CVE-2019-12495
5.5
MEDIUM
CVSS 3.1
EPSS 0.19%
Description
An issue was discovered in Tiny C Compiler (aka TinyCC or TCC) 0.9.27. Compiling a crafted source file leads to a one-byte out-of-bounds write in the gsym_addr function in x86_64-gen.c. This occurs because tccasm.c mishandles section switches.
How to fix CVE-2019-12495
To remediate CVE-2019-12495, upgrade the affected package to a fixed version below.
- Debian/tcc—upgrade to 0.9.27+git20200814.62c30a4a-1 or later
Is CVE-2019-12495 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 0.9.27+git20200814.62c30a4a-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |