medium
5
CWE
20
Advisory Published
CVE Published
Updated

CVE-2012-3544: Input Validation

First published: Fri May 10 2013(Updated: )

A denial of service flaw was found in the way chunked transfer encoding input filter of Apache Tomcat, an Apache Servlet/JSP Engine, processed CRLF sequences at the end of data chunks in certain circumstances. When the chunked transfer encoding was enabled, a remote attacker could issue a specially-crafted request that, when processed would lead to (limited) denial of service of the Apache Tomcat server. Relevant upstream patch: * for Apache Tomcat 6.x: <a href="http://svn.apache.org/viewvc?view=revision&amp;revision=1476592">http://svn.apache.org/viewvc?view=revision&amp;revision=1476592</a> * for Apache Tomcat 7:x: <a href="http://svn.apache.org/viewvc?view=rev&amp;rev=1378702">http://svn.apache.org/viewvc?view=rev&amp;rev=1378702</a> <a href="http://svn.apache.org/viewvc?view=rev&amp;rev=1378921">http://svn.apache.org/viewvc?view=rev&amp;rev=1378921</a>

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/Apache Tomcat<6.0.37
6.0.37
redhat/Apache Tomcat<7.0.30
7.0.30
redhat/apache-commons-daemon-eap6<1:1.0.15-4.redhat_1.ep6.el5
1:1.0.15-4.redhat_1.ep6.el5
redhat/apache-commons-daemon-jsvc-eap6<1:1.0.15-1.redhat_1.ep6.el5
1:1.0.15-1.redhat_1.ep6.el5
redhat/apache-commons-pool-eap6<0:1.6-6.redhat_4.ep6.el5
0:1.6-6.redhat_4.ep6.el5
redhat/dom4j<0:1.6.1-19.redhat_5.ep6.el5
0:1.6.1-19.redhat_5.ep6.el5
redhat/ecj3<1:3.7.2-6.redhat_1.ep6.el5
1:3.7.2-6.redhat_1.ep6.el5
redhat/httpd<0:2.2.22-23.ep6.el5
0:2.2.22-23.ep6.el5
redhat/tomcat6<0:6.0.37-8_patch_01.ep6.el5
0:6.0.37-8_patch_01.ep6.el5
redhat/tomcat7<0:7.0.40-9_patch_01.ep6.el5
0:7.0.40-9_patch_01.ep6.el5
redhat/tomcat-native<0:1.1.27-4.redhat_1.ep6.el5
0:1.1.27-4.redhat_1.ep6.el5
redhat/apache-commons-daemon-eap6<1:1.0.15-4.redhat_1.ep6.el6
1:1.0.15-4.redhat_1.ep6.el6
redhat/apache-commons-daemon-jsvc-eap6<1:1.0.15-1.redhat_1.ep6.el6
1:1.0.15-1.redhat_1.ep6.el6
redhat/apache-commons-pool-eap6<0:1.6-6.redhat_4.ep6.el6
0:1.6-6.redhat_4.ep6.el6
redhat/dom4j<0:1.6.1-19.redhat_5.ep6.el6
0:1.6.1-19.redhat_5.ep6.el6
redhat/ecj3<1:3.7.2-6.redhat_1.ep6.el6
1:3.7.2-6.redhat_1.ep6.el6
redhat/httpd<0:2.2.22-23.ep6.el6
0:2.2.22-23.ep6.el6
redhat/tomcat6<0:6.0.37-10_patch_01.ep6.el6
0:6.0.37-10_patch_01.ep6.el6
redhat/tomcat7<0:7.0.40-5_patch_01.ep6.el6
0:7.0.40-5_patch_01.ep6.el6
redhat/tomcat-native<0:1.1.27-4.redhat_1.ep6.el6
0:1.1.27-4.redhat_1.ep6.el6
Tomcat=6.0
Tomcat=6.0.0
Tomcat=6.0.0-alpha
Tomcat=6.0.1
Tomcat=6.0.1-alpha
Tomcat=6.0.2
Tomcat=6.0.2-alpha
Tomcat=6.0.2-beta
Tomcat=6.0.3
Tomcat=6.0.4
Tomcat=6.0.4-alpha
Tomcat=6.0.5
Tomcat=6.0.6
Tomcat=6.0.6-alpha
Tomcat=6.0.7
Tomcat=6.0.7-alpha
Tomcat=6.0.7-beta
Tomcat=6.0.8
Tomcat=6.0.8-alpha
Tomcat=6.0.9
Tomcat=6.0.9-beta
Tomcat=6.0.10
Tomcat=6.0.11
Tomcat=6.0.12
Tomcat=6.0.13
Tomcat=6.0.14
Tomcat=6.0.15
Tomcat=6.0.16
Tomcat=6.0.17
Tomcat=6.0.18
Tomcat=6.0.19
Tomcat=6.0.20
Tomcat=6.0.24
Tomcat=6.0.26
Tomcat=6.0.27
Tomcat=6.0.28
Tomcat=6.0.29
Tomcat=6.0.30
Tomcat=6.0.31
Tomcat=6.0.32
Tomcat=6.0.33
Tomcat=6.0.35
Tomcat=6.0.36
Tomcat=7.0.0
Tomcat=7.0.0-beta
Tomcat=7.0.1
Tomcat=7.0.2
Tomcat=7.0.2-beta
Tomcat=7.0.3
Tomcat=7.0.4
Tomcat=7.0.4-beta
Tomcat=7.0.5
Tomcat=7.0.6
Tomcat=7.0.7
Tomcat=7.0.8
Tomcat=7.0.9
Tomcat=7.0.10
Tomcat=7.0.11
Tomcat=7.0.12
Tomcat=7.0.13
Tomcat=7.0.14
Tomcat=7.0.15
Tomcat=7.0.16
Tomcat=7.0.17
Tomcat=7.0.18
Tomcat=7.0.19
Tomcat=7.0.20
Tomcat=7.0.21
Tomcat=7.0.22
Tomcat=7.0.23
Tomcat=7.0.25
Tomcat=7.0.28

Remedy

http://svn.apache.org/viewvc/tomcat/tc6.0.x/trunk/java/org/apache/coyote/http11/filters/ChunkedInputFilter.java?r1=1476592&r2=1476591&pathrev=1476592

Remedy

http://svn.apache.org/viewvc?view=revision&revision=1378702

Remedy

http://svn.apache.org/viewvc?view=revision&revision=1378921

Remedy

http://svn.apache.org/viewvc?view=revision&revision=1476592

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2012-3544?

    CVE-2012-3544 has been assigned a severity rating of medium due to its potential to cause denial of service.

  • How do I fix CVE-2012-3544?

    To fix CVE-2012-3544, update Apache Tomcat to the latest version or apply the specific patches available for affected releases.

  • Which versions of Apache Tomcat are affected by CVE-2012-3544?

    CVE-2012-3544 affects Apache Tomcat versions up to 7.0.23 and 6.0.36.

  • Can CVE-2012-3544 be exploited remotely?

    Yes, CVE-2012-3544 can be exploited remotely by attackers who can send specially crafted HTTP requests.

  • What are the consequences of an attack exploiting CVE-2012-3544?

    Exploiting CVE-2012-3544 can lead to a denial of service situation, causing the affected server to become unresponsive.

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