Bug 1999755 (CVE-2021-40330)

Summary:	CVE-2021-40330 git: unexpected cross-protocol requests via a repository path containing a newline character
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bdettelb, besser82, caswilli, chrisw, fjansen, hhorak, johannes, jorton, juneau, kaycoth, opohorel, psegedy, pstodulk, sebastian.kisela, tmz, vmugicag, yozone
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	git 2.30.1	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in git where it allows a repository path to contain a newline character, which may result in unexpected cross-protocol requests, as demonstrated by the git://localhost:1234/%0d%0a%0d%0aGET%20/%20HTTP/1.1 substring. The highest threat from this vulnerability is to confidentiality.	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:	2010570, 2010571, 2010572, 2017789
Bug Blocks:	1999757

Description Guilherme de Almeida Suckevicz 2021-08-31 17:15:52 UTC

git_connect_git in connect.c in Git before 2.30.1 allows a repository path to contain a newline character, which may result in unexpected cross-protocol requests, as demonstrated by the git://localhost:1234/%0d%0a%0d%0aGET%20/%20HTTP/1.1 substring.

Reference and upstream patch:
https://github.com/git/git/commit/a02ea577174ab8ed18f847cf1693f213e0b9c473