CVE-2023-50868
published 2024-02-14CVE-2023-50868: The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU…
high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance is skipped) allows remote attackers to cause a denial of service (CPU consumption for SHA-1 computations) via DNSSEC responses in a random subdomain attack, aka the "NSEC3" issue. The RFC 5155 specification implies that an algorithm must perform thousands of iterations of a hash function in certain situations.
Affected
60 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cz.nic | knot-resolver | >= 0 < 5.6.0-1+deb12u1 | 5.6.0-1+deb12u1 |
| cz.nic | knot-resolver | >= 0 < 5.7.1-1 | 5.7.1-1 |
| cz.nic | knot-resolver | >= 0 < 5.7.1-1 | 5.7.1-1 |
| debian | bind9 | < bind9 1:9.18.24-1 (bookworm) | bind9 1:9.18.24-1 (bookworm) |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | dnsjava | < bind9 1:9.18.24-1 (bookworm) | bind9 1:9.18.24-1 (bookworm) |
| debian | dnsmasq | < bind9 1:9.18.24-1 (bookworm) | bind9 1:9.18.24-1 (bookworm) |
| debian | knot-resolver | < bind9 1:9.18.24-1 (bookworm) | bind9 1:9.18.24-1 (bookworm) |
| debian | pdns-recursor | < bind9 1:9.18.24-1 (bookworm) | bind9 1:9.18.24-1 (bookworm) |
| debian | systemd | < bind9 1:9.18.24-1 (bookworm) | bind9 1:9.18.24-1 (bookworm) |
| debian | unbound | < bind9 1:9.18.24-1 (bookworm) | bind9 1:9.18.24-1 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| isc | bind | >= 9.0.0 < 9.16.48 | 9.16.48 |
| isc | bind | >= 9.18.0 < 9.18.24 | 9.18.24 |
| isc | bind | >= 9.18.11 < 9.18.24 | 9.18.24 |
| isc | bind | >= 9.19.0 < 9.19.21 | 9.19.21 |
| isc | bind | >= 9.9.3 < 9.16.48 | 9.16.48 |
| isc | bind9 | >= 0 < 1:9.16.48-1 | 1:9.16.48-1 |
| isc | bind9 | >= 0 < 1:9.18.24-1 | 1:9.18.24-1 |
| isc | bind9 | >= 0 < 1:9.19.21-1 | 1:9.19.21-1 |
| isc | bind9 | >= 0 < 1:9.19.21-1 | 1:9.19.21-1 |
| isc | bind9 | >= 0 < 1:9.16.48-0ubuntu0.20.04.1 | 1:9.16.48-0ubuntu0.20.04.1 |
| isc | bind9 | >= 0 < 1:9.18.18-0ubuntu0.22.04.2 | 1:9.18.18-0ubuntu0.22.04.2 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
osv7.5HIGH