CVE-2013-0238 EXPLOIT
5.0
MEDIUM · CVSS 2.0 · EPSS 10% (pctl 95)
Patch early
A public exploit exists.
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.
Scoring
| CVSS | 5.0 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| EPSS | 9.96% — more likely to be exploited than 95% of all CVEs |
| Weakness | CWE-20 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2013-02-13 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| ircd-hybrid | ircd-hybrid |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | ircd-hybrid 8.0.5 - Denial of Service | 2013-04-12 |
References
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=699267
- http://osvdb.org/89623
- http://secunia.com/advisories/51948
- http://secunia.com/advisories/52106
- http://svn.ircd-hybrid.org:8000/viewcvs.cgi/ircd-hybrid/trunk/src/hostmask.c?r1=1786&r2=1785&pathrev=1786
- http://www.debian.org/security/2013/dsa-2618
- http://www.exploit-db.com/exploits/24951
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:093
- http://www.openwall.com/lists/oss-security/2013/01/29/8
- http://www.securityfocus.com/bid/57610
- https://exchange.xforce.ibmcloud.com/vulnerabilities/81695
- https://wiki.mageia.org/en/Support/Advisories/MGASA-2013-0055
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=699267
- http://osvdb.org/89623
- http://secunia.com/advisories/51948
- http://secunia.com/advisories/52106
- http://svn.ircd-hybrid.org:8000/viewcvs.cgi/ircd-hybrid/trunk/src/hostmask.c?r1=1786&r2=1785&pathrev=1786
- http://www.debian.org/security/2013/dsa-2618
- http://www.exploit-db.com/exploits/24951
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:093
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