Vulnerability · Published Apr 21, 2020 · Assigned by mitre
CVE-2020-11958
High 7.8
In plain English
A high-severity security flaw in the re2c package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 77% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.8High
Exploit odds (30 days)1.7%top 22.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
re2c 1.3 has a heap-based buffer overflow in Scanner::fill in parse/scanner.cc via a long lexeme.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | re2c | 1.3-r1 | ALPINE-CVE-2020-11958 |
| Alpine:v3.21 | re2c | 1.3-r1 | ALPINE-CVE-2020-11958 |
| Alpine:v3.22 | re2c | 1.3-r1 | ALPINE-CVE-2020-11958 |
| Alpine:v3.23 | re2c | 1.3-r1 | ALPINE-CVE-2020-11958 |
| Alpine:v3.24 | re2c | 1.3-r1 | ALPINE-CVE-2020-11958 |
| Debian:12 | re2c | 1.3-2 | DEBIAN-CVE-2020-11958 |
| Debian:13 | re2c | 1.3-2 | DEBIAN-CVE-2020-11958 |
| Debian:14 | re2c | 1.3-2 | DEBIAN-CVE-2020-11958 |
Affected products (as reported)
References
- https://blogs.gentoo.org/ago/2020/04/19/re2c-heap-overflow-in-scannerfill-scanner-cc/ x_refsource_MISC
- https://www.openwall.com/lists/oss-security/2020/04/19/1 x_refsource_MISC
- https://github.com/skvadrik/re2c/commit/c4603ba5ce229db83a2a4fb93e6d4b4e3ec3776a x_refsource_MISC
- [oss-security] 20200421 Re: re2c: heap overflow in Scanner::fill (scanner.cc) mailing-list, x_refsource_MLIST
- USN-4338-1 vendor-advisory, x_refsource_UBUNTU
- USN-4338-2 vendor-advisory, x_refsource_UBUNTU
- GLSA-202007-28 vendor-advisory, x_refsource_GENTOO