What is CVE-2019-6293?

CVE-2019-6293 is a medium-severity vulnerability in Westes Flex, classified under Uncontrolled Recursion. CVSS score: 5.5/10. Published 2019-01-15.

How severe is CVE-2019-6293?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2019-6293 known to be exploited?

8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Westes Flex

CVE-2019-6293

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: 0.016 (73.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Westes Flex — versions 2.6.4
N/a — versions n/a

Weakness classification (CWE)

CWE-674 — Uncontrolled Recursion

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2019-6293?: CVE-2019-6293 is a medium-severity vulnerability in Westes Flex, classified under Uncontrolled Recursion. CVSS score: 5.5/10. Published 2019-01-15.
How severe is CVE-2019-6293?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2019-6293 known to be exploited?: 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.