CVE-2020-8623

HIGHCVSS 7.5/10EPSS 6.35%

Last modified

CVE-2020-8623 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 6.35% chance of exploitation in the next 30 days.

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

Metrics

EPSS Probability
6.35%

92.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
IscBind>= 9.10.0, <= 9.11.21—
IscBind>= 9.12.1, <= 9.16.5—
IscBind>= 9.17.0, <= 9.17.3—
IscBind9.10.5S1
IscBind9.11.21S1
FedoraprojectFedora31—
FedoraprojectFedora32—
OpensuseLeap15.1—
OpensuseLeap15.2—
DebianDebian Linux9.0—
DebianDebian Linux10.0—
CanonicalUbuntu Linux16.04—
CanonicalUbuntu Linux18.04—
CanonicalUbuntu Linux20.04—
SynologyDns Server< 2.2.2-5027—
NetappSteelstore Cloud Integrated StorageAll versions—

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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. 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
How severe is CVE-2020-8623?
CVE-2020-8623 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 6.35% probability of exploitation in the next 30 days.
How do I fix CVE-2020-8623?
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

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Source: NVD / NIST