CVE-2013-0238
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 1:7.2.2.dfsg.2-10 |
| debian | bullseye | fixed | 1:7.2.2.dfsg.2-10 |
| debian | sid | fixed | 1:7.2.2.dfsg.2-10 |
| debian | trixie | fixed | 1:7.2.2.dfsg.2-10 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| ircd-hybrid | ircd-hybrid | {"endIncluding":"8.0.5"} | |
| ircd-hybrid | ircd-hybrid | 7.2.0 | |
| ircd-hybrid | ircd-hybrid | 7.2.1 | |
| ircd-hybrid | ircd-hybrid | 7.2.2 | |
| ircd-hybrid | ircd-hybrid | 7.2.3 | |
| ircd-hybrid | ircd-hybrid | 7.3.0 | |
| ircd-hybrid | ircd-hybrid | 7.3.1 | |
| ircd-hybrid | ircd-hybrid | 8.0.0 | |
| ircd-hybrid | ircd-hybrid | 8.0.1 | |
| ircd-hybrid | ircd-hybrid | 8.0.2 | |
| ircd-hybrid | ircd-hybrid | 8.0.3 | |
| ircd-hybrid | ircd-hybrid | 8.0.4 | |
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
- https://security-tracker.debian.org/tracker/CVE-2013-0238
CWEs
CWE-20
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.