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Vulnerability Details : CVE-2020-8625

BIND servers are vulnerable if they are running an affected version and are configured to use GSS-TSIG features. In a configuration which uses BIND's default settings the vulnerable code path is not exposed, but a server can be rendered vulnerable by explicitly setting valid values for the tkey-gssapi-keytab or tkey-gssapi-credentialconfiguration options. Although the default configuration is not vulnerable, GSS-TSIG is frequently used in networks where BIND is integrated with Samba, as well as in mixed-server environments that combine BIND servers with Active Directory domain controllers. The most likely outcome of a successful exploitation of the vulnerability is a crash of the named process. However, remote code execution, while unproven, is theoretically possible. Affects: BIND 9.5.0 -> 9.11.27, 9.12.0 -> 9.16.11, and versions BIND 9.11.3-S1 -> 9.11.27-S1 and 9.16.8-S1 -> 9.16.11-S1 of BIND Supported Preview Edition. Also release versions 9.17.0 -> 9.17.1 of the BIND 9.17 development branch
Publish Date : 2021-02-17 Last Update Date : 2021-03-19
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- CVSS Scores & Vulnerability Types

CVSS Score
6.8
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Execute Code
CWE ID 120

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2021:0670: bind security update (Important) oval:com.redhat.rhsa:def:20210670 unix
RHSA-2021:0671: bind security update (Important) oval:com.redhat.rhsa:def:20210671 unix
RHSA-2021:0672: bind security update (Important) oval:com.redhat.rhsa:def:20210672 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2020-8625

# Product Type Vendor Product Version Update Edition Language
1 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
2 OS Debian Debian Linux 10.0 * * * Version Details Vulnerabilities
3 OS Fedoraproject Fedora 32 * * * Version Details Vulnerabilities
4 OS Fedoraproject Fedora 33 * * * Version Details Vulnerabilities
5 Application ISC Bind * * * * Version Details Vulnerabilities
6 Application ISC Bind 9.11.3 S1 * * Version Details Vulnerabilities
7 Application ISC Bind 9.11.5 S3 * * Version Details Vulnerabilities
8 Application ISC Bind 9.11.5 S5 * * Version Details Vulnerabilities
9 Application ISC Bind 9.11.6 S1 * * Version Details Vulnerabilities
10 Application ISC Bind 9.11.7 S1 * * Version Details Vulnerabilities
11 Application ISC Bind 9.11.8 S1 * * Version Details Vulnerabilities
12 Application ISC Bind 9.11.21 S1 * * Version Details Vulnerabilities
13 Application ISC Bind 9.11.27 S1 * * Version Details Vulnerabilities
14 Application ISC Bind 9.16.8 S1 * * Version Details Vulnerabilities
15 Application ISC Bind 9.16.11 S1 * * Version Details Vulnerabilities
16 Application ISC Bind 9.17.0 * * * Version Details Vulnerabilities
17 Application ISC Bind 9.17.1 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Debian Debian Linux 2
Fedoraproject Fedora 2
ISC Bind 13

- References For CVE-2020-8625

https://kb.isc.org/v1/docs/cve-2020-8625 CONFIRM
https://www.debian.org/security/2021/dsa-4857
DEBIAN DSA-4857
http://www.openwall.com/lists/oss-security/2021/02/19/1
MLIST [oss-security] 20210218 BIND Operational Notification: Enabling the new BIND option "stale-answer-client-timeout" can result in unexpected server termination
https://lists.debian.org/debian-lts-announce/2021/02/msg00029.html
MLIST [debian-lts-announce] 20210219 [SECURITY] [DLA 2568-1] bind9 security update
http://www.openwall.com/lists/oss-security/2021/02/20/2
MLIST [oss-security] 20210220 BIND Operational Notification: Zone journal (.jnl) file incompatibility,after upgrading to BIND 9.16.12 and 9.17
https://www.zerodayinitiative.com/advisories/ZDI-21-195/
https://lists.fedoraproject.org/archives/list/[email protected]/message/QWCMBOSZOJIIET7BWTRYS3HLX5TSDKHX/
FEDORA FEDORA-2021-0595625865
https://lists.fedoraproject.org/archives/list/[email protected]/message/KYXAF7G45RXDVNUTWWCI2CVTHRZ67LST/
FEDORA FEDORA-2021-28f97e232d
https://security.netapp.com/advisory/ntap-20210319-0001/ CONFIRM
https://lists.fedoraproject.org/archives/list/[email protected]/message/EBTPWRQWRQEJNWY4NHO4WLS4KLJ3ERHZ/
FEDORA FEDORA-2021-8b4744f152

- Metasploit Modules Related To CVE-2020-8625

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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