5.5

CVE-2019-6293: westes flex Uncontrolled Recursion

CVSS: 5.5v3.0MediumModified
AliasesUBUNTU-CVE-2019-6293DEBIAN-CVE-2019-6293CGA-2m52-2qxf-753x
Published 15-01-2019Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2019-6293 is a medium (CVSS 5.5) Uncontrolled Recursion vulnerability in westes flex. EPSS estimates a 1.60% chance of exploitation in the next 30 days, higher than 75.4% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.0 (NVD)
EPSS score
1.60%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Advisory lineage

Upstream 0 · Downstream 0 · Related 2
CGA-G955-Q62H-76XWCGA-W4J6-X895-WGX6

Timeline

  1. 15-01-2019
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

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 metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

1.60%

Chance of exploitation in the next 30 days

Percentile

75%

Versus all other CVEs

30-day change

0.00 pp

From 1.60% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.60%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Flex

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Chainguard1 product
  • flexAll versions (No fix recorded)
Debian1 product
  • flexAll versions (No fix recorded)
Ubuntu1 product
  • flexAll versions (No fix recorded)
Westes1 product
Wolfi1 product
  • flexAll versions (No fix recorded)

5 vendors · 5 products

References

5 links