Description
The DNS::GetResult function in dns.cpp in InspIRCd before 2.0.19 allows remote DNS servers to cause a denial of service (netsplit) via an invalid character in a PTR response, as demonstrated by a "\032" (whitespace) character in a hostname.
References (5)
Core 5
Core References
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/201512-13
Exploit x_refsource_confirm
https://github.com/inspircd/inspircd/issues/1033
Vendor Advisory x_refsource_confirm
http://www.inspircd.org/2015/04/16/v2019-released.html
Vendor Advisory vendor-advisory
x_refsource_debian
http://www.debian.org/security/2016/dsa-3527
Exploit x_refsource_confirm
https://github.com/inspircd/inspircd/commit/6058483d9fbc1b904d5ae7cfea47bfcde5c5b559
Scores
CVSS v3
8.6
EPSS
0.0228
EPSS Percentile
81.1%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Details
CWE
CWE-20
Status
published
Products (3)
debian/debian_linux
7.0
debian/debian_linux
8.0
inspircd/inspircd
< 2.0.18
Published
Apr 12, 2016
Tracked Since
Feb 18, 2026