CVE-2020-8623
In BIND 9.10.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.10.5-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker that can reach a vulnerable system with a specially crafted query packet can trigger a crash.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (6.63%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In BIND 9.10.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.10.5-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker that can reach a vulnerable system with a specially crafted query packet can trigger a crash. To be vulnerable, the system must: * be running BIND that was built with "--enable-native-pkcs11" * be signing one or more zones with an RSA key * be able to receive queries from a possible attacker
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 6.63% probability · 94th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-617
- Affected
- isc/bind · fedoraproject/fedora · opensuse/leap · debian/debian linux · canonical/ubuntu linux · synology/dns server · netapp/steelstore cloud integrated storage
- Source
- security-officer@isc.org
EPSS 6.6% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.htmlMailing List, Third Party Advisory
- https://kb.isc.org/docs/cve-2020-8623Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/08/msg00053.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DQN62GBMCIC5AY4KYADGXNKVY6AJKSJE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKAMJZXR66P6S5LEU4SN7USSNCWTXEXP/
- 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.debian.org/security/2020/dsa-4752Third Party Advisory
- https://www.synology.com/security/advisory/Synology_SA_20_19Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.htmlMailing List, Third Party Advisory
- https://kb.isc.org/docs/cve-2020-8623Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/08/msg00053.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DQN62GBMCIC5AY4KYADGXNKVY6AJKSJE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKAMJZXR66P6S5LEU4SN7USSNCWTXEXP/
- 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.debian.org/security/2020/dsa-4752Third Party Advisory
- https://www.synology.com/security/advisory/Synology_SA_20_19Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.