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Fencer Intel
medium 4.3

CVE-2014-0099 json

Improper Neutralization of CRLF Sequences in HTTP Headers in Apache Tomcat

published 2014-05-31 12 y ago modified 2026-10-14 26 d ago also GHSA-xh5x-j8jf-pcpx , EUVD-2022-5792

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
8.8%
EPSS 8.8% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

Integer overflow in java/org/apache/tomcat/util/buf/Ascii.java in Apache Tomcat before 6.0.40, 7.x before 7.0.53, and 8.x before 8.0.4, when operated behind a reverse proxy, allows remote attackers to conduct HTTP request smuggling attacks via a crafted Content-Length HTTP header.

Patch / fix

  • maven org.apache.tomcat:tomcat 6.0.40, 7.0.54, 8.0.6
  • maven org.apache.tomcat:tomcat-util 6.0.40, 7.0.54, 8.0.6
  • tomcat6 Ubuntu 14.04 LTS 6.0.39-1ubuntu0.1
  • tomcat7 Ubuntu 14.04 LTS 7.0.52-1ubuntu0.1

ubuntu advisories UBUNTU-CVE-2014-0099

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • jbossweb jboss enterprise application platform 6 7.3.2-4.Final_redhat_3.1.ep6.el5
  • jbossweb jboss enterprise application platform 6 7.3.2-4.Final_redhat_3.1.ep6.el6
  • tomcat RHEL 7 7.0.42-6.el7_0
  • tomcat-lib RHEL 7 7.0.42-6.el7_0
  • tomcat-jsvc RHEL 7 7.0.42-6.el7_0
  • tomcat-javadoc RHEL 7 7.0.42-6.el7_0
  • tomcat-webapps RHEL 7 7.0.42-6.el7_0
  • tomcat-el-2.2-api RHEL 7 7.0.42-6.el7_0

red hat advisories RHSA-2014:0843RHSA-2014:0827RHSA-2014:0835RHSA-2014:0834RHSA-2014:0865

