CVE-2013-0238
The try_parse_v4_netmask function in hostmask.c in IRCD-Hybrid before 8.0.6 does not properly validate masks, which allows remote…
- 5.0MediumCVSS base score
- 10.0%Exploitation in 30 daysEPSS · top 4.3% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
The try_parse_v4_netmask function in hostmask.c in IRCD-Hybrid before 8.0.6 does not properly validate masks, which allows remote attackers to cause a denial of service (crash) via a mask that causes a negative number to be parsed.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it. A reference of the record is tagged as an exploit.
Show the exploits2
Exploit-DB1 entry
- ircd-hybrid 8.0.5 - Denial of Service (Exploit-DB entry) (opens in a new tab)
EDB-ID 24951dos, linuxpublished 12 Apr 2013Not verified
References tagged exploit1 reference
- 24951 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By redhat
- 2 months later
· 2 months later
Published
- 11 years later
· 11 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 10.0% · top 4.3% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Affected products
n/a
- affected n/a
References
12
- DSA-2618 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 52106 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- [oss-security] 20130129 ircd-hybrid: Denial of service vulnerability in hostmask.c:try_parse_v4_netmask() (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- MDVSA-2013:093 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- 57610 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- http://svn.ircd-hybrid.org:8000/viewcvs.cgi/ircd-hybrid/trunk/src/hostmask.c?r1=1786&r2=1785&pathrev=1786 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 51948 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- ircdhybrid-tryparsev4netmask-dos(81695) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- https://wiki.mageia.org/en/Support/Advisories/MGASA-2013-0055 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 89623 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- 24951 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=699267 (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)
- EUVD EUVD-2013-0271 (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://cveledger.app/cve/CVE-2013-0238)Record last updated .