PT-2017-14824 · Tex Users+1 · Tex Live+1

Published 2017-12-14 · Updated 2018-01-02 · CVE-2017-17513

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions TeX Live versions through 20170524

Description The issue is related to the lack of validation of strings before launching the program specified by the BROWSER environment variable. This could allow remote attackers to conduct argument-injection attacks via a crafted URL. The affected files include linked scripts/context/stubs/unix/mtxrun, texmf-dist/scripts/context/stubs/mswin/mtxrun.lua, and texmf-dist/tex/luatex/lualibs/lualibs-os.lua.

Recommendations For TeX Live versions through 20170524, consider validating strings before launching the program specified by the BROWSER environment variable to prevent argument-injection attacks. As a temporary workaround, restrict the use of the BROWSER environment variable until a patch is available.

Fix

Special Elements Injection

Weakness Enumeration

CWE-74

Related Identifiers

CVE-2017-17513

Affected Products

Debian

Tex Live

References · 10

• https://osv.dev/vulnerability/CVE-2017-17513 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2017-17513 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2017-17513 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2017-17513 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-17513 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-17513 · Security Note
• https://cve.org/CVERecord?id=CVE-2017-17513 · Security Note
• https://sources.debian.org/src/texlive-base/2017.20171128-1/texmf-dist/tex/luatex/lualibs/lualibs-os.lua/#L153 · Note
• https://sources.debian.org/src/texlive-bin/2016.20160513.41080.dfsg-2/texk/texlive/linked_scripts/context/stubs/unix/mtxrun/#L3004 · Note
• https://sources.debian.org/src/context/2017.05.15.20170613-2/texmf-dist/scripts/context/stubs/mswin/mtxrun.lua/?hl=3424#L3424 · Note