CVE-2021-29258 — HIGH (7.5)

Vulnerability 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.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Envoyproxy	Envoy	1.14.6

Related Weaknesses (CWE)

CWE-617

References

https://blog.envoyproxy.ioVendor Advisory
https://github.com/envoyproxy/envoy-setec/pull/230Broken Link
https://github.com/envoyproxy/envoy/releases/tag/v1.14.0Third Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-xw4q-6pj2-5gfgNot ApplicableThird 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-setec/pull/230Broken Link
https://github.com/envoyproxy/envoy/releases/tag/v1.14.0Third Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-xw4q-6pj2-5gfgNot ApplicableThird Party Advisory

FAQ

What is CVE-2021-29258?

CVE-2021-29258 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-29258?

Check the references section above for vendor advisories and patch information. Affected products include: Envoyproxy Envoy.