Vulnerability in Re2c

CVE-2018-21232

re2c before 2.0 has uncontrolled recursion that causes stack consumption in find_fixed_tags.

EPSS: 0.014 (70.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Re2c
N/a — versions n/a

Weakness classification (CWE)

CWE-674 — Uncontrolled Recursion

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Patch, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Mailing List, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (mailing-list, x_refsource_MLIST)

Frequently asked questions

What is CVE-2018-21232?: CVE-2018-21232 is a medium-severity vulnerability in Re2c, classified under Uncontrolled Recursion. CVSS score: 5.5/10. Published 2020-04-29.
How severe is CVE-2018-21232?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2018-21232 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.