CVE-2012-3544

Apache Tomcat 6.x before 6.0.37 and 7.x before 7.0.30 does not properly handle chunk extensions in chunked transfer coding, which allows remote attackers to cause a denial of service by streaming data.

Published: 2013-06-01 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2012-3544 is rated Moderate Risk (54.4/100): CVSS Medium severity, with high exploitation likelihood (EPSS 44.77%, 98th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

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

Exploit prediction scoring system (EPSS) score for CVE-2012-3544

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 2026-03-02 44.48% 44.77% +0.29%
2 2025-12-16 51.02% 44.48% -6.54%
3 2025-12-10 — 51.02% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2012-3544

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-2012-3544

GitHub Security Advisory for CVE-2012-3544

GHSA-qfxv-3ppc-7qg5 · Severity: medium · Ecosystem: maven — Apache Tomcat Vulnerable to Denial of Service (DoS) via Improper Handling of chunk extensions

OS Trackers for CVE-2012-3544

vendor priority summary link
gentoo normal CVE-2012-3544: 1 GLSA(s) (201412-29), 1 atom(s) (www-servers/tomcat); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2012-3544
redhat medium — https://access.redhat.com/security/cve/CVE-2012-3544
suse low CVE-2012-3544 severity low: SUSE including 17 source package names (libtcnative-1-0-1.3.3-12.2.1, tomcat6-6.0.18-20.35.42.1, …), 59 product×package rows across 7 product lines (SUSE Linux Enterprise Server 11 SP1-TERADATA, SUSE Linux Enterprise Server 11 SP2, … (7 product lines)): Fixed 59. https://www.suse.com/security/cve/CVE-2012-3544/
ubuntu medium CVE-2012-3544 medium priority: Ubuntu including 2 source packages (tomcat6, tomcat7), 26 status rows across 13 suites (lucid, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): not-affected 16, released 5, DNE 3, ignored 2. https://ubuntu.com/security/CVE-2012-3544

