U radu programskog paketa httpd, distribuiranog s operacijskim sustavom Red Hat Enterprise Linux 6, uočena su tri nova sigurnosna propusta. Udaljeni napadač ih može iskoristiti za napad uskraćivanjem usluga, zaobilaženje ograničenja i dobivanje većih ovlasti u sustavu.
Paket:
HTTPD 2.x
Operacijski sustavi:
Red Hat Enterprise Linux 6
Kritičnost:
7
Problem:
pogreška u programskoj komponenti
Iskorištavanje:
udaljeno
Posljedica:
dobivanje većih privilegija, uskraćivanje usluga (DoS), zaobilaženje postavljenih ograničenja
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2011-3348, CVE-2011-3368, CVE-2011-3192
Izvorni ID preporuke:
RHSA-2011:1391-01
Izvor:
Red Hat
Problem:
Sigurnosne ranjivosti se javljaju zbog pogrešaka u programskim komponentama "mod_proxy", "mod_proxy_ajp" te "byterange filter".
Posljedica:
Udaljeni napadač navedene ranjivosti može iskoristiti za zaobilaženje ograničenja, dobivanje većih privilegija te DoS (eng. Denial of Service) napad.
Rješenje:
Korisnike se upućuje na instalaciju izdanih programskih rješenja.
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=====================================================================
Red Hat Security Advisory
Synopsis: Moderate: httpd security and bug fix update
Advisory ID: RHSA-2011:1391-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-1391.html
Issue date: 2011-10-20
CVE Names: CVE-2011-3348 CVE-2011-3368
=====================================================================
1. Summary:
Updated httpd packages that fix two security issues and one bug are now
available for Red Hat Enterprise Linux 6.
The Red Hat Security Response Team has rated this update as having moderate
security impact. Common Vulnerability Scoring System (CVSS) base scores,
which give detailed severity ratings, are available for each vulnerability
from the CVE links in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, noarch, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch, x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64
3. Description:
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)
It was discovered that mod_proxy_ajp incorrectly returned an "Internal
Server Error" response when processing certain malformed HTTP requests,
which caused the back-end server to be marked as failed in configurations
where mod_proxy was used in load balancer mode. A remote attacker could
cause mod_proxy to not send requests to back-end AJP (Apache JServ
Protocol) servers for the retry timeout period or until all back-end
servers were marked as failed. (CVE-2011-3348)
Red Hat would like to thank Context Information Security for reporting the
CVE-2011-3368 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#736592)
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.
4. 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
5. Bugs fixed (http://bugzilla.redhat.com/):
736592 - httpd: RHSA-2011:1245 regressions [rhel-6]
736690 - CVE-2011-3348 httpd: mod_proxy_ajp remote temporary DoS
740045 - CVE-2011-3368 httpd: reverse web proxy vulnerability
6. Package List:
Red Hat Enterprise Linux Desktop (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/httpd-2.2.15-9.el6_1.3.src.rpm
i386:
httpd-2.2.15-9.el6_1.3.i686.rpm
httpd-debuginfo-2.2.15-9.el6_1.3.i686.rpm
httpd-tools-2.2.15-9.el6_1.3.i686.rpm
x86_64:
httpd-2.2.15-9.el6_1.3.x86_64.rpm
httpd-debuginfo-2.2.15-9.el6_1.3.x86_64.rpm
