6.5

CVE-2020-8622: canonical ubuntu_linux Reachable Assertion

CVSS: 6.5v3.1MediumModified
AliasesALPINE-CVE-2020-8622SUSE-SU-2021:2876-1RHSA-2020:4183
Published 21-08-2020Last modified 16-09-2024
Open JSON

Vulnerability summary

CVE-2020-8622 is a medium (CVSS 6.5) Reachable Assertion vulnerability in canonical ubuntu_linux. EPSS estimates a 5.59% chance of exploitation in the next 30 days, higher than 92.8% of scored vulnerabilities.

Overall risk
27/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
5.59%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 13 · Related 8
DLA-2355-1DSA-4752-1MGASA-2021-0036OPENSUSE-SU-2020:1699-1OPENSUSE-SU-2020:1701-1OPENSUSE-SU-2024:10650-1

Timeline

  1. 21-08-2020
    PublishedVulnerability first disclosed.
  2. 16-09-2024
    Last modifiedVulnerability information updated.

Description

In BIND 9.0.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker on the network path for a TSIG-signed request, or operating the server receiving the TSIG-signed request, could send a truncated response to that request, triggering an assertion failure, causing the server to exit. Alternately, an off-path attacker would have to correctly guess when a TSIG-signed request was sent, along with other characteristics of the packet and message, and spoof a truncated response to trigger an assertion failure, causing the server to exit.

CVSS metrics

9 scores · 8 sources · 2 versions

EPSS trend

Probability

5.59%

Chance of exploitation in the next 30 days

Percentile

93%

Versus all other CVEs

30-day change

0.00 pp

From 5.59% on 18-09-2026

18-09-202618-10-2026
EPSS score
5.59%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Redhat7 products
  • bind< 32:9.8.2-0.68.rc1.el6_10.8
  • bind-chroot< 32:9.8.2-0.68.rc1.el6_10.8
  • bind-debuginfo< 32:9.8.2-0.68.rc1.el6_10.8
  • bind-devel< 32:9.8.2-0.68.rc1.el6_10.8
  • bind-libs< 32:9.8.2-0.68.rc1.el6_10.8
Suse7 products
  • bind&distro=HPE Helion OpenStack 8< 9.9.9P1-63.28.1
  • bind&distro=SUSE Linux Enterprise Server 12 SP2-BCL< 9.9.9P1-63.28.1
  • bind&distro=SUSE Linux Enterprise Server 12 SP3-BCL< 9.9.9P1-63.28.1
  • bind&distro=SUSE Linux Enterprise Server 12 SP3-LTSS< 9.9.9P1-63.28.1
  • bind&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP3< 9.9.9P1-63.28.1
Debian2 products
Isc2 products
  • bind≥ 9.0.0, ≤ 9.11.21 | ≥ 9.12.0, ≤ 9.16.5 | ≥ 9.17.0, ≤ 9.17.3 | 9.9.3:s1 | 9.11.21:s1
  • bind9≥ 9.0.0, < unspecified | ≥ unspecified, < 9.11.22 | ≥ 9.12.0, < unspecified | ≥ unspecified, < 9.16.6 | ≥ 9.17.0, < unspecified | ≥ unspecified, < 9.17.4 | ≥ 9.9.3-S1, < Supported Preview*
Alpine1 product
  • bind≥ 9.0.0, < 9.16.6-r0
Canonical1 product
Chainguard1 product
  • bindAll versions (No fix recorded)
Fedoraproject1 product
Netapp1 product
Opensuse1 product
Oracle1 product
Synology1 product
Ubuntu1 product
  • bind9< 1:9.10.3.dfsg.P4-8ubuntu1.17 | < 1:9.11.3+dfsg-1ubuntu1.13 | < 1:9.16.1-0ubuntu2.3 | < 1:9.9.5.dfsg-3ubuntu0.19+esm3
Wolfi1 product
  • bindAll versions (No fix recorded)

14 vendors · 28 products

References

29 links
Show all 29 references