CVE-2020-8620

CWE-617 — Reachable AssertionCWE-400 — Uncontrolled Resource Consumption10 documents9 sources
Severity
7.5HIGH
EPSS
8.4%
top 7.69%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
ISC Bind9ISC BindCanonical Ubuntu Linux+1 more
Timeline
PublishedAug 21
Latest updateMay 24

Description

In BIND 9.15.6 -> 9.16.5, 9.17.0 -> 9.17.3, An attacker who can establish a TCP connection with the server and send data on that connection can exploit this to trigger the assertion failure, causing the server to exit.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages5 packages

▶CVEListV5isc/bind99.15.6 — *
▶Debianbind9< 1:9.16.6-1+3
▶Ubuntubind9< 1:9.10.3.dfsg.P4-8ubuntu1.17+2
▶NVDisc/bind9.15.6 — 9.16.5+5
▶NVDopensuse/leap15.1, 15.2+1

Also affects: Ubuntu Linux 12.04, 16.04, 18.04

🔴Vulnerability Details

4
GHSA
GHSA-p5fp-cw6q-m6xc: In BIND 9↗2022-05-24
▶
OSV
bind9 vulnerabilities↗2020-08-21
▶
CVEList
CVE-2020-8620: In BIND 9↗2020-08-21
▶
OSV
CVE-2020-8620: In BIND 9↗2020-08-21
▶

📋Vendor Advisories

4
Ubuntu
Bind vulnerabilities↗2020-08-21
▶
Red Hat
bind: A specially crafted large TCP payload can trigger an assertion failure in tcpdns.c↗2020-08-20
▶
Microsoft
In BIND 9.15.6 -> 9.16.5 9.17.0 -> 9.17.3 An attacker who can establish a TCP connection with the server and send data on that connection can exploit this to trigger the assertion failure causing the ↗2020-08-11
▶
Debian
CVE-2020-8620: bind9 - In BIND 9.15.6 -> 9.16.5, 9.17.0 -> 9.17.3, An attacker who can establish a TCP ...↗2020
▶

💬Community

1
Bugzilla
CVE-2020-8620 bind: A specially crafted large TCP payload can trigger an assertion failure in tcpdns.c↗2020-08-18
▶
CVE-2020-8620 (HIGH CVSS 7.5) | In BIND 9.15.6 -> 9.16.5 | cvebase.io