CVE-2018-17407

moderate-risk
Published 2018-09-23

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.

Do I need to act?

~
1.4% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (7)

Tex Live

Affected Vendors

Debian Canonical Tug

References (10)

Patch https://github.com/TeX-Live/texlive-source/commit/6ed0077520e2b0da1fd060c7f88db7...
Mailing List https://lists.debian.org/debian-security-announce/2018/msg00230.html
Third Party Advisory https://usn.ubuntu.com/3788-1/
Third Party Advisory https://usn.ubuntu.com/3788-2/
Third Party Advisory https://www.debian.org/security/2018/dsa-4299
Patch https://github.com/TeX-Live/texlive-source/commit/6ed0077520e2b0da1fd060c7f88db7...
Mailing List https://lists.debian.org/debian-security-announce/2018/msg00230.html
Third Party Advisory https://usn.ubuntu.com/3788-1/
Third Party Advisory https://usn.ubuntu.com/3788-2/
Third Party Advisory https://www.debian.org/security/2018/dsa-4299
42
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 4/34 · Minimal
Exposure 14/34 · Moderate