Vulnerability Details : 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.
Products affected by CVE-2021-29258
- cpe:2.3:a:envoyproxy:envoy:1.14.6:*:*:*:*:*:*:*
- cpe:2.3:a:envoyproxy:envoy:1.15.3:*:*:*:*:*:*:*
- cpe:2.3:a:envoyproxy:envoy:1.16.2:*:*:*:*:*:*:*
- cpe:2.3:a:envoyproxy:envoy:1.17.1:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-29258
0.12%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 27 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-29258
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2021-29258
-
The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-29258
-
https://blog.envoyproxy.io
Envoy ProxyVendor Advisory
-
https://github.com/envoyproxy/envoy-setec/pull/230
Page not found · GitHub · GitHubBroken Link
-
https://github.com/envoyproxy/envoy/releases/tag/v1.14.0
Release v1.14.0 · envoyproxy/envoy · GitHubThird Party Advisory
-
https://github.com/envoyproxy/envoy/security/advisories/GHSA-xw4q-6pj2-5gfg
Crash when peer sends a TLS Alert with an unknown code · Advisory · envoyproxy/envoy · GitHubNot Applicable;Third Party Advisory
-
https://github.com/envoyproxy/envoy/security/advisories/GHSA-rqvq-hxw5-776j
Crash in HTTP2 when empty METADATA map triggers a reachable assertion. · Advisory · envoyproxy/envoy · GitHubThird Party Advisory
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