Bug 1168137

Summary: curl closes connection after HEAD request fails
Product: Red Hat Enterprise Linux 6 Reporter: Filip Krska <fkrska>
Component: curlAssignee: Kamil Dudka <kdudka>
Status: CLOSED ERRATA QA Contact: Stefan Kremen <skremen>
Severity: high Docs Contact:
Priority: urgent    
Version: 6.6CC: kdudka, ovasik, skremen
Target Milestone: rcKeywords: EasyFix, Patch, Reproducer, ZStream
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: curl-7.19.7-42.el6 Doc Type: Bug Fix
Doc Text:
DO NOT DOCUMENT (already out via 6.6.z)
 Story Points: ---
Clone Of:
: 1168503 (view as bug list) Environment:
Last Closed: 2015-07-22 05:44:09 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1168503    
Attachments:
Description Flags
backport of upstream bug 1124 kdudka: review+

Description Filip Krska 2014-11-26 09:13:04 UTC 
Created attachment 961541 [details]
backport of upstream bug 1124

Description of problem:

backport of upstream fix http://sourceforge.net/p/curl/bugs/1124/

When curl fails on HEAD request (e.g. keepalive packet from httpd) it immediately closes connection with

* no chunk, no close, no size. Assume close to signal end

message. This can lead to infinite loops when e.g. NTLM authentication is required (curl -v -I -L -k -s --ntlm -u ACCOUNT:PASSWORD https://URL/nonexistent.html).

Version-Release number of selected component (if applicable):

curl-7.19.7-40.el6_6.1.x86_64


How reproducible:

Always

Steps to Reproduce:

1. setup httpd server with KeepAlive On
2. curl -v --head http://server/nonexistent.html
3. observe output

Actual results:

...
Content-Type: text/html; charset=iso-8859-1
* no chunk, no close, no size. Assume close to signal end

< 
* Closing connection #0


Expected results:

...
Content-Type: text/html; charset=iso-8859-1

< 
* Connection #0 to host localhost left intact
* Closing connection #0


Additional info:

Backport patch attached.
Comment 1 Kamil Dudka 2014-11-26 09:54:56 UTC 
Thanks for the bug report and patch!

upstream commit:
https://github.com/bagder/curl/commit/85ce195f
Comment 5 Kamil Dudka 2014-11-26 14:57:48 UTC 
Comment on attachment 961541 [details]
backport of upstream bug 1124

Looks good to me.
Comment 11 errata-xmlrpc 2015-07-22 05:44:09 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHSA-2015-1254.html