Bug 1771899 (CVE-2019-17502)

Summary:	CVE-2019-17502 hydra: null pointer dereference in process_header_end()
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	athmanem, rebus
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-11-13 12:51:32 UTC	Type:	---
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:	1771900, 1771901
Bug Blocks:

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.