/security/advisories?name=MDVSA-2011:040 Broken Link
http://www.openwall.com/lists/oss-security/2011/02/22/9 Mailing List Third Party Advisory
http://www.redhat.com/support/errata/RHSA-2011-0436.html Broken Link
http://www.redhat.com/support/errata/RHSA-2011-0779.html Broken Link
http://www.securityfocus.com/bid/46446 Broken Link Third Party Advisory VDB Entry
http://www.vupen.com/english/advisories/2011/0448 Broken Link Vendor Advisory
http://www.vupen.com/english/advisories/2011/0499 Broken Link Vendor Advisory
http://www.vupen.com/english/advisories/2011/0511 Broken Link
http://www.vupen.com/english/advisories/2011/0565 Broken Link
http://www.vupen.com/english/advisories/2011/0601 Broken Link
http://www.vupen.com/english/advisories/2011/0670 Broken Link
http://www.vupen.com/english/advisories/2011/0969 Broken Link
http://xorl.wordpress.com/2011/02/20/cve-2011-1002-avahi-daemon-remote-denial-of-service/ Exploit Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=667187 Issue Tracking Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/65524 Not Applicable
https://exchange.xforce.ibmcloud.com/vulnerabilities/65525 Third Party Advisory VDB Entry
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