01 Record

CVE-2020-8622

A truncated TSIG response can lead to an assertion failure

MediumPUBLISHEDCNA: isc

CNA base score6.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

View raw JSON

02 Description

A truncated TSIG response can lead to an assertion failure

03 Exploitation and scoring

Exploitation: Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision: Not assessed by CISA
EPSS probability: 5.59% probability of exploitation activity in the next 30 days.
EPSS percentile: Ranks above 92.2% of scored records. A rank, not a probability.
NVD base score: 6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD analysis status: Modified. NVD last modified this record on 2026-06-17.
Red Hat severity: Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2020-08-21 20:50Z6 YR AGO

Last updated

2024-09-16 17:14Z1 YR AGO

Reserved

2020-02-05

Assigning CNA

isc

Record state

PUBLISHED

Severity

Medium (CVSS 6.5)

CNA CVSS vector

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

Weaknesses

CWE-617Reachable AssertionBase
CWE-400Uncontrolled Resource ConsumptionClass

Data version

5.1

Document digest

67b111e03f4c36ef84cc60a6ca2dfc75e101c9a12d72443f7f5a056431e6b063

05 Affected products

VendorProductVersionsPlatforms

ISCBIND99.0.0 to < unspecified, < 9.11.22, 9.12.0 to < unspecified, < 9.16.6, 9.17.0 to < unspecified, < 9.17.4, 9.9.3-S1 to < Supported Preview*—

06 References

kb.isc.orghttps://kb.isc.org/docs/cve-2020-8622x_refsource_CONFIRM
lists.fedoraproject.orgFEDORA-2020-a02b7a0f21https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DQN62GBMCIC5AY4KYADGXNKVY6AJKSJE/vendor-advisoryx_refsource_FEDORA
usn.ubuntu.comUSN-4468-1https://usn.ubuntu.com/4468-1/vendor-advisoryx_refsource_UBUNTU
usn.ubuntu.comUSN-4468-2https://usn.ubuntu.com/4468-2/vendor-advisoryx_refsource_UBUNTU
www.debian.orgDSA-4752https://www.debian.org/security/2020/dsa-4752vendor-advisoryx_refsource_DEBIAN
lists.fedoraproject.orgFEDORA-2020-14c194e5afhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKAMJZXR66P6S5LEU4SN7USSNCWTXEXP/vendor-advisoryx_refsource_FEDORA
lists.debian.org[debian-lts-announce] 20200829 [SECURITY] [DLA 2355-1] bind9 security updatehttps://lists.debian.org/debian-lts-announce/2020/08/msg00053.htmlmailing-listx_refsource_MLIST
security.gentoo.orgGLSA-202008-19https://security.gentoo.org/glsa/202008-19vendor-advisoryx_refsource_GENTOO
lists.opensuse.orgopenSUSE-SU-2020:1699http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.htmlvendor-advisoryx_refsource_SUSE
lists.opensuse.orgopenSUSE-SU-2020:1701http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.htmlvendor-advisoryx_refsource_SUSE
www.oracle.comhttps://www.oracle.com/security-alerts/cpuoct2021.htmlx_refsource_MISC
security.netapp.comhttps://security.netapp.com/advisory/ntap-20200827-0003/x_refsource_CONFIRM
www.synology.comhttps://www.synology.com/security/advisory/Synology_SA_20_19x_refsource_CONFIRM

07 Remediation

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

01 Record index

CVE-2020-8622

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

07 Remediation

02 Records

CVE-2020-8622

02 Description

03 Exploitation and scoring

04 Metadata

05 Affected products

06 References

07 Remediation