Vulnerability Database

289,599

Total vulnerabilities in the database

CVE-2020-8617

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.

  • Published: May 19, 2020
  • Updated: Apr 14, 2023
  • CVE: CVE-2020-8617
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 5.9
  • AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2:

  • Severity: Low
  • Score: 4.3
  • AV:N/AC:M/Au:N/C:N/I:N/A:P

CWEs:

Software From Fixed in
isc / bind 9.12.0 9.12.4.x
isc / bind 9.12.4-p1 9.12.4-p1.x
isc / bind 9.13.0 9.13.7.x
isc / bind 9.12.4-p2 9.12.4-p2.x
isc / bind 9.17.0 9.17.1.x
isc / bind 9.16.0 9.16.2.x
isc / bind 9.14.0 9.14.11.x
isc / bind 9.0.0 9.11.18.x
isc / bind 9.15.0 9.15.6.x
isc / bind 9.11.7-s1 9.11.7-s1.x
isc / bind 9.11.3-s1 9.11.3-s1.x
isc / bind 9.11.6-s1 9.11.6-s1.x
isc / bind 9.10.5-s1 9.10.5-s1.x
isc / bind 9.11.5-s5 9.11.5-s5.x
isc / bind 9.11.5-s3 9.11.5-s3.x
isc / bind 9.9.3-s1 9.9.3-s1.x
isc / bind 9.10.7-s1 9.10.7-s1.x
isc / bind 9.11.8-s1 9.11.8-s1.x
debian / debian_linux 8.0 8.0.x
debian / debian_linux 9.0 9.0.x
debian / debian_linux 10.0 10.0.x
fedoraproject / fedora 31 31.x
fedoraproject / fedora 32 32.x
opensuse / leap 15.1 15.1.x
opensuse / leap 15.2 15.2.x
canonical / ubuntu_linux 18.04 18.04.x
canonical / ubuntu_linux 14.04 14.04.x
canonical / ubuntu_linux 19.10 19.10.x
canonical / ubuntu_linux 20.04 20.04.x
canonical / ubuntu_linux 16.04 16.04.x
canonical / ubuntu_linux 12.04 12.04.x