CVE-2020-8620
HIGHCVSS 7.5/10EPSS 3.66%
Last modified
CVE-2020-8620 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 3.66% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Isc | Bind | >= 9.15.6, <= 9.16.5 | — |
| Isc | Bind | >= 9.17.0, <= 9.17.3 | — |
| Isc | Bind | 9.9.12 | S1 |
| Isc | Bind | 9.9.13 | S1 |
| Isc | Bind | 9.11.3 | S1 |
| Isc | Bind | 9.11.21 | S1 |
| Opensuse | Leap | 15.1 | — |
| Opensuse | Leap | 15.2 | — |
| Netapp | Steelstore Cloud Integrated Storage | All versions | — |
| Canonical | Ubuntu Linux | 12.04 | — |
| Canonical | Ubuntu Linux | 16.04 | — |
| Canonical | Ubuntu Linux | 18.04 | — |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.htmlThird Party Advisory
- https://kb.isc.org/docs/cve-2020-8620Vendor Advisory
- https://security.gentoo.org/glsa/202008-19Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200827-0003/Third Party Advisory
- https://usn.ubuntu.com/4468-1/Third Party Advisory
- https://www.synology.com/security/advisory/Synology_SA_20_19Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.htmlThird Party Advisory
- https://kb.isc.org/docs/cve-2020-8620Vendor Advisory
- https://security.gentoo.org/glsa/202008-19Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200827-0003/Third Party Advisory
- https://usn.ubuntu.com/4468-1/Third Party Advisory
- https://www.synology.com/security/advisory/Synology_SA_20_19Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-8620?
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.
How severe is CVE-2020-8620?
CVE-2020-8620 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.66% probability of exploitation in the next 30 days.
How do I fix CVE-2020-8620?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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- CVE-2020-8615A CSRF vulnerability in the Tutor LMS plugin before 1.5.3 fo…6.5
- CVE-2020-8616A malicious actor who intentionally exploits this lack of ef…8.6
- CVE-2020-8617Using a specially-crafted message, an attacker may potential…5.9
- CVE-2020-8618An attacker who is permitted to send zone data to a server v…4.9
- CVE-2020-8619In ISC BIND9 versions BIND 9.11.14 -> 9.11.19, BIND 9.14.9 -…4.9
- CVE-2020-8621In BIND 9.14.0 -> 9.16.5, 9.17.0 -> 9.17.3, If a server is c…7.5
- CVE-2020-8622In BIND 9.0.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3…6.5
- CVE-2020-8623In BIND 9.10.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.…7.5
- CVE-2020-8624In BIND 9.9.12 -> 9.9.13, 9.10.7 -> 9.10.8, 9.11.3 -> 9.11.2…4.3
- CVE-2020-8625BIND servers are vulnerable if they are running an affected …8.1
- CVE-2020-8626Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. Reason: T…
Are you affected by CVE-2020-8620?
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