Bug 1632802 (CVE-2018-17407)

Summary:	CVE-2018-17407 texlive: Buffer overflow in t1_check_unusual_charstring function in writet1.c
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	abhgupta, dbaker, jokerman, sthangav, tcallawa, than, trankin
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:	2020-03-31 22:33:20 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:	1632803, 1632804, 1650521
Bug Blocks:	1632805

Description Pedro Sampaio 2018-09-25 15:13:44 UTC

An issue was discovered in t1_check_unusual_charstring functions in writet1.c files in TeX Live before 2018-09-21. A buffer overflow in the handling of Type 1 fonts allows arbitrary code execution when a malicious font is loaded by one of the vulnerable tools: pdflatex, pdftex, dvips, or luatex.

Upstream patch:

https://github.com/TeX-Live/texlive-source/commit/6ed0077520e2b0da1fd060c7f88db7b2e6068e4c

References:

https://lists.debian.org/debian-security-announce/2018/msg00230.html

Comment 1 Pedro Sampaio 2018-09-25 15:14:14 UTC

Created texlive tracking bugs for this issue:

Affects: fedora-all [bug 1632803]

Comment 4 Stefan Cornelius 2018-11-16 11:49:30 UTC

Statement:

This issue affects the versions of texlive as shipped with Red Hat Enterprise Linux 6 and 7.

Red Hat Enterprise Linux 6 is now in Maintenance Support 2 Phase of the support and maintenance life cycle. This has been rated as having a security impact of Moderate, and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.

Comment 6 errata-xmlrpc 2020-03-31 19:14:26 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:1036 https://access.redhat.com/errata/RHSA-2020:1036

Comment 7 Product Security DevOps Team 2020-03-31 22:33:20 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2018-17407