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Fencer Intel
medium 6.4

CVE-2010-2227 json

Apache Tomcat does not properly handle an invalid Transfer-Encoding header

published 2010-07-13 16 y ago modified 2026-06-16 4 mo ago also GHSA-cxg2-49rq-8gcr , EUVD-2022-3661

cvss
6.4
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
54.8%
EPSS 54.8% chance of exploitation in 30 days, percentile 99%
public exploits
2
Metasploit

Summary

Apache Tomcat 5.5.0 through 5.5.29, 6.0.0 through 6.0.27, and 7.0.0 beta does not properly handle an invalid Transfer-Encoding header, which allows remote attackers to cause a denial of service (application outage) or obtain sensitive information via a crafted header that interferes with "recycling of a buffer."

Patch / fix

  • maven org.apache.tomcat:tomcat 5.5.30, 6.0.28, 7.0.2
  • tomcat5 certificate system 7.3 5.5.23-0jpp_4rh.19
  • tomcat5-jasper certificate system 7.3 5.5.23-0jpp_4rh.19
  • tomcat5-common-lib certificate system 7.3 5.5.23-0jpp_4rh.19
  • tomcat5-server-lib certificate system 7.3 5.5.23-0jpp_4rh.19
  • tomcat5-jsp-2.0-api certificate system 7.3 5.5.23-0jpp_4rh.19
  • tomcat5-servlet-2.4-api certificate system 7.3 5.5.23-0jpp_4rh.19
  • jbossweb jboss enterprise application platform 4.3.0, jboss enterprise application platform 4.2.0 2.0.0-6.CP14.0jpp.ep1.1.el4
  • jbossweb jboss enterprise application platform 4.3.0, jboss enterprise application platform 4.2.0 2.0.0-6.CP14.0jpp.ep1.1.el5

red hat advisories RHSA-2010:0693RHSA-2010:0584RHSA-2010:0583RHSA-2010:0582RHSA-2010:0581RHSA-2010:0580

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2010-2227 updated cvss 6.4

tomcat: information leak vulnerability in the handling of 'Transfer-Encoding' header

