7.5
CWE
835
Advisory Published
CVE Published
Advisory Published
Updated

CVE-2018-1336

First published: Mon Jul 23 2018(Updated: )

An improper handing of overflow in the UTF-8 decoder with supplementary characters can lead to an infinite loop in the decoder causing a Denial of Service. Versions Affected: Apache Tomcat 9.0.0.M9 to 9.0.7, 8.5.0 to 8.5.30, 8.0.0.RC1 to 8.0.51, and 7.0.28 to 7.0.86.

Credit: security@apache.org security@apache.org security@apache.org

Affected SoftwareAffected VersionHow to fix
maven/org.apache.tomcat.embed:tomcat-embed-core>=8.0.0RC1<8.0.51
8.0.51
maven/org.apache.tomcat.embed:tomcat-embed-core>=9.0.0.M9<=9.0.7
9.0.8
maven/org.apache.tomcat.embed:tomcat-embed-core>=7.0.28<7.0.87
7.0.87
maven/org.apache.tomcat.embed:tomcat-embed-core>=8.5.0<8.5.31
8.5.31
redhat/tomcat<8.0.52
8.0.52
redhat/tomcat<8.5.31
8.5.31
redhat/tomcat<9.0.8
9.0.8
redhat/tomcat<7.0.88
7.0.88
debian/tomcat9
9.0.43-2~deb11u10
9.0.43-2~deb11u11
9.0.70-2
9.0.95-1
Tomcat>=7.0.28<=7.0.86
Tomcat>=8.0.0<=8.0.51
Tomcat>=8.5.0<=8.5.30
Tomcat>=9.0.1<=9.0.7
Tomcat=8.0.0-rc1
Tomcat=8.0.0-rc10
Tomcat=8.0.0-rc2
Tomcat=8.0.0-rc3
Tomcat=8.0.0-rc4
Tomcat=8.0.0-rc5
Tomcat=8.0.0-rc6
Tomcat=8.0.0-rc7
Tomcat=8.0.0-rc8
Tomcat=8.0.0-rc9
Tomcat=9.0.0-milestone10
Tomcat=9.0.0-milestone11
Tomcat=9.0.0-milestone12
Tomcat=9.0.0-milestone13
Tomcat=9.0.0-milestone14
Tomcat=9.0.0-milestone15
Tomcat=9.0.0-milestone16
Tomcat=9.0.0-milestone17
Tomcat=9.0.0-milestone18
Tomcat=9.0.0-milestone19
Tomcat=9.0.0-milestone20
Tomcat=9.0.0-milestone21
Tomcat=9.0.0-milestone22
Tomcat=9.0.0-milestone23
Tomcat=9.0.0-milestone24
Tomcat=9.0.0-milestone25
Tomcat=9.0.0-milestone26
Tomcat=9.0.0-milestone27
Tomcat=9.0.0-milestone9
JBoss Enterprise Application Platform=6.0.0
JBoss Enterprise Application Platform=6.4.0
Ubuntu=14.04
Ubuntu=16.04
Debian=8.0
Debian=9.0
All of
Red Hat JBoss Enterprise Web Server=3.0.0
Any of
Red Hat Enterprise Linux=6.0
Red Hat Enterprise Linux=7.0
All of
Red Hat JBoss Enterprise Web Server=5.0.0
Any of
Red Hat Enterprise Linux=6.0
Red Hat Enterprise Linux=7.0
Red Hat Enterprise Linux Desktop=7.0
Red Hat Enterprise Linux Server=7.0
Red Hat Enterprise Linux Workstation=7.0
Tomcat=9.0.0-m10
Tomcat=9.0.0-m11
Tomcat=9.0.0-m12
Tomcat=9.0.0-m13
Tomcat=9.0.0-m14
Tomcat=9.0.0-m15
Tomcat=9.0.0-m16
Tomcat=9.0.0-m17
Tomcat=9.0.0-m18
Tomcat=9.0.0-m19
Tomcat=9.0.0-m20
Tomcat=9.0.0-m21
Tomcat=9.0.0-m22
Tomcat=9.0.0-m23
Tomcat=9.0.0-m24
Tomcat=9.0.0-m25
Tomcat=9.0.0-m26
Tomcat=9.0.0-m27
Tomcat=9.0.0-m9
Red Hat JBoss Enterprise Web Server=3.0.0
Red Hat Enterprise Linux=6.0
Red Hat Enterprise Linux=7.0
Red Hat JBoss Enterprise Web Server=5.0.0

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2018-1336?

    CVE-2018-1336 has a high severity rating due to its potential to cause a Denial of Service through an infinite loop in the UTF-8 decoder.

  • How do I fix CVE-2018-1336?

    To address CVE-2018-1336, upgrade to Apache Tomcat version 8.0.52 and later, 8.5.31 and later, 9.0.8 and later, or 7.0.87 and later depending on your current version.

  • Which versions of Apache Tomcat are affected by CVE-2018-1336?

    CVE-2018-1336 affects Apache Tomcat versions 9.0.0.M9 to 9.0.7, 8.5.0 to 8.5.30, 8.0.0.RC1 to 8.0.51, and 7.0.28 to 7.0.86.

  • Can CVE-2018-1336 be exploited remotely?

    Yes, CVE-2018-1336 can be exploited remotely to trigger a Denial of Service condition.

  • What applications are impacted by CVE-2018-1336?

    CVE-2018-1336 impacts applications running on affected versions of Apache Tomcat when processing UTF-8 encoded data.

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