Bug 1769307 - curl fails while attempting to POST a char device
Summary: curl fails while attempting to POST a char device
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: curl
Version: 7.7
Hardware: All
OS: Linux
Target Milestone: pre-dev-freeze
: 7.8
Assignee: Kamil Dudka
QA Contact: Daniel Rusek
Depends On:
Blocks: 1780029
TreeView+ depends on / blocked
Reported: 2019-11-06 11:07 UTC by Christophe Besson
Modified: 2020-03-31 19:38 UTC (History)
3 users (show)

Fixed In Version: curl-7.29.0-57.el7
Doc Type: Bug Fix
Doc Text:
Cause: The check for uploaded file in libcurl was overly strict. Consequence: libcurl was not able to upload content of char devices. Fix: The check for uploaded file in libcurl has been relaxed. Result: libcurl is now able to upload content of char devices.
Clone Of:
: 1780029 (view as bug list)
Last Closed: 2020-03-31 19:38:40 UTC
Target Upstream Version:

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Github curl/curl/commit/26eaa8383001219e7cd14a153dff95ea9274be6e 0 None None None 2020-06-09 07:13:57 UTC
Red Hat Knowledge Base (Solution) 4558021 0 None None None 2019-11-06 12:11:39 UTC
Red Hat Product Errata RHSA-2020:1020 0 None None None 2020-03-31 19:38:54 UTC

Description Christophe Besson 2019-11-06 11:07:17 UTC
Description of problem:
Between curl 7.19 (RHEL 6) and curl 7.29 (RHEL 7), a patch has been added to prevent a user to POST a directory. This also prevents to POST a char device.

curl: (43) A libcurl function was given a bad argument

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

How reproducible:
curl --form content="@/dev/null" http://form.example.org

Actual results:
curl: (43) A libcurl function was given a bad argument

Expected results:
Should work like on RHEL6, or on RHEL8 (but this part of code has been refactored in this release [7.61]).

Additional info:
An upstream patch which has been merged on the 7.29 version should fixes the issue.


Comment 2 Kamil Dudka 2019-11-06 11:22:59 UTC
Thanks for the link!  This should be safe to backport for RHEL-7.

Comment 3 Christophe Besson 2019-11-06 11:41:52 UTC
Just to confirm I just tried a backport and it works for me.

Comment 15 errata-xmlrpc 2020-03-31 19:38:40 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.


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