Security Advisory Important: mod_jk security update

Advisory: RHSA-2009:1087-1
Type: Security Advisory
Severity: Important
Issued on: 2009-06-09
Last updated on: 2009-06-09
Affected Products: Application Server v2 EL4
CVEs ( CVE-2008-5519


Updated mod_jk packages that fix one security issue are now available for
Red Hat Application Server v2.

This update has been rated as having important security impact by the Red
Hat Security Response Team.

mod_jk is an Apache Tomcat connector that allows Apache Tomcat and the
Apache HTTP Server to communicate with each other.

An information disclosure flaw was found in mod_jk. In certain situations,
if a faulty client set the "Content-Length" header without providing data,
or if a user sent repeated requests very quickly, one user may view a
response intended for another user. (CVE-2008-5519)

All mod_jk users are advised to upgrade to these updated packages. They
provide mod_jk 1.2.28, which is not vulnerable to this issue.


Before applying this update, make sure that all previously-released
errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at

Updated packages

Application Server v2 EL4

mod_jk-1.2.28-1jpp_3rh.src.rpm     MD5: db1ca6f87625c009849d4b93d1c67ca3
mod_jk-ap20-1.2.28-1jpp_3rh.i386.rpm     MD5: e2f647bbb4a3a33f9b71c3c9d5a2fe23
mod_jk-manual-1.2.28-1jpp_3rh.i386.rpm     MD5: 0655502912169c244eb15bd267faab6b
mod_jk-ap20-1.2.28-1jpp_3rh.ia64.rpm     MD5: 945bc59076e3f0f8583d97cf551f394e
mod_jk-manual-1.2.28-1jpp_3rh.ia64.rpm     MD5: ad5804e947388876bcbd778baf5a0d7a
mod_jk-ap20-1.2.28-1jpp_3rh.ppc.rpm     MD5: 456653c2aeae7c63a913b4edb65f5888
mod_jk-manual-1.2.28-1jpp_3rh.ppc.rpm     MD5: 0623a49a6f8a53038bff760f57f4c793
mod_jk-ap20-1.2.28-1jpp_3rh.x86_64.rpm     MD5: 0aafc79e9d1b1b65b0ae021504984de0
mod_jk-manual-1.2.28-1jpp_3rh.x86_64.rpm     MD5: 7a6297a41fd76b7ee8ce84093fe96067
(The unlinked packages above are only available from the Red Hat Network)

Bugs fixed (see bugzilla for more information)

490201 - CVE-2008-5519 mod_jk: session information leak


These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from:

The Red Hat security contact is More contact details at