CVE-2022-38178
By spoofing the target resolver with responses that have a malformed EdDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources.
- Affected products
- Alt Linux, Almalinux, Astra Linux, Bind, Bind Server, Centos, Ibm Aix, Linuxmint
- Isc Bind
- ≤ 9.9.13, 9.10.8, 9.16.32, 9.11.3, 9.11.5, 9.11.6, 9.11.7, 9.11.8, 9.11.12, 9.11.14-s1, 9.11.19-s1, 9.11.21, 9.11.27, 9.11.29, 9.11.35, 9.11.37, 9.16.8, 9.16.11, 9.16.13, 9.16.21
- CVSS 3.1
- 7.5 HIGH
- EPSS
- 2.5% (83th percentile)
- Weakness
- CWE-401
- NVD status
- Modified
- Published
- 2022-09-21
Fix
Upgrade to the patched release most closely related to your current version of BIND: BIND 9.16.33, BIND 9.18.7, BIND 9.19.5, or for BIND Supported Preview Edition (a special feature preview branch of BIND provided to eligible ISC support customers): BIND 9.16.33-S1.
Workaround
Disable the following algorithms in your configuration using the disable-algorithms option: ED25519, ED448. Note that this causes zones signed with these algorithms to be treated as insecure.
No indexed exploits for CVE-2022-38178 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2022-38178 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.