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6.5

otfcc may read beyond buffer, risking crashes

CVE-2018-20588 · published 7 years ago
Summary

The otfcc 0.10.3-alpha library can read past the end of a memory area when handling certain Unicode data. This could cause the program to crash or behave unpredictably, especially when processing specially crafted font files. Update to a newer version or apply the provided patch, and avoid loading untrusted font files until the issue is fixed.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
otfcc_project otfcc 0.10.3
cpe:2.3:a:otfcc_project:otfcc:0.10.3:alpha:*:*:*:*:*:*
Original advisory text
lib/support/unicodeconv/unicodeconv.c in libotfcc.a in otfcc v0.10.3-alpha has a buffer over-read.
lib/support/unicodeconv/unicodeconv.c in libotfcc.a in otfcc v0.10.3-alpha has a buffer over-read.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
6.5 Medium
Exploitation
1% chance of attack within 30 days
Type
CWE-125Out-of-bounds Read
Timeline
Published30 Dec 2018
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2018-20588 · NVD
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