CVE-2023-50868
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- CVE-2023-50868
CVE Details
| Release Date: | 2024-02-13 |
Description
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.
See more information about CVE-2023-50868 from MITRE CVE dictionary and NIST NVD
CVSS v3.0 metrics
NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.
| Base Score: | 7.5 | Base Metrics: | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Access Vector: | Network | Attack Complexity: | Low |
| Privileges Required: | None | User Interaction: | None |
| Scope: | Unchanged | Confidentiality Impact: | None |
| Integrity Impact: | None | Availability Impact: | High |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 7 (bind) | ELSA-2024-3741 | 2024-06-10 |
| Oracle Linux version 7 (bind-dyndb-ldap) | ELSA-2024-3741 | 2024-06-10 |
| Oracle Linux version 7 (dhcp) | ELSA-2024-3741 | 2024-06-10 |
| Oracle Linux version 8 (bind) | ELSA-2024-1782 | 2024-04-11 |
| Oracle Linux version 8 (bind) | ELSA-2024-3271 | 2024-05-29 |
| Oracle Linux version 8 (bind9.16) | ELSA-2024-1781 | 2024-04-11 |
| Oracle Linux version 8 (dhcp) | ELSA-2024-1782 | 2024-04-11 |
| Oracle Linux version 8 (dhcp) | ELSA-2024-3271 | 2024-05-29 |
| Oracle Linux version 8 (dnsmasq) | ELSA-2024-1335 | 2024-03-15 |
| Oracle Linux version 8 (unbound) | ELSA-2024-0965 | 2024-02-28 |
| Oracle Linux version 9 (bind) | ELSA-2024-1789 | 2024-04-11 |
| Oracle Linux version 9 (bind) | ELSA-2024-2551 | 2024-05-07 |
| Oracle Linux version 9 (bind-dyndb-ldap) | ELSA-2024-1789 | 2024-04-11 |
| Oracle Linux version 9 (bind-dyndb-ldap) | ELSA-2024-2551 | 2024-05-07 |
| Oracle Linux version 9 (dnsmasq) | ELSA-2024-1334 | 2024-03-15 |
| Oracle Linux version 9 (unbound) | ELSA-2024-0977 | 2024-02-28 |
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