CVE-2022-2906: high-severity vulnerability in ISC BIND9
Memory leaks in code handling Diffie-Hellman key exchange via TKEY RRs (OpenSSL 3.0.0+ only)
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 2.0%
An attacker can leverage this flaw to gradually erode available memory to the point where named crashes for lack of resources. Upon restart the attacker would have to begin again, but nevertheless there is the potential to deny service.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
ISC · BIND9Related CVEs — ISC BIND9
In the same product, most dangerous first.
CVE-2020-8617HIGHA logic error in code which checks TSIG validity can be used to trigger an assertion failure in tsig.cEPSS 93.3%CVE-2021-25216HIGHA second vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attackEPSS 83.0%CVE-2020-8625HIGHA vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attackEPSS 64.2%CVE-2021-25215HIGHAn assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itselfEPSS 11.7%CVE-2021-25219MEDIUMLame cache can be abused to severely degrade resolver performanceEPSS 11.2%CVE-2020-8616HIGHBIND does not sufficiently limit the number of fetches performed when processing referralsEPSS 10.9%