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Red Hat: RHSA-2011:1392-01 Moderate: httpd Proxy Exploit Risk

red hat
Calendar Grey October 20, 2011
Dist Redhat Esm H88
A recent patch for httpd components resolves a critical vulnerability and an error in Red Hat Enterprise Linux versions 4 and 5. Users are advised to upgrade promptly.
Updated httpd packages that fix one security issue and one bug are now available for Red Hat Enterprise Linux 4 and 5

Solution

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

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259

Summary

The Apache HTTP Server is a popular web server.
It was discovered that the Apache HTTP Server did not properly validate the request URI for proxied requests. In certain configurations, if a reverse proxy used the ProxyPassMatch directive, or if it used the RewriteRule directive with the proxy flag, a remote attacker could make the proxy connect to an arbitrary server, possibly disclosing sensitive information from internal web servers not directly accessible to the attacker. (CVE-2011-3368)
Red Hat would like to thank Context Information Security for reporting this issue.
This update also fixes the following bug:
* The fix for CVE-2011-3192 provided by the RHSA-2011:1245 update introduced regressions in the way httpd handled certain Range HTTP header values. This update corrects those regressions. (BZ#736593, BZ#736594)
All httpd users should upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, the httpd daemon must be restarted for the update to take effect.

Topics%20covered

Topics Covered

security advisory moderate Red Hat update bug fix exploit httpd

References

https://access.redhat.com/security/cve/CVE-2011-3368 https://access.redhat.com/security/updates/classification#moderate https://access.redhat.com/errata/RHSA-2011:1245.html

Package List

Red Hat Enterprise Linux AS version 4:
Source:
i386: httpd-2.0.52-49.ent.i386.rpm httpd-debuginfo-2.0.52-49.ent.i386.rpm httpd-devel-2.0.52-49.ent.i386.rpm httpd-manual-2.0.52-49.ent.i386.rpm httpd-suexec-2.0.52-49.ent.i386.rpm mod_ssl-2.0.52-49.ent.i386.rpm
ia64: httpd-2.0.52-49.ent.ia64.rpm httpd-debuginfo-2.0.52-49.ent.ia64.rpm httpd-devel-2.0.52-49.ent.ia64.rpm httpd-manual-2.0.52-49.ent.ia64.rpm httpd-suexec-2.0.52-49.ent.ia64.rpm mod_ssl-2.0.52-49.ent.ia64.rpm
ppc: httpd-2.0.52-49.ent.ppc.rpm httpd-debuginfo-2.0.52-49.ent.ppc.rpm httpd-devel-2.0.52-49.ent.ppc.rpm httpd-manual-2.0.52-49.ent.ppc.rpm httpd-suexec-2.0.52-49.ent.ppc.rpm mod_ssl-2.0.52-49.ent.ppc.rpm
s390: httpd-2.0.52-49.ent.s390.rpm httpd-debuginfo-2.0.52-49.ent.s390.rpm httpd-devel-2.0.52-49.ent.s390.rpm httpd-manual-2.0.52-49.ent.s390.rpm httpd-suexec-2.0.52-49.ent.s390.rpm mod_ssl-2.0.52-49.ent.s390.rpm
s390x: httpd-2.0.52-49.ent.s390x.rpm httpd-debuginfo-2.0.52-49.ent.s390x.rpm httpd-devel-2.0.52-49.ent.s390x.rpm httpd-manual-2.0.52-49.ent.s390x.rpm httpd-suexec-2.0.52-49.ent.s390x.rpm mod_ssl-2.0.52-49.ent.s390x.rpm
x86_64: httpd-2.0.52-49.ent.x86_64.rpm httpd-debuginfo-2.0.52-49.ent.x86_64.rpm httpd-devel-2.0.52-49.ent.x86_64.rpm httpd-manual-2.0.52-49.ent.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2011:1392-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2011:1392.html
Issue date: 2011-10-20

Topic

Updated httpd packages that fix one security issue and one bug are nowavailable for Red Hat Enterprise Linux 4 and 5.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.

Topics%20covered

Topics Covered

security advisory moderate Red Hat update bug fix exploit httpd

Relevant Releases Architectures

RHEL Desktop Workstation (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux Desktop version 4 - i386, x86_64

Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64

Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

Bugs Fixed

736593 - httpd: RHSA-2011:1245 regressions [rhel-5]

736594 - httpd: RHSA-2011:1245 regressions [rhel-4]

740045 - CVE-2011-3368 httpd: reverse web proxy vulnerability

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