  • Red Hat Application Server v2 4AS tomcat5 5.5.23-0jpp_4rh.17, tomcat5-jasper 5.5.23-0jpp_4rh.17, tomcat5-webapps 5.5.23-0jpp_4rh.17, tomcat5-common-lib 5.5.23-0jpp_4rh.17, tomcat5-server-lib 5.5.23-0jpp_4rh.17, tomcat5-jsp-2.0-api 5.5.23-0jpp_4rh.17, +5 more Red Hat Application Server v2 4ES tomcat5 5.5.23-0jpp_4rh.17, tomcat5-jasper 5.5.23-0jpp_4rh.17, tomcat5-webapps 5.5.23-0jpp_4rh.17, tomcat5-common-lib 5.5.23-0jpp_4rh.17, tomcat5-server-lib 5.5.23-0jpp_4rh.17, tomcat5-jsp-2.0-api 5.5.23-0jpp_4rh.17, +5 more Red Hat Application Server v2 4WS tomcat5 5.5.23-0jpp_4rh.17, tomcat5-jasper 5.5.23-0jpp_4rh.17, tomcat5-webapps 5.5.23-0jpp_4rh.17, tomcat5-common-lib 5.5.23-0jpp_4rh.17, tomcat5-server-lib 5.5.23-0jpp_4rh.17, tomcat5-jsp-2.0-api 5.5.23-0jpp_4rh.17, +5 more
    fixed: vendor fix RHSA-2010:0582
  • Red Hat Certificate System 7.3 for 4AS tomcat5 5.5.23-0jpp_4rh.19, tomcat5-jasper 5.5.23-0jpp_4rh.19, tomcat5-common-lib 5.5.23-0jpp_4rh.19, tomcat5-server-lib 5.5.23-0jpp_4rh.19, tomcat5-jsp-2.0-api 5.5.23-0jpp_4rh.19, tomcat5-servlet-2.4-api 5.5.23-0jpp_4rh.19 Red Hat Certificate System 7.3 for 4ES tomcat5 5.5.23-0jpp_4rh.19, tomcat5-jasper 5.5.23-0jpp_4rh.19, tomcat5-common-lib 5.5.23-0jpp_4rh.19, tomcat5-server-lib 5.5.23-0jpp_4rh.19, tomcat5-jsp-2.0-api 5.5.23-0jpp_4rh.19, tomcat5-servlet-2.4-api 5.5.23-0jpp_4rh.19
    fixed: vendor fix RHSA-2010:0693
  • Red Hat Developer Suite v.3 (AS v.4) tomcat5 5.5.23-0jpp_21rh, tomcat5-jasper 5.5.23-0jpp_21rh, tomcat5-common-lib 5.5.23-0jpp_21rh, tomcat5-server-lib 5.5.23-0jpp_21rh, tomcat5-jsp-2.0-api 5.5.23-0jpp_21rh, tomcat5-servlet-2.4-api 5.5.23-0jpp_21rh Red Hat Developer Suite v.3 (ES v.4) tomcat5 5.5.23-0jpp_21rh, tomcat5-jasper 5.5.23-0jpp_21rh, tomcat5-common-lib 5.5.23-0jpp_21rh, tomcat5-server-lib 5.5.23-0jpp_21rh, tomcat5-jsp-2.0-api 5.5.23-0jpp_21rh, tomcat5-servlet-2.4-api 5.5.23-0jpp_21rh Red Hat Developer Suite v.3 (WS v.4) tomcat5 5.5.23-0jpp_21rh, tomcat5-jasper 5.5.23-0jpp_21rh, tomcat5-common-lib 5.5.23-0jpp_21rh, tomcat5-server-lib 5.5.23-0jpp_21rh, tomcat5-jsp-2.0-api 5.5.23-0jpp_21rh, tomcat5-servlet-2.4-api 5.5.23-0jpp_21rh
    fixed: vendor fix RHSA-2010:0583
  • Red Hat Enterprise Linux (v. 5 server) tomcat5 5.5.23-0jpp.9.el5_5, tomcat5-jasper 5.5.23-0jpp.9.el5_5, tomcat5-webapps 5.5.23-0jpp.9.el5_5, tomcat5-common-lib 5.5.23-0jpp.9.el5_5, tomcat5-server-lib 5.5.23-0jpp.9.el5_5, tomcat5-jsp-2.0-api 5.5.23-0jpp.9.el5_5, +5 more Red Hat Enterprise Linux Desktop (v. 5 client) tomcat5 5.5.23-0jpp.9.el5_5, tomcat5-jsp-2.0-api 5.5.23-0jpp.9.el5_5, tomcat5-servlet-2.4-api 5.5.23-0jpp.9.el5_5 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) tomcat5 5.5.23-0jpp.9.el5_5, tomcat5-jasper 5.5.23-0jpp.9.el5_5, tomcat5-webapps 5.5.23-0jpp.9.el5_5, tomcat5-common-lib 5.5.23-0jpp.9.el5_5, tomcat5-server-lib 5.5.23-0jpp.9.el5_5, tomcat5-admin-webapps 5.5.23-0jpp.9.el5_5, +3 more
    fixed: vendor fix RHSA-2010:0580
  • Red Hat JBoss Enterprise Application Platform 4.2.0 for RHEL 4 AS jbossweb 2.0.0-6.CP14.0jpp.ep1.1.el4 Red Hat JBoss Enterprise Application Platform 4.2.0 for RHEL 4 ES jbossweb 2.0.0-6.CP14.0jpp.ep1.1.el4 Red Hat JBoss Enterprise Application Platform 4.2.0 for RHEL 5 Server jbossweb 2.0.0-6.CP14.0jpp.ep1.1.el5 Red Hat JBoss Enterprise Application Platform 4.3.0 for RHEL 4 AS jbossweb 2.0.0-6.CP14.0jpp.ep1.1.el4 Red Hat JBoss Enterprise Application Platform 4.3.0 for RHEL 4 ES jbossweb 2.0.0-6.CP14.0jpp.ep1.1.el4 Red Hat JBoss Enterprise Application Platform 4.3.0 for RHEL 5 Server jbossweb 2.0.0-6.CP14.0jpp.ep1.1.el5
    fixed: vendor fix RHSA-2010:0584
  • Red Hat JBoss Enterprise Web Server 1 for RHEL 5 Server tomcat6 6.0.24-7.patch_01.jdk6.ep5.el5, tomcat5 5.5.28-9.patch_01.1.jdk6.ep5.el5, tomcat6-lib 6.0.24-7.patch_01.jdk6.ep5.el5, tomcat6-log4j 6.0.24-7.patch_01.jdk6.ep5.el5, tomcat6-javadoc 6.0.24-7.patch_01.jdk6.ep5.el5, tomcat6-webapps 6.0.24-7.patch_01.jdk6.ep5.el5, +17 more Red Hat JBoss Web Server 1.0 for RHEL 4 AS tomcat5 5.5.28-9.patch_01.jdk6.ep5.el4, tomcat6 6.0.24-7.patch_01.jdk6.ep5.el4, tomcat6-lib 6.0.24-7.patch_01.jdk6.ep5.el4, tomcat6-log4j 6.0.24-7.patch_01.jdk6.ep5.el4, tomcat5-jasper 5.5.28-9.patch_01.jdk6.ep5.el4, tomcat5-parent 5.5.28-9.patch_01.jdk6.ep5.el4, +17 more Red Hat JBoss Web Server 1.0 for RHEL 4 ES tomcat5 5.5.28-9.patch_01.jdk6.ep5.el4, tomcat6 6.0.24-7.patch_01.jdk6.ep5.el4, tomcat6-lib 6.0.24-7.patch_01.jdk6.ep5.el4, tomcat6-log4j 6.0.24-7.patch_01.jdk6.ep5.el4, tomcat5-jasper 5.5.28-9.patch_01.jdk6.ep5.el4, tomcat5-parent 5.5.28-9.patch_01.jdk6.ep5.el4, +17 more
    fixed: vendor fix RHSA-2010:0581
  • Red Hat Enterprise Linux 6 tomcat6, tomcat6-lib, tomcat6-log4j, tomcat6-javadoc, tomcat6-webapps, tomcat6-el-2.1-api, +4 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (Metasploit auxiliary/dos/http/slowloris)
  2. Published

Exploit prediction

54.78% chance of exploitation in the next 30 days, higher than 99% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

CVSS scores

assigned by version score vector
NVD 2.0 6.4 AV:N/AC:L/Au:N/C:P/I:N/A:P

Affected packages

ecosystem package affected fixed in
maven org.apache.tomcat:tomcat
>=7.0.0, <7.0.2
>=5.5.0, <5.5.30
>=6.0.0, <6.0.28
7.0.2
5.5.30
6.0.28

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.