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Bug 126864 - CAN-2004-0493 folding header DoS
CAN-2004-0493 folding header DoS
Product: Fedora
Classification: Fedora
Component: httpd (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Joe Orton
: Security
Depends On:
  Show dependency treegraph
Reported: 2004-06-28 11:21 EDT by Mark J. Cox
Modified: 2007-11-30 17:10 EST (History)
2 users (show)

See Also:
Fixed In Version: 2.0.50-2.1
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2004-07-20 05:16:16 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Mark J. Cox 2004-06-28 11:21:32 EDT
Apache 2.0.49 places no limit on the amount of folding of input
headers, or in the total length after folding.  With an input stream
with infinite headers to be folded, the server will allocate as much
memory as the system will allow, possibly leading to a denial of

Public by Georgi Guninski to full-disclosure list Jun28

CAN-2004-0493 Affects: FC1
CAN-2004-0493 Affects: FC2
Comment 1 Robert Scheck 2004-06-29 16:54:26 EDT
The Apache team provides a patch solving this vulnerability:


This patch applies and works for me with httpd-2.0.49 fine, here.
Comment 2 Joe Orton 2004-07-20 05:16:16 EDT
Fixed by http://fedoranews.org/updates/FEDORA-2004-204.shtml.

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