High severity · published May 20, 2021
CVE-2021-29258
An issue was discovered in Envoy 1.14.0
7.5
CVSS
1.8%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 78% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EN
Envoy · Envoyproxy
1.14.6; 1.15.3; 1.16.2; 1.17.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-29258
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-29258
Vendor Advisory
https://blog.envoyproxy.io
Broken Link
https://github.com/envoyproxy/envoy-setec/pull/230
Third Party Advisory
https://github.com/envoyproxy/envoy/releases/tag/v1.14.0
Not Applicable
https://github.com/envoyproxy/envoy/security/advisories/GHSA-xw4q-6pj2-5gfg
Third Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-rqvq-hxw5-776j
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