PT-2019-12824 · Fabrice Bellard · Tiny C Compiler

Published 2019-05-31 · Updated 2019-06-03 · CVE-2019-12495

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Tiny C Compiler (aka TinyCC or TCC) version 0.9.27

Description An issue in Tiny C Compiler allows a one-byte out-of-bounds write in the gsym addr function due to mishandling of section switches by tccasm.c when compiling a crafted source file.

Recommendations For Tiny C Compiler version 0.9.27, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2019-12495

Affected Products

Tiny C Compiler

References · 10

• 🔥 https://lists.nongnu.org/archive/html/tinycc-devel/2019-05/msg00044.html · Exploit
• https://osv.dev/vulnerability/CVE-2019-12495 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-12495 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-12495 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-12495 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-12495 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-12495 · Vendor Advisory
• https://repo.or.cz/tinycc.git/commit/d04ce7772c2bc2781ab2502e0b1f1964488814b5 · Patch
• https://cve.org/CVERecord?id=CVE-2019-12495 · Security Note
• http://securityfocus.com/bid/108541 · Note