CVE-2020-11958
Published: August 31, 2023Last modified: August 31, 2023
Description
re2c 1.3 has a heap-based buffer overflow in Scanner::fill in parse/scanner.cc via a long lexeme.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | REQUIRED |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | re2c | Not affected (3.0-r0) |
| Stream | re2c | Not affected (3.1-r0) |
References
- http://www.openwall.com/lists/oss-security/2020/04/21/1
- https://blogs.gentoo.org/ago/2020/04/19/re2c-heap-overflow-in-scannerfill-scanner-cc/
- https://github.com/skvadrik/re2c/commit/c4603ba5ce229db83a2a4fb93e6d4b4e3ec3776a
- https://security.gentoo.org/glsa/202007-28
- https://usn.ubuntu.com/4338-1/
- https://usn.ubuntu.com/4338-2/
- https://www.openwall.com/lists/oss-security/2020/04/19/1