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Apache Connection Denial of Service Vulnerability
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Secunia Advisory:
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SA11170
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Release Date:
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2004-03-20
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Last Update:
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2004-05-10
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Critical:
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Moderately critical
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Impact:
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DoS
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Apache 1.3.x
Apache 2.0.x
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| | CVE reference: | CVE-2004-0174 (Secunia mirror)
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Description:
The vendor has reported a vulnerability in Apache, which can be exploited by malicious people to cause a Denial of Service.
The problem is that when using multiple listening sockets, a short lived connection on a rarely used socket causes the child process to hold the accept mutex, thereby preventing new connections from being served until another connection uses the socket.
This has been reported to affect Apache 2.0.48 and prior and Apache 1.3.29 and prior on some versions of AIX, Solaris, and Tru64.
Linux, FreeBSD, and Windows are not affected.
Do you have this product installed on your home computer? Scan using the free Personal Software Inspector. Check if a vulnerable version is installed on computers in your corporate network, scan using the Network Software Inspector.
Solution:
The vulnerability has been fixed in versions 2.0.49 and 1.3.31-dev:
http://httpd.apache.org/download.cgi
NOTE: Two older issues have also be fixed in version 2.0.49.
SA11092
SA8146
Provided and/or discovered by:
Reported by the vendor.
Changelog:
2004-03-25: Added link to US-CERT vulnerability note.
2004-05-10: Added 1.3.x branch as affected.
Original Advisory:
http://www.apache.org/dist/httpd/Announcement2.html
Other References:
SA11092:
http://secunia.com/advisories/11092/
SA8146:
http://secunia.com/advisories/8146/
US-CERT VU#132110:
http://www.kb.cert.org/vuls/id/132110
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
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