Vulnerability identifier: #VU64510

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-3544

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache Tomcat
Server applications / Web servers

Vendor: Apache Foundation

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack by streaming data.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Apache Tomcat: 6.0.0 - 6.0.36, 7.0.0 - 7.0.29

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External links
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
http://svn.apache.org/viewvc?view=revision&revision=1378702
http://svn.apache.org/viewvc?view=revision&revision=1378921
http://svn.apache.org/viewvc?view=revision&revision=1476592
http://tomcat.apache.org/security-6.html
http://tomcat.apache.org/security-7.html
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

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.