CVE-2020-8617

MEDIUM

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

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html

http://packetstormsecurity.com/files/157836/BIND-TSIG-Denial-Of-Service.html

http://www.openwall.com/lists/oss-security/2020/05/19/4

https://kb.isc.org/docs/cve-2020-8617

https://lists.debian.org/debian-lts-announce/2020/05/msg00031.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/JKJXVBOKZ36ER3EUCR7VRB7WGHIIMPNJ/

https://lists.fedoraproject.org/archives/list/[email protected]/message/WOGCJS2XQ3SQNF4W6GLZ73LWZJ6ZZWZI/

https://security.netapp.com/advisory/ntap-20200522-0002/

https://usn.ubuntu.com/4365-1/

https://usn.ubuntu.com/4365-2/

https://www.debian.org/security/2020/dsa-4689

Details

Source: MITRE

Published: 2020-05-19

Updated: 2020-10-20

Type: CWE-617

Risk Information

CVSS v2.0

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH

Tenable Plugins

View all (52 total)

IDNameProductFamilySeverity
144982Juniper JSA11091NessusJunos Local Security Checks
medium
143897NewStart CGSL CORE 5.04 / MAIN 5.04 : bind Multiple Vulnerabilities (NS-SA-2020-0063)NessusNewStart CGSL Local Security Checks
medium
143842SUSE SLED15 / SLES15 Security Update : bind (SUSE-SU-2020:2914-1)NessusSuSE Local Security Checks
medium
142543EulerOS Virtualization 3.0.6.6 : bind (EulerOS-SA-2020-2444)NessusHuawei Local Security Checks
medium
141839openSUSE Security Update : bind (openSUSE-2020-1701)NessusSuSE Local Security Checks
medium
141560openSUSE Security Update : bind (openSUSE-2020-1699)NessusSuSE Local Security Checks
medium
140830EulerOS 2.0 SP3 : bind (EulerOS-SA-2020-2063)NessusHuawei Local Security Checks
medium
140323EulerOS Virtualization for ARM 64 3.0.2.0 : bind (EulerOS-SA-2020-1953)NessusHuawei Local Security Checks
medium
140137EulerOS 2.0 SP5 : bind (EulerOS-SA-2020-1916)NessusHuawei Local Security Checks
medium
140000EulerOS Virtualization for ARM 64 3.0.6.0 : bind (EulerOS-SA-2020-1897)NessusHuawei Local Security Checks
medium
139755AIX 7.2 TL 4 : bind (IJ25927)NessusAIX Local Security Checks
medium
139754AIX 7.2 TL 3 : bind (IJ25926)NessusAIX Local Security Checks
medium
139753AIX 7.2 TL 2 : bind (IJ25925)NessusAIX Local Security Checks
medium
139752AIX 7.1 TL 5 : bind (IJ25924)NessusAIX Local Security Checks
medium
139669RHEL 7 : bind (RHSA-2020:3475)NessusRed Hat Local Security Checks
medium
139623RHEL 7 : bind (RHSA-2020:3471)NessusRed Hat Local Security Checks
medium
139622RHEL 7 : bind (RHSA-2020:3470)NessusRed Hat Local Security Checks
medium
139538RHEL 7 : bind (RHSA-2020:3433)NessusRed Hat Local Security Checks
medium
139466RHEL 6 : bind (RHSA-2020:3379)NessusRed Hat Local Security Checks
medium
139462RHEL 6 : bind (RHSA-2020:3378)NessusRed Hat Local Security Checks
medium
139380RHEL 8 : bind (RHSA-2020:2338)NessusRed Hat Local Security Checks
medium
139125EulerOS 2.0 SP8 : bind (EulerOS-SA-2020-1795)NessusHuawei Local Security Checks
medium
138773NewStart CGSL MAIN 6.01 : bind Multiple Vulnerabilities (NS-SA-2020-0031)NessusNewStart CGSL Local Security Checks
medium
138545SUSE SLES12 Security Update : bind (SUSE-SU-2020:1914-1)NessusSuSE Local Security Checks
medium
138383RHEL 7 : bind (RHSA-2020:2893)NessusRed Hat Local Security Checks
medium
137518EulerOS 2.0 SP2 : bind (EulerOS-SA-2020-1676)NessusHuawei Local Security Checks
medium
137377F5 Networks BIG-IP : BIND vulnerability (K05544642)NessusF5 Networks Local Security Checks
medium
137318Photon OS 1.0: Bindutils PHSA-2020-1.0-0298NessusPhotonOS Local Security Checks
medium
137219Oracle Linux 8 : bind (ELSA-2020-2338)NessusOracle Linux Local Security Checks
medium
137191Photon OS 2.0: Bindutils PHSA-2020-2.0-0249NessusPhotonOS Local Security Checks
medium
137187Photon OS 3.0: Bindutils PHSA-2020-3.0-0101NessusPhotonOS Local Security Checks
medium
137174Scientific Linux Security Update : bind on SL6.x i386/x86_64 (20200603)NessusScientific Linux Local Security Checks
medium
137170OracleVM 3.3 / 3.4 : bind (OVMSA-2020-0021)NessusOracleVM Local Security Checks
critical
137151CentOS 6 : bind (CESA-2020:2383)NessusCentOS Local Security Checks
medium
137139RHEL 8 : bind (RHSA-2020:2404)NessusRed Hat Local Security Checks
medium
137129Oracle Linux 6 : bind (ELSA-2020-2383)NessusOracle Linux Local Security Checks
medium
137124Fedora 31 : 32:bind / bind-dyndb-ldap / dnsperf (2020-f9dcd4e9d5)NessusFedora Local Security Checks
medium
137108Fedora 32 : 32:bind (2020-2d89cbcfd9)NessusFedora Local Security Checks
medium
137092Amazon Linux AMI : bind (ALAS-2020-1369)NessusAmazon Linux Local Security Checks
medium
137082RHEL 7 : bind (RHSA-2020:2344)NessusRed Hat Local Security Checks
medium
137070RHEL 6 : bind (RHSA-2020:2383)NessusRed Hat Local Security Checks
medium
137063RHEL 8 : bind (RHSA-2020:2345)NessusRed Hat Local Security Checks
medium
137041Scientific Linux Security Update : bind on SL7.x x86_64 (20200601)NessusScientific Linux Local Security Checks
medium
137037Oracle Linux 7 : bind (ELSA-2020-2344)NessusOracle Linux Local Security Checks
medium
137007CentOS 7 : bind (CESA-2020:2344)NessusCentOS Local Security Checks
medium
136983Debian DLA-2227-1 : bind9 security updateNessusDebian Local Security Checks
medium
136808ISC BIND Denial of ServiceNessusDNS
high
136799SUSE SLES12 Security Update : bind (SUSE-SU-2020:1350-1)NessusSuSE Local Security Checks
medium
136749Amazon Linux 2 : bind (ALAS-2020-1426)NessusAmazon Linux Local Security Checks
medium
136730Ubuntu 16.04 LTS / 18.04 LTS / 19.10 / 20.04 : Bind vulnerabilities (USN-4365-1)NessusUbuntu Local Security Checks
medium
136728Slackware 14.0 / 14.1 / 14.2 / current : bind (SSA:2020-140-01)NessusSlackware Local Security Checks
medium
136721Debian DSA-4689-1 : bind9 - security updateNessusDebian Local Security Checks
medium