VDB
CVE-2019-6293
CVE-2019-6293
PUBLISHED
An issue was discovered in the function mark_beginning_as_normal in nfa.c in flex 2.6.4. There is a stack exhaustion problem caused by the mark_beginning_as_normal function making recursive calls to itself in certain scenarios involving lots of '*' characters. Remote attackers could leverage this vulnerability to cause a denial-of-service.
EPSS 0.45% · 64.1th percentile
Risk Scores
EPSS Score
0.45%
64.1th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:18.04:LTS | flex | 2.6.4-5, 0, 2.6.4-3 |
| Ubuntu:22.04:LTS | flex | 0, 2.6.4-8build1, 2.6.4-8build2 |
| Ubuntu:16.04:LTS | flex | 2.6.0-4, 2.6.0-7, 2.6.0-11 |
| Ubuntu:25.10 | flex | 2.6.4-8.2build1, 0 |
| Ubuntu:24.04:LTS | flex | 2.6.4-8.2, 0, 2.6.4-8.2build1 |
| Ubuntu:20.04:LTS | flex | 2.6.4-6.2, 0 |
Exploit Intelligence
- https://github.com/westes/flex/issues/414 (nist-nvd)
Timeline
- Jan 15, 2019 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Dec 27, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- May 1, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
- Nov 6, 2022 EPSS Score
- Jan 8, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2019-6293 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2019-6293 third-party-advisory