Bug 1462216 (CVE-2017-7376)

Summary:	CVE-2017-7376 libxml2: Incorrect limit used for port values
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	athmanem, bmcclain, c.david86, cfergeau, csutherl, dblechte, dking, dmoppert, eedri, erik-fedora, fedora-mingw, gzaronik, jclere, ktietz, lgao, lsurette, mbabacek, mgoldboi, michal.skrivanek, mturk, myarboro, ohudlick, rbalakri, rh-spice-bugs, rjones, sardella, sherold, srevivo, twalsh, veillard, weli, ykaul, ylavi
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	libxml2 2.9.5	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-08-30 05:21:35 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:	1462226, 1462227, 1462228, 1525811
Bug Blocks:	1462234

Description Adam Mariš 2017-06-16 12:36:58 UTC

When calculating port value in xmlParse3986Port function, incorrect limit is used.

Android patch:

https://android.googlesource.com/platform/external/libxml2/+/51e0cb2e5ec18eaf6fb331bc573ff27b743898f4

References:

https://source.android.com/security/bulletin/2017-06-01#libraries

Comment 1 Adam Mariš 2017-06-16 12:49:03 UTC

Created libxml2 tracking bugs for this issue:

Affects: fedora-all [bug 1462226]


Created mingw-libxml2 tracking bugs for this issue:

Affects: epel-7 [bug 1462227]
Affects: fedora-all [bug 1462228]

Comment 3 Doran Moppert 2017-08-30 05:21:35 UTC

The port filtering functionality was introduced in 2.9.4

Comment 9 Doran Moppert 2019-04-03 02:36:42 UTC

Upstream fixed this slightly differently than different commit than Android did:

https://github.com/GNOME/libxml2/commit/5dca9eea1bd4