VulnerabilityModified
CVE-2020-25017
Envoy through 1.15.0 only considers the first value when multiple header values are present for some HTTP headers.
HIGH 8.3EPSS 1.32%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.32%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Envoy through 1.15.0 only considers the first value when multiple header values are present for some HTTP headers. Envoy’s setCopy() header map API does not replace all existing occurences of a non-inline header.
- CVSS 3.1
- 8.3 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
- EPSS
- 1.32% probability · 69th percentile
- CISA KEV
- Not listed
- Affected
- envoyproxy/envoy
- Source
- cve@mitre.org
References
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-2v25-cjjq-5f4wExploit, Third Party Advisory
- https://groups.google.com/forum/#%21forum/envoy-security-announce
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-2v25-cjjq-5f4wExploit, Third Party Advisory
- https://groups.google.com/forum/#%21forum/envoy-security-announce
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.