Affected software / configurations for CVE-2012-3544

Vendor Product Version Raw CPE
apache tomcat 6.0 cpe:2.3:a:apache:tomcat:6.0:*:*:*:*:*:*:*
apache tomcat 6.0.0 cpe:2.3:a:apache:tomcat:6.0.0:*:*:*:*:*:*:*
apache tomcat 6.0.0 cpe:2.3:a:apache:tomcat:6.0.0:alpha:*:*:*:*:*:*
apache tomcat 6.0.1 cpe:2.3:a:apache:tomcat:6.0.1:*:*:*:*:*:*:*
apache tomcat 6.0.1 cpe:2.3:a:apache:tomcat:6.0.1:alpha:*:*:*:*:*:*
apache tomcat 6.0.2 cpe:2.3:a:apache:tomcat:6.0.2:*:*:*:*:*:*:*
apache tomcat 6.0.2 cpe:2.3:a:apache:tomcat:6.0.2:alpha:*:*:*:*:*:*
apache tomcat 6.0.2 cpe:2.3:a:apache:tomcat:6.0.2:beta:*:*:*:*:*:*
apache tomcat 6.0.3 cpe:2.3:a:apache:tomcat:6.0.3:*:*:*:*:*:*:*
apache tomcat 6.0.4 cpe:2.3:a:apache:tomcat:6.0.4:*:*:*:*:*:*:*
apache tomcat 6.0.4 cpe:2.3:a:apache:tomcat:6.0.4:alpha:*:*:*:*:*:*
apache tomcat 6.0.5 cpe:2.3:a:apache:tomcat:6.0.5:*:*:*:*:*:*:*
apache tomcat 6.0.6 cpe:2.3:a:apache:tomcat:6.0.6:*:*:*:*:*:*:*
apache tomcat 6.0.6 cpe:2.3:a:apache:tomcat:6.0.6:alpha:*:*:*:*:*:*
apache tomcat 6.0.7 cpe:2.3:a:apache:tomcat:6.0.7:*:*:*:*:*:*:*
apache tomcat 6.0.7 cpe:2.3:a:apache:tomcat:6.0.7:alpha:*:*:*:*:*:*
apache tomcat 6.0.7 cpe:2.3:a:apache:tomcat:6.0.7:beta:*:*:*:*:*:*
apache tomcat 6.0.8 cpe:2.3:a:apache:tomcat:6.0.8:*:*:*:*:*:*:*
apache tomcat 6.0.8 cpe:2.3:a:apache:tomcat:6.0.8:alpha:*:*:*:*:*:*
apache tomcat 6.0.9 cpe:2.3:a:apache:tomcat:6.0.9:*:*:*:*:*:*:*
apache tomcat 6.0.9 cpe:2.3:a:apache:tomcat:6.0.9:beta:*:*:*:*:*:*
apache tomcat 6.0.10 cpe:2.3:a:apache:tomcat:6.0.10:*:*:*:*:*:*:*
apache tomcat 6.0.11 cpe:2.3:a:apache:tomcat:6.0.11:*:*:*:*:*:*:*
apache tomcat 6.0.12 cpe:2.3:a:apache:tomcat:6.0.12:*:*:*:*:*:*:*
apache tomcat 6.0.13 cpe:2.3:a:apache:tomcat:6.0.13:*:*:*:*:*:*:*
apache tomcat 6.0.14 cpe:2.3:a:apache:tomcat:6.0.14:*:*:*:*:*:*:*
apache tomcat 6.0.15 cpe:2.3:a:apache:tomcat:6.0.15:*:*:*:*:*:*:*
apache tomcat 6.0.16 cpe:2.3:a:apache:tomcat:6.0.16:*:*:*:*:*:*:*
apache tomcat 6.0.17 cpe:2.3:a:apache:tomcat:6.0.17:*:*:*:*:*:*:*
apache tomcat 6.0.18 cpe:2.3:a:apache:tomcat:6.0.18:*:*:*:*:*:*:*
apache tomcat 6.0.19 cpe:2.3:a:apache:tomcat:6.0.19:*:*:*:*:*:*:*
apache tomcat 6.0.20 cpe:2.3:a:apache:tomcat:6.0.20:*:*:*:*:*:*:*
apache tomcat 6.0.24 cpe:2.3:a:apache:tomcat:6.0.24:*:*:*:*:*:*:*
apache tomcat 6.0.26 cpe:2.3:a:apache:tomcat:6.0.26:*:*:*:*:*:*:*
apache tomcat 6.0.27 cpe:2.3:a:apache:tomcat:6.0.27:*:*:*:*:*:*:*
apache tomcat 6.0.28 cpe:2.3:a:apache:tomcat:6.0.28:*:*:*:*:*:*:*
apache tomcat 6.0.29 cpe:2.3:a:apache:tomcat:6.0.29:*:*:*:*:*:*:*
apache tomcat 6.0.30 cpe:2.3:a:apache:tomcat:6.0.30:*:*:*:*:*:*:*
apache tomcat 6.0.31 cpe:2.3:a:apache:tomcat:6.0.31:*:*:*:*:*:*:*
apache tomcat 6.0.32 cpe:2.3:a:apache:tomcat:6.0.32:*:*:*:*:*:*:*
apache tomcat 6.0.33 cpe:2.3:a:apache:tomcat:6.0.33:*:*:*:*:*:*:*
apache tomcat 6.0.35 cpe:2.3:a:apache:tomcat:6.0.35:*:*:*:*:*:*:*
apache tomcat 6.0.36 cpe:2.3:a:apache:tomcat:6.0.36:*:*:*:*:*:*:*
apache tomcat 7.0.0 cpe:2.3:a:apache:tomcat:7.0.0:*:*:*:*:*:*:*
apache tomcat 7.0.0 cpe:2.3:a:apache:tomcat:7.0.0:beta:*:*:*:*:*:*
apache tomcat 7.0.1 cpe:2.3:a:apache:tomcat:7.0.1:*:*:*:*:*:*:*
apache tomcat 7.0.2 cpe:2.3:a:apache:tomcat:7.0.2:*:*:*:*:*:*:*
apache tomcat 7.0.2 cpe:2.3:a:apache:tomcat:7.0.2:beta:*:*:*:*:*:*
apache tomcat 7.0.3 cpe:2.3:a:apache:tomcat:7.0.3:*:*:*:*:*:*:*
apache tomcat 7.0.4 cpe:2.3:a:apache:tomcat:7.0.4:*:*:*:*:*:*:*
apache tomcat 7.0.4 cpe:2.3:a:apache:tomcat:7.0.4:beta:*:*:*:*:*:*
apache tomcat 7.0.5 cpe:2.3:a:apache:tomcat:7.0.5:*:*:*:*:*:*:*
apache tomcat 7.0.6 cpe:2.3:a:apache:tomcat:7.0.6:*:*:*:*:*:*:*
apache tomcat 7.0.7 cpe:2.3:a:apache:tomcat:7.0.7:*:*:*:*:*:*:*
apache tomcat 7.0.8 cpe:2.3:a:apache:tomcat:7.0.8:*:*:*:*:*:*:*
apache tomcat 7.0.9 cpe:2.3:a:apache:tomcat:7.0.9:*:*:*:*:*:*:*
apache tomcat 7.0.10 cpe:2.3:a:apache:tomcat:7.0.10:*:*:*:*:*:*:*
apache tomcat 7.0.11 cpe:2.3:a:apache:tomcat:7.0.11:*:*:*:*:*:*:*
apache tomcat 7.0.12 cpe:2.3:a:apache:tomcat:7.0.12:*:*:*:*:*:*:*
apache tomcat 7.0.13 cpe:2.3:a:apache:tomcat:7.0.13:*:*:*:*:*:*:*
apache tomcat 7.0.14 cpe:2.3:a:apache:tomcat:7.0.14:*:*:*:*:*:*:*
apache tomcat 7.0.15 cpe:2.3:a:apache:tomcat:7.0.15:*:*:*:*:*:*:*
apache tomcat 7.0.16 cpe:2.3:a:apache:tomcat:7.0.16:*:*:*:*:*:*:*
apache tomcat 7.0.17 cpe:2.3:a:apache:tomcat:7.0.17:*:*:*:*:*:*:*
apache tomcat 7.0.18 cpe:2.3:a:apache:tomcat:7.0.18:*:*:*:*:*:*:*
apache tomcat 7.0.19 cpe:2.3:a:apache:tomcat:7.0.19:*:*:*:*:*:*:*
apache tomcat 7.0.20 cpe:2.3:a:apache:tomcat:7.0.20:*:*:*:*:*:*:*
apache tomcat 7.0.21 cpe:2.3:a:apache:tomcat:7.0.21:*:*:*:*:*:*:*
apache tomcat 7.0.22 cpe:2.3:a:apache:tomcat:7.0.22:*:*:*:*:*:*:*
apache tomcat 7.0.23 cpe:2.3:a:apache:tomcat:7.0.23:*:*:*:*:*:*:*
apache tomcat 7.0.25 cpe:2.3:a:apache:tomcat:7.0.25:*:*:*:*:*:*:*
apache tomcat 7.0.28 cpe:2.3:a:apache:tomcat:7.0.28:*:*:*:*:*:*:*

