Bug 1771899 (CVE-2019-17502) - CVE-2019-17502 hydra: null pointer dereference in process_header_end()
Summary: CVE-2019-17502 hydra: null pointer dereference in process_header_end()
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2019-17502
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1771900 1771901
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-11-13 08:29 UTC by Dhananjay Arunesh
Modified: 2019-11-13 12:51 UTC (History)
2 users (show)

Fixed In Version:
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Last Closed: 2019-11-13 12:51:32 UTC
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Description Dhananjay Arunesh 2019-11-13 08:29:57 UTC 
Hydra through 0.1.8 has a NULL pointer dereference and daemon crash when processing POST requests that lack a Content-Length header. read.c, request.c, and util.c contribute to this. The process_header_end() function calls boa_atoi(), which ultimately calls atoi() on a NULL pointer.

Reference:
http://hydra.hellug.gr
https://gist.github.com/fxb6476/0b9883a88ff2ca40de46a8469834e16c
Comment 1 Dhananjay Arunesh 2019-11-13 08:30:18 UTC 
Created hydra tracking bugs for this issue:

Affects: epel-all [bug 1771901]
Affects: fedora-all [bug 1771900]
Comment 2 Othman Madjoudj 2019-11-13 12:03:58 UTC 
hydra package included in Fedora/EPEL is the brute-forcing tool which is different from the software affected by this vulnerability.

Upstream: https://github.com/vanhauser-thc/thc-hydra
Comment 3 Product Security DevOps Team 2019-11-13 12:51:32 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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