Out-of-bounds Write Affecting tcc package, versions <0.9.27+git20200814.62c30a4a-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN11-TCC-518812
- published31 May 2019
- disclosed31 May 2019
Introduced: 31 May 2019
CVE-2019-12495 (opens in a new tab)How to fix?
Upgrade Debian:11 tcc to version 0.9.27+git20200814.62c30a4a-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream tcc package and not the tcc package as distributed by Debian.
See How to fix? for Debian:11 relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2019-12495
- https://lists.nongnu.org/archive/html/tinycc-devel/2019-05/msg00044.html
- https://repo.or.cz/tinycc.git/commit/d04ce7772c2bc2781ab2502e0b1f1964488814b5
- http://www.securityfocus.com/bid/108541
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2019-12495