F5-K000139084
First published: Thu Mar 28 2024(Updated: )
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 Software | Affected Version | How to fix |
|---|---|---|
| F5 BIG-IP and BIG-IQ Centralized Management | >=17.1.0<=17.1.1 | 17.1.2 |
| F5 BIG-IP and BIG-IQ Centralized Management | >=16.1.0<=16.1.5 | |
| F5 BIG-IP and BIG-IQ Centralized Management | >=15.1.0<=15.1.10 |
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Reference Links
Frequently Asked Questions
What is the severity of F5-K000139084?
The severity of F5-K000139084 is high due to its potential to cause a denial of service through resource exhaustion.
How do I fix F5-K000139084?
To fix F5-K000139084, upgrade F5 BIG-IP to the latest versions 17.1.2, 16.1.5, or 15.1.10 as recommended by F5.
What versions of F5 BIG-IP are affected by F5-K000139084?
F5-K000139084 affects BIG-IP versions 17.1.0 to 17.1.1, 16.1.0 to 16.1.5, and 15.1.0 to 15.1.10.
What is the nature of the vulnerability in F5-K000139084?
F5-K000139084 is related to a flaw in DNSSEC responses that can be exploited for CPU consumption through NSEC3 processing.
Who can exploit the vulnerability F5-K000139084?
Remote attackers can exploit the vulnerability F5-K000139084 by launching a random subdomain attack.
- agent/references
- agent/severity
- agent/type
- agent/description
- agent/first-publish-date
- agent/event
- agent/last-modified-date
- agent/softwarecombine
- agent/source
- agent/tags
- collector/f5-advisory
- source/F5
- alias/CVE-2023-50868
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/f5
- canonical/f5 big-ip and big-iq centralized management
- version/f5 big-ip and big-iq centralized management/17.1.0
- version/f5 big-ip and big-iq centralized management/17.1.1
- version/f5 big-ip and big-iq centralized management/16.1.0
- version/f5 big-ip and big-iq centralized management/16.1.5
- version/f5 big-ip and big-iq centralized management/15.1.0
- version/f5 big-ip and big-iq centralized management/15.1.10