🛡️ CVE-2023-50868 — active-iq-unified-manager
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.
How this vulnerability can be exploited
This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.
Weakness class
CVE-2023-50868 is classified as CWE-400: Uncontrolled Resource Consumption. A request can consume memory, CPU or storage without limit, exhausting capacity for everyone else.
Affected software
CVE-2023-50868 is recorded against 8 packages.
- active-iq-unified-manager
- bind (from 9.19.0 up to 9.19.21)
- bootstrap-os
- debian-linux
- enterprise-linux
- fedora
- hci-baseboard-management-controller
- recursor (from 5.0.0 up to 5.0.2)
Timeline and source
Published on 14 February 2024 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from NVD.
References
www.openwall.com
www.openwall.com
access.redhat.com
bugzilla.suse.com
datatracker.ietf.org
docs.powerdns.com
gitlab.nic.cz
kb.isc.org
lists.debian.org
lists.debian.org
lists.fedoraproject.org
lists.fedoraproject.org
lists.fedoraproject.org
lists.fedoraproject.org
lists.fedoraproject.org
CVE-2023-50868 on other distributions
Each distribution ships its own build and its own fixed version. Pick the one you run:
Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| active-iq-unified-manager | — | — |
| bind | 9.19.0 | 9.19.21 |
| bootstrap-os | — | — |
| debian-linux | — | — |
| enterprise-linux | — | — |
| fedora | — | — |
| hci-baseboard-management-controller | — | — |
| recursor | 5.0.0 | 5.0.2 |
References
Similar Threats
- High CVE-2022-1259
- High CVE-2022-1319
- High CVE-2022-1199
- High CVE-2022-2097
- Medium CVE-2022-2056
More CVE 2023 advisories
Browse all of CVE 2023 in the advisory index.
Exploit Protection
Are you running active-iq-unified-manager?
CVE-2023-50868 carries CVSS 7.5 High rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.
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