CVE-2013-4322

CVE-2013-4322 is a medium-severity vulnerability in Apache Tomcat with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

• Severity: Medium (CVSS 2.0 base score 4.3)
• EPSS exploit prediction: 9% (95th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-20
• Affected product: Apache Tomcat
• Published: 2014-02-26
• Last modified: 2026-06-16

Description

Apache Tomcat before 6.0.39, 7.x before 7.0.50, and 8.x before 8.0.0-RC10 processes chunked transfer coding without properly handling (1) a large total amount of chunked data or (2) whitespace characters in an HTTP header value within a trailer field, which allows remote attackers to cause a denial of service by streaming data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-3544.

Frequently asked questions

What is CVE-2013-4322?

Apache Tomcat before 6.0.39, 7.x before 7.0.50, and 8.x before 8.0.0-RC10 processes chunked transfer coding without properly handling (1) a large total amount of chunked data or (2) whitespace characters in an HTTP header value within a trailer field, which allows remote attackers to cause a denial of service by streaming data. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-3544.

How severe is CVE-2013-4322?

CVE-2013-4322 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2013-4322 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-4322?

CVE-2013-4322 primarily affects Apache Tomcat. In total, 191 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-4322?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2013-4322 published?

CVE-2013-4322 was published on 2014-02-26 and last updated on 2026-06-16.

References

• http://advisories.mageia.org/MGASA-2014-0148.html
• http://marc.info/?l=bugtraq&m=144498216801440&w=2
• http://seclists.org/fulldisclosure/2014/Dec/23
• http://secunia.com/advisories/59036
• http://secunia.com/advisories/59675
• http://secunia.com/advisories/59722
• http://secunia.com/advisories/59724
• http://secunia.com/advisories/59873
• http://svn.apache.org/viewvc?view=revision&revision=1521834
• http://svn.apache.org/viewvc?view=revision&revision=1521864
• http://svn.apache.org/viewvc?view=revision&revision=1549522
• http://svn.apache.org/viewvc?view=revision&revision=1549523
• http://svn.apache.org/viewvc?view=revision&revision=1556540
• http://tomcat.apache.org/security-6.html
• http://tomcat.apache.org/security-7.html
• http://tomcat.apache.org/security-8.html
• http://www-01.ibm.com/support/docview.wss?uid=swg21667883
• http://www-01.ibm.com/support/docview.wss?uid=swg21675886
• http://www-01.ibm.com/support/docview.wss?uid=swg21677147
• http://www-01.ibm.com/support/docview.wss?uid=swg21678113
• http://www-01.ibm.com/support/docview.wss?uid=swg21678231
• http://www.debian.org/security/2016/dsa-3530
• http://www.mandriva.com/security/advisories?name=MDVSA-2015:052
• http://www.mandriva.com/security/advisories?name=MDVSA-2015:084
• http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
• http://www.oracle.com/technetwork/topics/security/cpujul2014-1972956.html
• http://www.oracle.com/technetwork/topics/security/cpuoct2014-1972960.html
• http://www.securityfocus.com/archive/1/534161/100/0/threaded
• http://www.securityfocus.com/bid/65767
• http://www.ubuntu.com/usn/USN-2130-1

Affected products (191)

• cpe:2.3:a:apache:tomcat:7.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.0:beta:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.2:beta:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.4:beta:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.10:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.11:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.12:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.13:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.14:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.15:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.16:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.17:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.18:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.19:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.20:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.21:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.22:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.23:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.24:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.25:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.26:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.27:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.28:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.29:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.30:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.31:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.32:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.33:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.34:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.35:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.36:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.37:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.38:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.39:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.40:*:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:7.0.41:*:*:*:*:*:*:*

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