Vulnerability in Isc Bind
CVE-2020-8617
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…
EPSS: 0.934 (99.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Isc Bind — versions 9.12.4, 9.9.3, 9.10.5
- Isc Bind9 — versions 9.0.0 -> 9.11.18, 9.12.0 -> 9.12.4-P2, 9.14.0 -> 9.14.11, 9.16.0 -> 9.16.2, and releases 9.17.0 -> 9.17.1 of the 9.17 experimental development branch. All releases in the obsolete 9.13 and 9.15 development branches. All releases of BIND Supported Preview Edition from 9.9.3-S1 -> 9.11.18-S1
- Canonical Ubuntu_linux — versions 12.04, 14.04, 16.04
- Debian Debian_linux — versions 8.0, 9.0, 10.0
- Fedoraproject Fedora — versions 31, 32
- Opensuse Leap — versions 15.1, 15.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-officer@isc.org (x_refsource_CONFIRM, Patch, Vendor Advisory)
- security-officer@isc.org (mailing-list, x_refsource_MLIST, Patch, Mailing List, Third Party Advisory)
- security-officer@isc.org (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- security-officer@isc.org (x_refsource_CONFIRM, Third Party Advisory)
- security-officer@isc.org (VDB Entry, Third Party Advisory, x_refsource_MISC)
- security-officer@isc.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security-officer@isc.org (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- security-officer@isc.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- security-officer@isc.org (x_refsource_FEDORA, vendor-advisory)
- security-officer@isc.org (x_refsource_FEDORA, vendor-advisory)
Frequently asked questions
- What is CVE-2020-8617?
- CVE-2020-8617 is a high-severity vulnerability in Isc Bind, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2020-05-19.
- How severe is CVE-2020-8617?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-8617 known to be exploited?
- 34 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.