CVE-2021-44759
HIGHCVSS 8.1/10EPSS 1.51%
Last modified
CVE-2021-44759 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. Improper Authentication vulnerability in TLS origin validation of Apache Traffic Server allows an attacker to create a man in the middle attack. This issue affects Apache Traffic Server 8.0.0 to 8.1.0.. EPSS estimates a 1.51% chance of exploitation in the next 30 days.
Description
Improper Authentication vulnerability in TLS origin validation of Apache Traffic Server allows an attacker to create a man in the middle attack. This issue affects Apache Traffic Server 8.0.0 to 8.1.0.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apache | Traffic Server | >= 8.0.0, <= 8.1.0 |
| Debian | Debian Linux | 10.0 |
| Debian | Debian Linux | 11.0 |
References
- https://lists.apache.org/thread/zblwzcfs9ryhwjr89wz4osw55pxm6dx6Mailing List, Vendor Advisory
- https://www.debian.org/security/2022/dsa-5153Third Party Advisory
- https://lists.apache.org/thread/zblwzcfs9ryhwjr89wz4osw55pxm6dx6Mailing List, Vendor Advisory
- https://www.debian.org/security/2022/dsa-5153Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-44759?
Improper Authentication vulnerability in TLS origin validation of Apache Traffic Server allows an attacker to create a man in the middle attack. This issue affects Apache Traffic Server 8.0.0 to 8.1.0.
How severe is CVE-2021-44759?
CVE-2021-44759 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.51% probability of exploitation in the next 30 days.
How do I fix CVE-2021-44759?
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.
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Are you affected by CVE-2021-44759?
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Scan your code nowSource: NVD / NIST