CVE-2021-41973
MEDIUMCVSS 6.5/10EPSS 4.33%
Last modified
CVE-2021-41973 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. In Apache MINA, a specifically crafted, malformed HTTP request may cause the HTTP Header decoder to loop indefinitely. The decoder assumed that the HTTP Header begins at the beginning of the buffer and loops if there is more data than expected. EPSS estimates a 4.33% chance of exploitation in the next 30 days.
Description
In Apache MINA, a specifically crafted, malformed HTTP request may cause the HTTP Header decoder to loop indefinitely. The decoder assumed that the HTTP Header begins at the beginning of the buffer and loops if there is more data than expected. Please update MINA to 2.1.5 or greater.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apache | Mina | < 2.0.22 |
| Apache | Mina | >= 2.1.0, < 2.1.5 |
| Oracle | Banking Payments | 14.5 |
| Oracle | Banking Trade Finance Process Management | 14.5 |
| Oracle | Banking Treasury Management | 14.5 |
| Oracle | Communications Cloud Native Core Console | 1.9.0 |
| Oracle | Customer Management And Segmentation Foundation | 18.0 |
| Oracle | Customer Management And Segmentation Foundation | 19.0 |
| Oracle | Flexcube Universal Banking | >= 14.0, <= 14.3 |
| Oracle | Flexcube Universal Banking | 14.5 |
| Oracle | Fusion Middleware Common Libraries And Tools | 12.2.1.3.0 |
| Oracle | Fusion Middleware Common Libraries And Tools | 12.2.1.4.0 |
| Oracle | Fusion Middleware Common Libraries And Tools | 14.1.1.0.0 |
| Oracle | Oss Support Tools | 2.12.42 |
References
- http://www.openwall.com/lists/oss-security/2021/11/01/2Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/11/01/8Mailing List, Third Party Advisory
- https://lists.apache.org/thread.html/r0b907da9340d5ff4e6c1a4798ef4e79700a668657f27cca8a39e9250%40%3Cdev.mina.apache.org%3EMailing List, Patch, Vendor Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/11/01/2Mailing List, Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/11/01/8Mailing List, Third Party Advisory
- https://lists.apache.org/thread.html/r0b907da9340d5ff4e6c1a4798ef4e79700a668657f27cca8a39e9250%40%3Cdev.mina.apache.org%3EMailing List, Patch, Vendor Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-41973?
In Apache MINA, a specifically crafted, malformed HTTP request may cause the HTTP Header decoder to loop indefinitely. The decoder assumed that the HTTP Header begins at the beginning of the buffer and loops if there is more data than expected. Please update MINA to 2.1.5 or greater.
How severe is CVE-2021-41973?
CVE-2021-41973 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 4.33% probability of exploitation in the next 30 days.
How do I fix CVE-2021-41973?
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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