CVE-2023-20540
LOWCVSS 1.8/10
Last modified
CVE-2023-20540 is a low-severity vulnerability rated 1.8/10 on the CVSS scale. An observable timing discrepancy in the ASP could allow a privileged attacker to perform a brute-force attack against the hash message authentication code, allowing arbitrary message input, potentially leading to a loss of data integrity..
Description
An observable timing discrepancy in the ASP could allow a privileged attacker to perform a brute-force attack against the hash message authentication code, allowing arbitrary message input, potentially leading to a loss of data integrity.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| AMD | AMD Ryzen™ 3000 Series Desktop Processors | All versions |
| AMD | AMD Ryzen™ 5000 Series Desktop Processors | All versions |
| AMD | AMD Ryzen™ Threadripper™ 3000 Series Processors | All versions |
| AMD | AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors | All versions |
| AMD | AMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors | All versions |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2023-20540?
An observable timing discrepancy in the ASP could allow a privileged attacker to perform a brute-force attack against the hash message authentication code, allowing arbitrary message input, potentially leading to a loss of data integrity.
How severe is CVE-2023-20540?
CVE-2023-20540 has a CVSS score of 1.8/10 (LOW severity).
How do I fix CVE-2023-20540?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2023
- CVE-2023-2053A vulnerability, which was classified as critical, has been …8.8
- CVE-2023-20530Insufficient input validation of BIOS mailbox messages in SM…7.5
- CVE-2023-20531Insufficient bound checks in the SMU may allow an attacker t…7.5
- CVE-2023-20532Insufficient input validation in the SMU may allow an attack…5.3
- CVE-2023-20533Insufficient DRAM address validation in System Management Un…7.5
- CVE-2023-2054A vulnerability, which was classified as critical, was found…8.8
- CVE-2023-20548A Time-of-check time-of-use (TOCTOU) race condition in the A…7.8
- CVE-2023-2055A vulnerability has been found in Campcodes Advanced Online …6.1
- CVE-2023-20555Insufficient input validation in CpmDisplayFeatureSmm may al…7.8
- CVE-2023-20556 Insufficient validation of the IOCTL (Input Output Cont…5.5
- CVE-2023-20558 Insufficient control flow management in AmdCpmOemSmm may al…8.8
- CVE-2023-20559 Insufficient control flow management in AmdCpmGpioInitSmm…8.8
Are you affected by CVE-2023-20540?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST