Vulnerability · Published Sep 21, 2022 · Assigned by isc
CVE-2022-2906Memory leaks in code handling Diffie-Hellman key exchange via TKEY RRs (OpenSSL 3.0.0+ only)
High 7.5
In plain English
A high-severity memory leak in BIND9 from ISC. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.0% (higher than 81% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)2.0%top 18.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | bind | 9.18.7-r0 | ALPINE-CVE-2022-2906 |
| Alpine:v3.21 | bind | 9.18.7-r0 | ALPINE-CVE-2022-2906 |
| Alpine:v3.22 | bind | 9.18.7-r0 | ALPINE-CVE-2022-2906 |
| Alpine:v3.23 | bind | 9.18.7-r0 | ALPINE-CVE-2022-2906 |
| Alpine:v3.24 | bind | 9.18.7-r0 | ALPINE-CVE-2022-2906 |
| Debian:12 | bind9 | 1:9.18.7-1 | DEBIAN-CVE-2022-2906 |
| Debian:13 | bind9 | 1:9.18.7-1 | DEBIAN-CVE-2022-2906 |
| Debian:14 | bind9 | 1:9.18.7-1 | DEBIAN-CVE-2022-2906 |
| Ubuntu:22.04:LTS | bind9 | 1:9.18.1-1ubuntu1.2 | UBUNTU-CVE-2022-2906 |
| Ubuntu:22.04:LTS | bind9 | 1:9.18.1-1ubuntu1.2 | USN-5626-1 |
Affected products (as reported)
Weakness: CWE-401 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H