CVE - CVE-2020-8617

CVE-ID
CVE-2020-8617	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
Using a specially-crafted message, an attacker may potentially cause a BIND server to reach an inconsistent state if the attacker knows (or successfully guesses) the name of a TSIG key used by the server. Since BIND, by default, configures a local session key even on servers whose configuration does not otherwise make use of it, almost all current BIND servers are vulnerable. In releases of BIND dating from March 2018 and after, an assertion check in tsig.c detects this inconsistent state and deliberately exits. Prior to the introduction of the check the server would continue operating in an inconsistent state, with potentially harmful results.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
CONFIRM:https://kb.isc.org/docs/cve-2020-8617 CONFIRM:https://security.netapp.com/advisory/ntap-20200522-0002/ DEBIAN:DSA-4689 URL:https://www.debian.org/security/2020/dsa-4689 FEDORA:FEDORA-2020-2d89cbcfd9 URL:https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WOGCJS2XQ3SQNF4W6GLZ73LWZJ6ZZWZI/ FEDORA:FEDORA-2020-f9dcd4e9d5 URL:https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JKJXVBOKZ36ER3EUCR7VRB7WGHIIMPNJ/ MISC:http://packetstormsecurity.com/files/157836/BIND-TSIG-Denial-Of-Service.html MLIST:[debian-lts-announce] 20200530 [SECURITY] [DLA 2227-1] bind9 security update URL:https://lists.debian.org/debian-lts-announce/2020/05/msg00031.html MLIST:[oss-security] 20200519 Two vulnerabilities disclosed in BIND (CVE-2020-8616 and CVE-2020-8617) URL:http://www.openwall.com/lists/oss-security/2020/05/19/4 SUSE:openSUSE-SU-2020:1699 URL:http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html SUSE:openSUSE-SU-2020:1701 URL:http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html UBUNTU:USN-4365-1 URL:https://usn.ubuntu.com/4365-1/ UBUNTU:USN-4365-2 URL:https://usn.ubuntu.com/4365-2/
Assigning CNA
Internet Systems Consortium (ISC)
Date Record Created
20200205	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20200205)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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