CVE-2021-29258
HIGHCVSS 7.5/10EPSS 1.74%
Last modified
CVE-2021-29258 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered in Envoy 1.14.0. There is a remotely exploitable crash for HTTP2 Metadata, because an empty METADATA map triggers a Reachable Assertion.. EPSS estimates a 1.74% chance of exploitation in the next 30 days.
Description
An issue was discovered in Envoy 1.14.0. There is a remotely exploitable crash for HTTP2 Metadata, because an empty METADATA map triggers a Reachable Assertion.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Envoyproxy | Envoy | 1.14.6 |
| Envoyproxy | Envoy | 1.15.3 |
| Envoyproxy | Envoy | 1.16.2 |
| Envoyproxy | Envoy | 1.17.1 |
References
- https://blog.envoyproxy.ioVendor Advisory
- https://github.com/envoyproxy/envoy/releases/tag/v1.14.0Third Party Advisory
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-xw4q-6pj2-5gfgNot Applicable, Third Party Advisory
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-rqvq-hxw5-776jThird Party Advisory
- https://blog.envoyproxy.ioVendor Advisory
- https://github.com/envoyproxy/envoy/releases/tag/v1.14.0Third Party Advisory
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-xw4q-6pj2-5gfgNot Applicable, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-29258?
An issue was discovered in Envoy 1.14.0. There is a remotely exploitable crash for HTTP2 Metadata, because an empty METADATA map triggers a Reachable Assertion.
How severe is CVE-2021-29258?
CVE-2021-29258 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.74% probability of exploitation in the next 30 days.
How do I fix CVE-2021-29258?
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 2021
- CVE-2021-29250BTCPay Server through 1.0.7.0 suffers from a Stored Cross Si…5.4
- CVE-2021-29251BTCPay Server before 1.0.7.1 mishandles the policy setting i…6.5
- CVE-2021-29252RSA Archer before 6.9 SP1 P1 (6.9.1.1) contains a stored XSS…5.4
- CVE-2021-29253The Tableau integration in RSA Archer 6.4 P1 (6.4.0.1) throu…5.5
- CVE-2021-29255MicroSeven MYM71080i-B 2.0.5 through 2.0.20 devices send adm…7.5
- CVE-2021-29256. The Arm Mali GPU kernel driver allows an unprivileged user…8.8
- CVE-2021-29261The unofficial Svelte extension before 104.8.0 for Visual St…7.8
- CVE-2021-29262When starting Apache Solr versions prior to 8.8.2, configure…7.5
- CVE-2021-29263In JetBrains IntelliJ IDEA 2020.3.3, local code execution wa…7.8
- CVE-2021-29264An issue was discovered in the Linux kernel through 5.11.10.…5.5
- CVE-2021-29265An issue was discovered in the Linux kernel before 5.11.7. u…4.7
- CVE-2021-29266An issue was discovered in the Linux kernel before 5.11.9. d…7.8
Are you affected by CVE-2021-29258?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST