Description
The ssl_do_connect function in common/server.c in HexChat before 2.10.2, XChat, and XChat-GNOME does not verify that the server hostname matches a domain name in the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.
References (5)
Core 5
Core References
Patch x_refsource_confirm
https://github.com/hexchat/hexchat/commit/c9b63f7f9be01692b03fa15275135a4910a7e02d
Vendor Advisory vendor-advisory
x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2945-1
Issue Tracking x_refsource_confirm
https://github.com/hexchat/hexchat/issues/524
Vendor Advisory x_refsource_confirm
http://hexchat.readthedocs.org/en/latest/changelog.html
Issue Tracking x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=1081839
Scores
CVSS v3
6.5
EPSS
0.0076
EPSS Percentile
51.1%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Details
CWE
CWE-310
Status
published
Products (6)
canonical/ubuntu_linux
12.04
canonical/ubuntu_linux
14.04
canonical/ubuntu_linux
15.10
hexchat_project/hexchat
< 2.10.1
xchat/xchat
xchat/xchat_gnome
Published
Apr 21, 2016
Tracked Since
Feb 18, 2026