httpd-tools-2.2.15-9.el6_1.3.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/httpd-2.2.15-9.el6_1.3.src.rpm
i386:
httpd-debuginfo-2.2.15-9.el6_1.3.i686.rpm
httpd-devel-2.2.15-9.el6_1.3.i686.rpm
mod_ssl-2.2.15-9.el6_1.3.i686.rpm
noarch:
httpd-manual-2.2.15-9.el6_1.3.noarch.rpm
x86_64:
httpd-debuginfo-2.2.15-9.el6_1.3.i686.rpm
httpd-debuginfo-2.2.15-9.el6_1.3.x86_64.rpm
httpd-devel-2.2.15-9.el6_1.3.i686.rpm
httpd-devel-2.2.15-9.el6_1.3.x86_64.rpm
mod_ssl-2.2.15-9.el6_1.3.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/httpd-2.2.15-9.el6_1.3.src.rpm
x86_64:
httpd-2.2.15-9.el6_1.3.x86_64.rpm
httpd-debuginfo-2.2.15-9.el6_1.3.x86_64.rpm
httpd-tools-2.2.15-9.el6_1.3.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/httpd-2.2.15-9.el6_1.3.src.rpm
noarch:
httpd-manual-2.2.15-9.el6_1.3.noarch.rpm
x86_64:
httpd-debuginfo-2.2.15-9.el6_1.3.i686.rpm
httpd-debuginfo-2.2.15-9.el6_1.3.x86_64.rpm
httpd-devel-2.2.15-9.el6_1.3.i686.rpm
httpd-devel-2.2.15-9.el6_1.3.x86_64.rpm
mod_ssl-2.2.15-9.el6_1.3.x86_64.rpm
Red Hat Enterprise Linux Server (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/httpd-2.2.15-9.el6_1.3.src.rpm
i386:
httpd-2.2.15-9.el6_1.3.i686.rpm
httpd-debuginfo-2.2.15-9.el6_1.3.i686.rpm
httpd-devel-2.2.15-9.el6_1.3.i686.rpm
httpd-tools-2.2.15-9.el6_1.3.i686.rpm
mod_ssl-2.2.15-9.el6_1.3.i686.rpm
noarch:
httpd-manual-2.2.15-9.el6_1.3.noarch.rpm
ppc64:
httpd-2.2.15-9.el6_1.3.ppc64.rpm
httpd-debuginfo-2.2.15-9.el6_1.3.ppc.rpm
httpd-debuginfo-2.2.15-9.el6_1.3.ppc64.rpm
httpd-devel-2.2.15-9.el6_1.3.ppc.rpm
httpd-devel-2.2.15-9.el6_1.3.ppc64.rpm
httpd-tools-2.2.15-9.el6_1.3.ppc64.rpm
mod_ssl-2.2.15-9.el6_1.3.ppc64.rpm
s390x:
httpd-2.2.15-9.el6_1.3.s390x.rpm
httpd-debuginfo-2.2.15-9.el6_1.3.s390.rpm
httpd-debuginfo-2.2.15-9.el6_1.3.s390x.rpm
httpd-devel-2.2.15-9.el6_1.3.s390.rpm
httpd-devel-2.2.15-9.el6_1.3.s390x.rpm
httpd-tools-2.2.15-9.el6_1.3.s390x.rpm
mod_ssl-2.2.15-9.el6_1.3.s390x.rpm
x86_64:
httpd-2.2.15-9.el6_1.3.x86_64.rpm
httpd-debuginfo-2.2.15-9.el6_1.3.i686.rpm
httpd-debuginfo-2.2.15-9.el6_1.3.x86_64.rpm
httpd-devel-2.2.15-9.el6_1.3.i686.rpm
httpd-devel-2.2.15-9.el6_1.3.x86_64.rpm
httpd-tools-2.2.15-9.el6_1.3.x86_64.rpm
mod_ssl-2.2.15-9.el6_1.3.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 6):
Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/httpd-2.2.15-9.el6_1.3.src.rpm
i386:
httpd-2.2.15-9.el6_1.3.i686.rpm
httpd-debuginfo-2.2.15-9.el6_1.3.i686.rpm
httpd-devel-2.2.15-9.el6_1.3.i686.rpm
httpd-tools-2.2.15-9.el6_1.3.i686.rpm
mod_ssl-2.2.15-9.el6_1.3.i686.rpm
noarch:
httpd-manual-2.2.15-9.el6_1.3.noarch.rpm
x86_64:
httpd-2.2.15-9.el6_1.3.x86_64.rpm
httpd-debuginfo-2.2.15-9.el6_1.3.i686.rpm
httpd-debuginfo-2.2.15-9.el6_1.3.x86_64.rpm
httpd-devel-2.2.15-9.el6_1.3.i686.rpm
httpd-devel-2.2.15-9.el6_1.3.x86_64.rpm
httpd-tools-2.2.15-9.el6_1.3.x86_64.rpm
mod_ssl-2.2.15-9.el6_1.3.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package
7. References:
https://www.redhat.com/security/data/cve/CVE-2011-3348.html
https://www.redhat.com/security/data/cve/CVE-2011-3368.html
https://access.redhat.com/security/updates/classification/#moderate
https://rhn.redhat.com/errata/RHSA-2011-1245.html
8. Contact:
The Red Hat security contact is <Ova e-mail adresa je zaštićena od spambota. Potrebno je omogućiti JavaScript da je vidite.>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2011 Red Hat, Inc.
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