oss-sec mailing list archives
Re: CVE for the TSIG issue in knot?
From: Salvatore Bonaccorso <carnil () debian org>
Date: Sat, 8 Jul 2017 14:40:16 +0200
Hi On Sat, Jun 24, 2017 at 02:28:20PM +0200, Solar Designer wrote:
On Sat, Jun 24, 2017 at 01:58:23PM +0200, Yves-Alexis Perez wrote:I noticed the recent issue in knot with TSIG bypass (https://lists.nic.cz/pipermail/knot-dns-users/2017-June/001144.html)Is is inappropriate to post only a link in here. In cases like this, please also quote at least the most essential portion of the content you're referring to, which is: "CZ.NIC has released Knot DNS 2.5.2 and Knot DNS 2.4.5. Beside several fixes and improvements, these versions fix a flaw within the TSIG protocol implementation that would allow an attacker with a valid key name and algorithm to bypass the TSIG authentication if no additional ACL restrictions is set. This vulnerability was discovered by security experts from Synacktiv. Special thanks to them!"
FTR, this issue has been assigned CVE-2017-11104. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-11104 Regards, Salvatore
Current thread:
- Re: CVE for the TSIG issue in knot? Salvatore Bonaccorso (Jul 08)