Bug 1633022 (CVE-2018-17142)

Summary:	CVE-2018-17142 golang-org-x-net-html: Runtime panic in html.Parse() via crafted html
Product:	[Other] Security Response	Reporter:	Sam Fowler <sfowler>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	admiller, ahardin, apevec, bleanhar, bmontgom, ccoleman, chrisw, dedgar, dustymabe, eparis, extras-orphan, fpokorny, hchiramm, jarrpa, jburrell, jcajka, jchaloup, jgoulding, jjoyce, jmulligan, jokerman, jschluet, kbasil, kramdoss, kumarpraveen.nitdgp, lhh, lpabon, lpeer, madam, markmc, mburns, mchappel, mmagr, nstielau, ramkrsna, rbryant, rhs-bugs, sankarshan, sclewis, sisharma, slinaber, sponnaga, ssaha, storage-qa-internal, tdawson, tdecacqu, thrcka, vbatts, vbellur
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:	2019-06-10 10:38:48 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:	1633023, 1633024, 1633025, 1633026, 1633036, 1633041, 1639104, 1639105
Bug Blocks:	1633033

Description Sam Fowler 2018-09-26 05:34:54 UTC

The html package (aka x/net/html) through 2018-09-17 in Go mishandles <math><template><mo><template>, leading to a "panic: runtime error" in parseCurrentToken in parse.go during an html.Parse call.


Upstream Issue:

https://github.com/golang/go/issues/27702

Comment 1 Sam Fowler 2018-09-26 05:36:41 UTC

Created heketi tracking bugs for this issue:

Affects: epel-6 [bug 1633026]
Affects: fedora-all [bug 1633025]


Created kompose tracking bugs for this issue:

Affects: fedora-all [bug 1633024]


Created origin tracking bugs for this issue:

Affects: fedora-all [bug 1633023]

Comment 2 Siddharth Sharma 2018-10-11 10:43:27 UTC

upstream fix:

https://github.com/golang/net/commit/cf3bd585ca2a5a21b057abd8be7eea2204af89d0

Comment 3 Sam Fowler 2018-10-15 05:40:31 UTC

Created golang-googlecode-net tracking bugs for this issue:

Affects: epel-6 [bug 1639105]
Affects: fedora-all [bug 1639104]

Comment 4 Scott Gayou 2018-10-16 21:02:29 UTC

Version packaged by RHEL (around 2014) does not seem to include the template functionality. Vulnerable behavior looks to have been introduced here, in 2017: https://github.com/golang/net/commit/500e7a4f953ddaf55d316b4d3adc516aa0379622

Reproducer does not trigger an exception.

Comment 5 Summer Long 2018-10-19 06:19:09 UTC

OpenStack OpTools 8/9 grafana versions do not include net/html, which includes the flawed code. OpenStack OpTools golang-googecode-net 9 does have the code, but this version does not support templates (which is needed for flaw exploitation).