Bug 1880349 (CVE-2020-25219)

Summary:	CVE-2020-25219 libproxy: uncontrolled recursion via an infinite stream response leading to stack exhaustion
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	amigadave, cmoore, danw, i, kaycoth, kwalsh, scorneli
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in libproxy in versions 0.4 through 0.4.15. A remote HTTP server can trigger an uncontrolled recursion via a response composed of an infinite stream that lacks a newline character leading to a stack exhaustion. The highest threat from this vulnerability is to system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:		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:	1880350, 1884638, 1885157, 1885158
Bug Blocks:	1869641

Description Marian Rehak 2020-09-18 10:38:30 UTC

url::recvline in url.cpp in libproxy 0.4.x through 0.4.15 allows a remote HTTP server to trigger uncontrolled recursion via a response composed of an infinite stream that lacks a newline character. This leads to stack exhaustion.

Upstream Reference:

https://github.com/libproxy/libproxy/issues/134

Comment 1 Marian Rehak 2020-09-18 10:38:57 UTC

Created libproxy tracking bugs for this issue:

Affects: fedora-all [bug 1880350]

Comment 2 Stefan Cornelius 2020-09-29 15:33:38 UTC

*** Bug 1883568 has been marked as a duplicate of this bug. ***