References for CVE-2012-3544

URL Tags
http://archives.neohapsis.com/archives/bugtraq/2013-05/0042.html
http://seclists.org/fulldisclosure/2014/Dec/23
http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/java/org/apache/coyote/http11/filters/ChunkedInputFilter.java?r1=1476592&r2=1476591&pathrev=1476592 Patch
http://svn.apache.org/viewvc?view=revision&revision=1378702 Patch
http://svn.apache.org/viewvc?view=revision&revision=1378921 Patch
http://svn.apache.org/viewvc?view=revision&revision=1476592 Patch
http://tomcat.apache.org/security-6.html Vendor Advisory
http://tomcat.apache.org/security-7.html Vendor Advisory
http://www.oracle.com/technetwork/topics/security/cpujan2014-1972949.html
http://www.oracle.com/technetwork/topics/security/cpujul2014-1972956.html
http://www.securityfocus.com/archive/1/534161/100/0/threaded
http://www.securityfocus.com/bid/59797
http://www.securityfocus.com/bid/64758
http://www.ubuntu.com/usn/USN-1841-1
http://www.vmware.com/security/advisories/VMSA-2014-0012.html
https://lists.apache.org/thread.html/37220405a377c0182d2afdbc36461c4783b2930fbeae3a17f1333113%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/39ae1f0bd5867c15755a6f959b271ade1aea04ccdc3b2e639dcd903b%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/b84ad1258a89de5c9c853c7f2d3ad77e5b8b2930be9e132d5cef6b95%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/b8a1bf18155b552dcf9a928ba808cbadad84c236d85eab3033662cfb%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/r03c597a64de790ba42c167efacfa23300c3d6c9fe589ab87fe02859c%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/r587e50b86c1a96ee301f751d50294072d142fd6dc08a8987ae9f3a9b%40%3Cdev.tomcat.apache.org%3E
cvelogic Threat Intelligence