CVE-2019-6293 — MEDIUM (5.5)

Vulnerability Description

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.

CVSS Score

5.5

MEDIUM

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Westes	Flex	2.6.4

Related Weaknesses (CWE)

CWE-674

References

https://github.com/westes/flex/issues/414ExploitThird Party Advisory
https://github.com/westes/flex/issues/414ExploitThird Party Advisory

FAQ

What is CVE-2019-6293?

CVE-2019-6293 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 i...

How severe is CVE-2019-6293?

CVE-2019-6293 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2019-6293?

Check the references section above for vendor advisories and patch information. Affected products include: Westes Flex.