oss-sec mailing list archives
Re: ISC announces two BIND vulnerabilities
From: Solar Designer <solar () openwall com>
Date: Fri, 30 Jun 2017 12:57:05 +0200
For transparency and for information of those wanting to join the distros list (thus, for them to have a better idea of whether membership would be useful to them or not): ISC brought these issues to the distros list on June 28 (or the night of June 29 UTC), so distros list members had about 1.5 days of advance notice. On Fri, Jun 30, 2017 at 12:41:33PM +0200, Yves-Alexis Perez wrote:
As per list policy, and since I'm following these for Debian, here's some more details inline for the list.
Thank you, Yves-Alexis! Adding to this, attached are text exports of the ISC advisories, produced by running ELinks against "Print Article" versions of the ISC web pages. It would be great if ISC would resume posting the actual detail in here themselves, in addition to the website links.
The vulnerabilities are very similar to the knot one (no CVE yet) found by the same researchers (Synaktiv): CVE-2017-3142: An error in TSIG authentication can permit unauthorized zone transfers An attacker who is able to send and receive messages to an authoritative DNS server and who has knowledge of a valid TSIG key name may be able to circumvent TSIG authentication of AXFR requests via a carefully constructed request packet. A server that relies solely on TSIG keys for protection with no other ACL protection could be manipulated into: * providing an AXFR of a zone to an unauthorized recipient * accepting bogus NOTIFY packets CVE-2017-3043: An error in TSIG authentication can permit unauthorized dynamic updates An attacker who is able to send and receive messages to an authoritative DNS server and who has knowledge of a valid TSIG key name for the zone and service being targeted may be able to manipulate BIND into accepting an unauthorized dynamic update.
Thanks again, Alexander
Attachment:
CVE-2017-3142.txt
Description:
Attachment:
CVE-2017-3143.txt
Description:
Current thread:
- ISC announces two BIND vulnerabilities ISC Security Officer (Jun 30)
- Re: ISC announces two BIND vulnerabilities Yves-Alexis Perez (Jun 30)
- Re: ISC announces two BIND vulnerabilities Solar Designer (Jun 30)
- Re: ISC announces two BIND vulnerabilities Yves-Alexis Perez (Jun 30)
- Re: ISC announces two BIND vulnerabilities Yves-Alexis Perez (Jun 30)