medium
4.3
CWE
269
Advisory Published
CVE Published
Updated

CVE-2020-8624: update-policy rules of type "subdomain" are enforced incorrectly

First published: Wed Jul 29 2020(Updated: )

In BIND 9.9.12 -> 9.9.13, 9.10.7 -> 9.10.8, 9.11.3 -> 9.11.21, 9.12.1 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.12-S1 -> 9.9.13-S1, 9.11.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker who has been granted privileges to change a specific subset of the zone's content could abuse these unintended additional privileges to update other contents of the zone.

Credit: security-officer@isc.org security-officer@isc.org

Affected SoftwareAffected VersionHow to fix
ISC BIND>=9.9.12<=9.9.13
ISC BIND>=9.10.7<=9.10.8
ISC BIND>=9.11.3<=9.11.21
ISC BIND>=9.12.1<=9.16.5
ISC BIND>=9.17.0<=9.17.3
ISC BIND=9.9.12-s1
ISC BIND=9.9.13-s1
ISC BIND=9.11.3-s1
ISC BIND=9.11.21-s1
Netapp Steelstore Cloud Integrated Storage
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=20.04
Debian Debian Linux=10.0
Fedoraproject Fedora=31
Fedoraproject Fedora=32
openSUSE Leap=15.1
openSUSE Leap=15.2
IBM Cloud Pak for Security (CP4S)<=1.7.2.0
IBM Cloud Pak for Security (CP4S)<=1.7.1.0
IBM Cloud Pak for Security (CP4S)<=1.7.0.0
debian/bind9
1:9.16.50-1~deb11u2
1:9.16.50-1~deb11u1
1:9.18.28-1~deb12u2
1:9.20.2-1

Remedy

Upgrade to the patched release most closely related to your current version of BIND: BIND 9.11.22 BIND 9.16.6 BIND 9.17.4 BIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers. BIND 9.11.22-S1

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2020-8624?

    CVE-2020-8624 is a vulnerability in ISC BIND that could allow a remote authenticated attacker to bypass security restrictions.

  • Which versions of BIND are affected by CVE-2020-8624?

    Versions 9.9.12 -> 9.9.13, 9.10.7 -> 9.10.8, 9.11.3 -> 9.11.21, 9.12.1 -> 9.16.5, and 9.17.0 -> 9.17.3 are affected.

  • How can an attacker exploit CVE-2020-8624?

    An attacker who has been granted privileges to change a specific subset of the zone's content could exploit this vulnerability.

  • What is the severity of CVE-2020-8624?

    The severity of CVE-2020-8624 is high with a CVSS score of 4.3.

  • How do I fix CVE-2020-8624?

    To fix CVE-2020-8624, upgrade BIND to a version that is not affected by the vulnerability.

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