rhsa-2011_1391
Vulnerability from csaf_redhat
Published
2011-10-20 16:48
Modified
2024-11-05 17:37
Summary
Red Hat Security Advisory: httpd security and bug fix update
Notes
Topic
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.
Details
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.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Moderate" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "summary", "text": "Updated httpd packages that fix two security issues and one bug are now\navailable for Red Hat Enterprise Linux 6.\n\nThe Red Hat Security Response Team has rated this update as having moderate\nsecurity impact. Common Vulnerability Scoring System (CVSS) base scores,\nwhich give detailed severity ratings, are available for each vulnerability\nfrom the CVE links in the References section.", "title": "Topic" }, { "category": "general", "text": "The Apache HTTP Server is a popular web server.\n\nIt was discovered that the Apache HTTP Server did not properly validate the\nrequest URI for proxied requests. In certain configurations, if a reverse\nproxy used the ProxyPassMatch directive, or if it used the RewriteRule\ndirective with the proxy flag, a remote attacker could make the proxy\nconnect to an arbitrary server, possibly disclosing sensitive information\nfrom internal web servers not directly accessible to the attacker.\n(CVE-2011-3368)\n\nIt was discovered that mod_proxy_ajp incorrectly returned an \"Internal\nServer Error\" response when processing certain malformed HTTP requests,\nwhich caused the back-end server to be marked as failed in configurations\nwhere mod_proxy was used in load balancer mode. A remote attacker could\ncause mod_proxy to not send requests to back-end AJP (Apache JServ\nProtocol) servers for the retry timeout period or until all back-end\nservers were marked as failed. (CVE-2011-3348)\n\nRed Hat would like to thank Context Information Security for reporting the\nCVE-2011-3368 issue.\n\nThis update also fixes the following bug:\n\n* The fix for CVE-2011-3192 provided by the RHSA-2011:1245 update\nintroduced regressions in the way httpd handled certain Range HTTP header\nvalues. This update corrects those regressions. (BZ#736592)\n\nAll httpd users should upgrade to these updated packages, which contain\nbackported patches to correct these issues. After installing the updated\npackages, the httpd daemon must be restarted for the update to take effect.", "title": "Details" }, { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "https://access.redhat.com/errata/RHSA-2011:1391", "url": "https://access.redhat.com/errata/RHSA-2011:1391" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#moderate", "url": "https://access.redhat.com/security/updates/classification/#moderate" }, { "category": "external", "summary": "https://rhn.redhat.com/errata/RHSA-2011-1245.html", "url": "https://rhn.redhat.com/errata/RHSA-2011-1245.html" }, { "category": "external", "summary": "736592", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=736592" }, { "category": "external", "summary": "736690", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=736690" }, { "category": "external", "summary": "740045", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=740045" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2011/rhsa-2011_1391.json" } ], "title": "Red Hat Security Advisory: httpd security and bug fix update", "tracking": { "current_release_date": "2024-11-05T17:37:12+00:00", "generator": { "date": "2024-11-05T17:37:12+00:00", "engine": { "name": "Red Hat SDEngine", "version": "4.1.1" } }, "id": "RHSA-2011:1391", "initial_release_date": "2011-10-20T16:48:00+00:00", "revision_history": [ { "date": "2011-10-20T16:48:00+00:00", "number": "1", "summary": "Initial version" }, { "date": "2011-10-20T12:56:54+00:00", "number": "2", "summary": "Last updated 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"Statement" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.i686", "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.ppc64", "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.s390x", "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.src", "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.x86_64", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.i686", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.ppc", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.ppc64", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.s390", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.s390x", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.x86_64", "6Server-6.1.z:httpd-devel-0:2.2.15-9.el6_1.3.i686", 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"category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2011-3348", "url": "https://www.cve.org/CVERecord?id=CVE-2011-3348" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2011-3348", "url": "https://nvd.nist.gov/vuln/detail/CVE-2011-3348" }, { "category": "external", "summary": "http://httpd.apache.org/security/vulnerabilities_22.html#2.2.21", "url": "http://httpd.apache.org/security/vulnerabilities_22.html#2.2.21" } ], "release_date": "2011-09-14T00:00:00+00:00", "remediations": [ { "category": "vendor_fix", "date": "2011-10-20T16:48:00+00:00", "details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/kb/docs/DOC-11259", "product_ids": [ "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.i686", "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.ppc64", "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.s390x", "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.src", "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.x86_64", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.i686", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.ppc", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.ppc64", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.s390", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.s390x", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.x86_64", "6Server-6.1.z:httpd-devel-0:2.2.15-9.el6_1.3.i686", "6Server-6.1.z:httpd-devel-0:2.2.15-9.el6_1.3.ppc", "6Server-6.1.z:httpd-devel-0:2.2.15-9.el6_1.3.ppc64", "6Server-6.1.z:httpd-devel-0:2.2.15-9.el6_1.3.s390", "6Server-6.1.z:httpd-devel-0:2.2.15-9.el6_1.3.s390x", 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proxy, which allows remote attackers to send requests to intranet servers via a malformed URI containing an initial @ (at sign) character.", "title": "Vulnerability description" }, { "category": "summary", "text": "httpd: reverse web proxy vulnerability", "title": "Vulnerability summary" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" } ], "product_status": { "fixed": [ "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.i686", "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.ppc64", "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.s390x", "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.src", "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.x86_64", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.i686", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.ppc", 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"6Server-6.1.z:mod_ssl-1:2.2.15-9.el6_1.3.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2011-3368" }, { "category": "external", "summary": "RHBZ#740045", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=740045" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2011-3368", "url": "https://www.cve.org/CVERecord?id=CVE-2011-3368" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2011-3368", "url": "https://nvd.nist.gov/vuln/detail/CVE-2011-3368" }, { "category": "external", "summary": "http://www.contextis.com/research/blog/reverseproxybypass/", "url": "http://www.contextis.com/research/blog/reverseproxybypass/" } ], "release_date": "2011-10-05T00:00:00+00:00", "remediations": [ { "category": "vendor_fix", "date": "2011-10-20T16:48:00+00:00", "details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/kb/docs/DOC-11259", "product_ids": [ "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.i686", "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.ppc64", "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.s390x", "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.src", "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.x86_64", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.i686", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.ppc", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.ppc64", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.s390", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.s390x", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.x86_64", "6Server-6.1.z:httpd-devel-0:2.2.15-9.el6_1.3.i686", "6Server-6.1.z:httpd-devel-0:2.2.15-9.el6_1.3.ppc", "6Server-6.1.z:httpd-devel-0:2.2.15-9.el6_1.3.ppc64", "6Server-6.1.z:httpd-devel-0:2.2.15-9.el6_1.3.s390", "6Server-6.1.z:httpd-devel-0:2.2.15-9.el6_1.3.s390x", "6Server-6.1.z:httpd-devel-0:2.2.15-9.el6_1.3.x86_64", "6Server-6.1.z:httpd-manual-0:2.2.15-9.el6_1.3.noarch", "6Server-6.1.z:httpd-tools-0:2.2.15-9.el6_1.3.i686", "6Server-6.1.z:httpd-tools-0:2.2.15-9.el6_1.3.ppc64", "6Server-6.1.z:httpd-tools-0:2.2.15-9.el6_1.3.s390x", "6Server-6.1.z:httpd-tools-0:2.2.15-9.el6_1.3.x86_64", "6Server-6.1.z:mod_ssl-1:2.2.15-9.el6_1.3.i686", "6Server-6.1.z:mod_ssl-1:2.2.15-9.el6_1.3.ppc64", "6Server-6.1.z:mod_ssl-1:2.2.15-9.el6_1.3.s390x", "6Server-6.1.z:mod_ssl-1:2.2.15-9.el6_1.3.x86_64" ], "restart_required": { "category": "none" }, "url": "https://access.redhat.com/errata/RHSA-2011:1391" } ], "scores": [ { "cvss_v2": { "accessComplexity": "HIGH", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 2.6, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:H/Au:N/C:N/I:P/A:N", "version": "2.0" }, "products": [ "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.i686", "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.ppc64", "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.s390x", "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.src", "6Server-6.1.z:httpd-0:2.2.15-9.el6_1.3.x86_64", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.i686", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.ppc", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.ppc64", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.s390", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.s390x", "6Server-6.1.z:httpd-debuginfo-0:2.2.15-9.el6_1.3.x86_64", "6Server-6.1.z:httpd-devel-0:2.2.15-9.el6_1.3.i686", "6Server-6.1.z:httpd-devel-0:2.2.15-9.el6_1.3.ppc", "6Server-6.1.z:httpd-devel-0:2.2.15-9.el6_1.3.ppc64", "6Server-6.1.z:httpd-devel-0:2.2.15-9.el6_1.3.s390", "6Server-6.1.z:httpd-devel-0:2.2.15-9.el6_1.3.s390x", "6Server-6.1.z:httpd-devel-0:2.2.15-9.el6_1.3.x86_64", "6Server-6.1.z:httpd-manual-0:2.2.15-9.el6_1.3.noarch", "6Server-6.1.z:httpd-tools-0:2.2.15-9.el6_1.3.i686", "6Server-6.1.z:httpd-tools-0:2.2.15-9.el6_1.3.ppc64", "6Server-6.1.z:httpd-tools-0:2.2.15-9.el6_1.3.s390x", "6Server-6.1.z:httpd-tools-0:2.2.15-9.el6_1.3.x86_64", "6Server-6.1.z:mod_ssl-1:2.2.15-9.el6_1.3.i686", "6Server-6.1.z:mod_ssl-1:2.2.15-9.el6_1.3.ppc64", "6Server-6.1.z:mod_ssl-1:2.2.15-9.el6_1.3.s390x", "6Server-6.1.z:mod_ssl-1:2.2.15-9.el6_1.3.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Moderate" } ], "title": "httpd: reverse web proxy vulnerability" } ] }
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.