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CVE-2013-0238

MediumPublished

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...

Published: Feb 13, 2013
Updated: Aug 6, 2024
Assigning CNA: redhat
Evidence observed: Apr 12, 2013

Primary CVSS

5.0/ 10Medium

nvd · CVSS 2.0

AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS probability estimate

10.0%

Low · next 30 days

Percentile: 95.4%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

ircd-hybrid 8.0.5 - Denial of ServiceExploit
kingcope · linux · Apr 12, 2013

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