
oss-sec mailing list archives
Re: MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client
From: Qualys Security Advisory <qsa () qualys com>
Date: Mon, 10 Mar 2025 12:01:20 +0000
Hi Buherátor, all, On Thu, Mar 06, 2025 at 10:15:08PM +0100, Buherátor wrote:
I also gave this a shot and came up with this query that uses data-flow tracking and also uses StackVariableReachability as suggested by Jordy. I also wrote (much) about the development process to help tweaking the query further:
Wow, this is amazing, and your write-up is a gem, thank you so much for working on all this and for sharing it! Just thinking out loud, but would it somehow be possible to continuously run Jordy's and/or Buherátor's CodeQL queries to prevent the reappearance of such issues? Maybe someone from CodeQL or GitHub Security Lab could chime in or help with this? Again, just thinking out loud. Thank you very much! With best regards, -- the Qualys Security Advisory team
Current thread:
- MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client Qualys Security Advisory (Feb 18)
- Re: MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client Solar Designer (Feb 21)
- Re: MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client Dmitry Belyavskiy (Feb 24)
- Re: MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client Solar Designer (Feb 24)
- Re: MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client Dmitry Belyavskiy (Feb 24)
- Re: MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client Dmitry Belyavskiy (Feb 24)
- Re: MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client Solar Designer (Feb 21)
- <Possible follow-ups>
- Re: MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client Jordy Zomer (Feb 21)
- Re: MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client Qualys Security Advisory (Feb 21)
- Re: MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client Buherátor (Mar 06)
- Re: MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client Qualys Security Advisory (Mar 10)
- Re: MitM attack against OpenSSH's VerifyHostKeyDNS-enabled client Qualys Security Advisory (Feb 21)