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-2014-0099 updated cvss 5.8

Tomcat/JBossWeb: Request smuggling via malicious content length header

  • Red Hat Enterprise Linux 5 tomcat5 Red Hat JBoss Enterprise Application Platform 5 jbossweb jbossweb Red Hat JBoss Enterprise Web Server 1 tomcat6, tomcat5 tomcat5
    affected: no fix planned “Will not fix”
  • Red Hat JBoss Operations Network 3 jbossweb jbossweb
    affected: no fix available
  • Red Hat Enterprise Linux Client (v. 7) tomcat 7.0.42-6.el7_0, tomcat-servlet-3.0-api 7.0.42-6.el7_0 Red Hat Enterprise Linux Client Optional (v. 7) tomcat 7.0.42-6.el7_0, tomcat-lib 7.0.42-6.el7_0, tomcat-jsvc 7.0.42-6.el7_0, tomcat-javadoc 7.0.42-6.el7_0, tomcat-webapps 7.0.42-6.el7_0, tomcat-el-2.2-api 7.0.42-6.el7_0, +3 more Red Hat Enterprise Linux ComputeNode (v. 7) tomcat 7.0.42-6.el7_0, tomcat-servlet-3.0-api 7.0.42-6.el7_0 Red Hat Enterprise Linux ComputeNode Optional (v. 7) tomcat 7.0.42-6.el7_0, tomcat-lib 7.0.42-6.el7_0, tomcat-jsvc 7.0.42-6.el7_0, tomcat-javadoc 7.0.42-6.el7_0, tomcat-webapps 7.0.42-6.el7_0, tomcat-el-2.2-api 7.0.42-6.el7_0, +3 more
    fixed: vendor fix RHSA-2014:0827
  • Red Hat Enterprise Linux Desktop Optional (v. 6) tomcat6 6.0.24-72.el6_5, tomcat6-lib 6.0.24-72.el6_5, tomcat6-javadoc 6.0.24-72.el6_5, tomcat6-webapps 6.0.24-72.el6_5, tomcat6-el-2.1-api 6.0.24-72.el6_5, tomcat6-docs-webapp 6.0.24-72.el6_5, +3 more Red Hat Enterprise Linux HPC Node Optional (v. 6) tomcat6 6.0.24-72.el6_5, tomcat6-lib 6.0.24-72.el6_5, tomcat6-javadoc 6.0.24-72.el6_5, tomcat6-webapps 6.0.24-72.el6_5, tomcat6-el-2.1-api 6.0.24-72.el6_5, tomcat6-docs-webapp 6.0.24-72.el6_5, +3 more Red Hat Enterprise Linux Server (v. 6) tomcat6 6.0.24-72.el6_5, tomcat6-lib 6.0.24-72.el6_5, tomcat6-el-2.1-api 6.0.24-72.el6_5, tomcat6-jsp-2.1-api 6.0.24-72.el6_5, tomcat6-servlet-2.5-api 6.0.24-72.el6_5
    fixed: vendor fix RHSA-2014:0865
  • Red Hat Enterprise Linux Server (v. 7) tomcat 7.0.42-6.el7_0, tomcat-lib 7.0.42-6.el7_0, tomcat-webapps 7.0.42-6.el7_0, tomcat-el-2.2-api 7.0.42-6.el7_0, tomcat-jsp-2.2-api 7.0.42-6.el7_0, tomcat-admin-webapps 7.0.42-6.el7_0, +1 more
    fixed: vendor fix RHSA-2014:0827
  • Red Hat Enterprise Linux Server Optional (v. 6) tomcat6 6.0.24-72.el6_5, tomcat6-javadoc 6.0.24-72.el6_5, tomcat6-webapps 6.0.24-72.el6_5, tomcat6-docs-webapp 6.0.24-72.el6_5, tomcat6-admin-webapps 6.0.24-72.el6_5
    fixed: vendor fix RHSA-2014:0865
  • Red Hat Enterprise Linux Server Optional (v. 7) tomcat 7.0.42-6.el7_0, tomcat-lib 7.0.42-6.el7_0, tomcat-jsvc 7.0.42-6.el7_0, tomcat-javadoc 7.0.42-6.el7_0, tomcat-webapps 7.0.42-6.el7_0, tomcat-el-2.2-api 7.0.42-6.el7_0, +3 more
    fixed: vendor fix RHSA-2014:0827
  • Red Hat Enterprise Linux Workstation (v. 6) tomcat6 6.0.24-72.el6_5, tomcat6-lib 6.0.24-72.el6_5, tomcat6-el-2.1-api 6.0.24-72.el6_5, tomcat6-jsp-2.1-api 6.0.24-72.el6_5, tomcat6-servlet-2.5-api 6.0.24-72.el6_5
    fixed: vendor fix RHSA-2014:0865
show 15 more
  • Red Hat Enterprise Linux Workstation (v. 7) tomcat 7.0.42-6.el7_0, tomcat-lib 7.0.42-6.el7_0, tomcat-webapps 7.0.42-6.el7_0, tomcat-el-2.2-api 7.0.42-6.el7_0, tomcat-jsp-2.2-api 7.0.42-6.el7_0, tomcat-admin-webapps 7.0.42-6.el7_0, +1 more
    fixed: vendor fix RHSA-2014:0827
  • Red Hat Enterprise Linux Workstation Optional (v. 6) tomcat6 6.0.24-72.el6_5, tomcat6-javadoc 6.0.24-72.el6_5, tomcat6-webapps 6.0.24-72.el6_5, tomcat6-docs-webapp 6.0.24-72.el6_5, tomcat6-admin-webapps 6.0.24-72.el6_5
    fixed: vendor fix RHSA-2014:0865
  • Red Hat Enterprise Linux Workstation Optional (v. 7) tomcat-jsvc 7.0.42-6.el7_0, tomcat-javadoc 7.0.42-6.el7_0, tomcat-docs-webapp 7.0.42-6.el7_0
    fixed: vendor fix RHSA-2014:0827
  • Red Hat JBoss BPMS 6.0
    fixed: vendor fix RHSA-2015:0234
  • Red Hat JBoss BRMS 6.0
    fixed: vendor fix RHSA-2015:0235
  • Red Hat JBoss Data Grid 6.3
    fixed: vendor fix RHSA-2014:0895
  • Red Hat JBoss Data Virtualization 6.0
    fixed: vendor fix RHSA-2015:0765
  • Red Hat JBoss Data Virtualization 6.1
    fixed: vendor fix RHSA-2015:0675
  • Red Hat JBoss Enterprise Application Platform 6.2
    fixed: vendor fix RHSA-2014:0842
  • Red Hat JBoss Enterprise Application Platform 6.2 for RHEL 5 Server jbossweb 7.3.2-4.Final_redhat_3.1.ep6.el5 Red Hat JBoss Enterprise Application Platform 6.2 for RHEL 6 Server jbossweb 7.3.2-4.Final_redhat_3.1.ep6.el6
    fixed: vendor fix RHSA-2014:0843
  • Red Hat JBoss Enterprise Web Server 2 for RHEL 5 Server tomcat6 6.0.37-20_patch_04.ep6.el5, tomcat7 7.0.40-14_patch_03.ep6.el5, tomcat6-lib 6.0.37-20_patch_04.ep6.el5, tomcat7-lib 7.0.40-14_patch_03.ep6.el5, tomcat6-log4j 6.0.37-20_patch_04.ep6.el5, tomcat7-log4j 7.0.40-14_patch_03.ep6.el5, +14 more Red Hat JBoss Enterprise Web Server 2 for RHEL 6 Server tomcat6 6.0.37-29_patch_05.ep6.el6, tomcat7 7.0.40-11_patch_03.ep6.el6, tomcat6-lib 6.0.37-29_patch_05.ep6.el6, tomcat7-lib 7.0.40-11_patch_03.ep6.el6, tomcat6-log4j 6.0.37-29_patch_05.ep6.el6, tomcat7-log4j 7.0.40-11_patch_03.ep6.el6, +14 more
    fixed: vendor fix RHSA-2014:0834
  • Red Hat JBoss Fuse Service Works 6.0
    fixed: vendor fix RHSA-2015:0720
  • Red Hat JBoss Operations Network 3.2
    fixed: vendor fix RHSA-2014:1149
  • Red Hat JBoss Portal 6.2
    fixed: vendor fix RHSA-2015:1009
  • Red Hat JBoss Web Server 2.0
    fixed: vendor fix RHSA-2014:0833

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

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
26 d ago

Exploit prediction

8.84% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected packages

ecosystem package affected fixed in
maven org.apache.tomcat:tomcat
<6.0.40
>=7.0.0, <7.0.54
>=8.0.0, <8.0.6
6.0.40
7.0.54
8.0.6
maven org.apache.tomcat:tomcat-util
<6.0.40
>=7.0.0, <7.0.54
>=8.0.0, <8.0.6
6.0.40
7.0.54
8.0.6

Classification

Weakness
  • CWE-189 Numeric Errors
  • CWE-113 Improper Neutralization of CRLF Sequences in HTTP Headers

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.