rhsa-2012_0542
Vulnerability from csaf_redhat
Published
2012-05-07 18:13
Modified
2024-11-05 17:45
Summary
Red Hat Security Advisory: httpd security and bug fix update
Notes
Topic
Updated httpd packages that fix multiple security issues and one bug are
now available for JBoss Enterprise Web Server 1.0.2 for Red Hat Enterprise
Linux 5 and 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 ("httpd") is the namesake project of The Apache
Software Foundation.
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)
The httpd server included the full HTTP header line in the default error
page generated when receiving an excessively long or malformed header.
Malicious JavaScript running in the server's domain context could use this
flaw to gain access to httpOnly cookies. (CVE-2012-0053)
An integer overflow flaw, leading to a heap-based buffer overflow, was
found in the way httpd performed substitutions in regular expressions. An
attacker able to set certain httpd settings, such as a user permitted to
override the httpd configuration for a specific directory using a
".htaccess" file, could use this flaw to crash the httpd child process or,
possibly, execute arbitrary code with the privileges of the "apache" user.
(CVE-2011-3607)
A NULL pointer dereference flaw was found in the httpd mod_log_config
module. In configurations where cookie logging is enabled, a remote
attacker could use this flaw to crash the httpd child process via an HTTP
request with a malformed Cookie header. (CVE-2012-0021)
A flaw was found in the way httpd handled child process status information.
A malicious program running with httpd child process privileges (such as a
PHP or CGI script) could use this flaw to cause the parent httpd process to
crash during httpd service shutdown. (CVE-2012-0031)
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-2011:1329 update
introduced a regression in the way httpd handled certain Range HTTP header
values. This update corrects this regression. (BZ#749071)
All users of JBoss Enterprise Web Server 1.0.2 should upgrade to these
updated packages, which contain backported patches to correct these issues.
After installing the updated packages, users must restart the httpd
service 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.
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"text": "The Apache HTTP Server (\"httpd\") is the namesake project of The Apache\nSoftware Foundation.\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\nThe httpd server included the full HTTP header line in the default error\npage generated when receiving an excessively long or malformed header.\nMalicious JavaScript running in the server\u0027s domain context could use this\nflaw to gain access to httpOnly cookies. (CVE-2012-0053)\n\nAn integer overflow flaw, leading to a heap-based buffer overflow, was\nfound in the way httpd performed substitutions in regular expressions. An\nattacker able to set certain httpd settings, such as a user permitted to\noverride the httpd configuration for a specific directory using a\n\".htaccess\" file, could use this flaw to crash the httpd child process or,\npossibly, execute arbitrary code with the privileges of the \"apache\" user.\n(CVE-2011-3607)\n\nA NULL pointer dereference flaw was found in the httpd mod_log_config\nmodule. In configurations where cookie logging is enabled, a remote\nattacker could use this flaw to crash the httpd child process via an HTTP\nrequest with a malformed Cookie header. (CVE-2012-0021)\n\nA flaw was found in the way httpd handled child process status information.\nA malicious program running with httpd child process privileges (such as a\nPHP or CGI script) could use this flaw to cause the parent httpd process to\ncrash during httpd service shutdown. (CVE-2012-0031)\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-2011:1329 update\nintroduced a regression in the way httpd handled certain Range HTTP header\nvalues. This update corrects this regression. (BZ#749071)\n\nAll users of JBoss Enterprise Web Server 1.0.2 should upgrade to these\nupdated packages, which contain backported patches to correct these issues.\nAfter installing the updated packages, users must restart the httpd\nservice for the update to take effect.",
"title": "Details"
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{
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{
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},
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"6Server-JBEWS-1:httpd-tools-0:2.2.17-15.4.ep5.el6.i386",
"6Server-JBEWS-1:httpd-tools-0:2.2.17-15.4.ep5.el6.x86_64",
"6Server-JBEWS-1:mod_ssl-1:2.2.17-15.4.ep5.el6.i386",
"6Server-JBEWS-1:mod_ssl-1:2.2.17-15.4.ep5.el6.x86_64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "httpd: cookie exposure due to error responses"
}
]
}
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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.