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CVE-2009-4016
Integer underflow in the clean_string function in irc_string.c in (1) IRCD-hybrid 7.2.2 and 7.2.3, (2) ircd-ratbox before 2.2.9, and (3)…
Medium6.8EPSS 4.0%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
Integer underflow in the clean_string function in irc_string.c in (1) IRCD-hybrid 7.2.2 and 7.2.3, (2) ircd-ratbox before 2.2.9, and (3) oftc-hybrid before 1.6.8, when flatten_links is disabled, allows remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via a LINKS command.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 4.0% · top 9.4% of all CVEs (5 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.
Weakness
Affected products
n/a
- affected n/a
References (10)
- 38382 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- 38381 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- [ircd-ratbox] 20100125 ircd-ratbox-2.2.9 released (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- DSA-1980 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 38383 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://trac.oftc.net/projects/oftc-hybrid/browser/tags/oftc-hybrid-1.6.8/RELNOTES (opens in a new tab)x_refsource_CONFIRMx_transferred
- 37978 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://svn.ircd-hybrid.org:8000/viewcvs.cgi?rev=1044&view=rev (opens in a new tab)x_refsource_CONFIRMx_transferred
- 38210 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- http://security.debian.org/pool/updates/main/i/ircd-hybrid/ircd-hybrid_7.2.2.dfsg.2-4+lenny1.diff.gz (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2009-4016)Record last updated .