CVE-2020-8617

Katalog CVE

CVSS 5.9 · Medium EPSS 93,4%

Kerentanan Reachable Assertion pada isc bind, debian linux +3 lainnya. Skor CVSS 3.1 5.9 (Medium) menurut NVD.

Deskripsi (NVD)

Using a specially-crafted message, an attacker may potentially cause a BIND server to reach an inconsistent state if the attacker knows (or successfully guesses) the name of a TSIG key used by the server. Since BIND, by default, configures a local session key even on servers whose configuration does not otherwise make use of it, almost all current BIND servers are vulnerable. In releases of BIND dating from March 2018 and after, an assertion check in tsig.c detects this inconsistent state and deliberately exits. Prior to the introduction of the check the server would continue operating in an inconsistent state, with potentially harmful results.

Rincian

Terbit di NVD

19 Mei 2020

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

5.9 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-617: Reachable Assertion

EPSS (30 hari)

93,4% peluang dieksploitasi; lebih tinggi dari 99,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://kb.isc.org/docs/cve-2020-8617 patch · advisory vendor
• http://www.openwall.com/lists/oss-security/2020/05/19/4 mailing list · patch · advisory pihak ketiga
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html mailing list · advisory pihak ketiga
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html mailing list · advisory pihak ketiga
• http://packetstormsecurity.com/files/157836/BIND-TSIG-Denial-Of-Service.html advisory pihak ketiga · vdb entry
• https://lists.debian.org/debian-lts-announce/2020/05/msg00031.html mailing list · advisory pihak ketiga
• https://security.netapp.com/advisory/ntap-20200522-0002/ advisory pihak ketiga
• https://usn.ubuntu.com/4365-1/ advisory pihak ketiga
• https://usn.ubuntu.com/4365-2/ advisory pihak ketiga
• https://www.debian.org/security/2020/dsa-4689 advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JKJXVBOKZ36ER...
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WOGCJS2XQ3SQN...