Bug 634342 (CVE-2017-15298)

Summary:	dev-vcs/git: denial of service via crafted repository
Product:	Gentoo Security	Reporter:	Aleksandr Wagner (Kivak) <alwag>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	RESOLVED WONTFIX
Severity:	minor	CC:	polynomial-c, robbat2
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:	B3 [upstream cve]
Package list:		Runtime testing required:	---

Description Aleksandr Wagner (Kivak) 2017-10-15 14:55:39 UTC

CVE-2017-15298 (http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15298):

Git through 2.14.2 mishandles layers of tree objects, which allows remote attackers to cause a denial of service (memory consumption) via a crafted repository, aka a Git bomb. This can also have an impact of disk consumption; however, an affected process typically would not survive its attempt to build the data structure in memory before writing to disk. 

References:

https://github.com/Katee/git-bomb
https://kate.io/blog/git-bomb/