Vulnerability in re2c (CVE-2018-21232)
Summary
Vulnerability in re2c (CVE-2018-21232). Risk of unauthorized operations or information disclosure.
Original description
The description as published by the source.
re2c before 2.0 has uncontrolled recursion that causes stack consumption in find_fixed_tags.
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A weakness called CVE-2018-21232 was discovered in re2c.
Severity is Info. Low severity or not yet rated.
What you should do: update the affected software to the latest version. If unsure, ask your IT team or search the vendor's site for "re2c CVE-2018-21232".
CVE-2018-21232 (re2c). Severity: Info.
Response plan:
- Check the vendor advisory for affected versions and the patched release.
- If a vulnerable version is running in production, schedule maintenance (urgency from KEV/CVSS).
- If no patch yet, mitigate via WAF rule, disabling the affected feature, etc.
- Monitor logs / SIEM for known IOC and PoC signatures of this CVE.
PoCs and fix commits: see the 'References' section, MITRE, and NVD.
A weakness (CVE-2018-21232) in re2c. A serious software flaw has been identified.
Target versions of re2c (see vendor advisory). If running in production, identify exposure immediately.
Severity: Info. Low severity or not yet rated.
Update to the patched release as listed in the vendor advisory.
If a patch is not yet available, consider disabling the affected feature, applying WAF rules, blocking via network ACLs, or isolating the vulnerable version.
Check version information, scan dependencies via SBOM, and monitor SIEM for IOC and PoC signatures related to this CVE.
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2018-21232 re2c
- Ubuntu UBUNTU-CVE-2018-21232 re2c
References
- advisory openwall.com
- patch github.com
- web openwall.com