High severity · published Sep 9, 2021
CVE-2021-39206
Pomerium is an open source identity-aware access proxy
8.6
CVSS
1.5%
EPSS
No
On KEV
Description
Pomerium is an open source identity-aware access proxy. Envoy, which Pomerium is based on, contains two authorization related vulnerabilities CVE-2021-32777 and CVE-2021-32779. This may lead to incorrect routing or authorization policy decisions. With specially crafted requests, incorrect authorization or routing decisions may be made by Pomerium. Pomerium v0.14.8 and v0.15.1 contain an upgraded envoy binary with these vulnerabilities patched. This issue can only be triggered when using path prefix based policy. Removing any such policies should provide mitigation.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.5% · higher than 73% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EN
Envoy · Envoyproxy
before 1.16.5; 1.17.0 before 1.17.4; 1.18.0 before 1.18.4; 1.19.0 · source: NVD
PO
Pomerium · Pomerium
0.11.0 before 0.14.8; 0.15.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-39206
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-39206
Third Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-6g4j-5vrw-2m8h
Third Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-r222-74fw-jqr9
Third Party Advisory
https://github.com/pomerium/pomerium/security/advisories/GHSA-cfc2-wjcm-c8fm
Not Applicable
https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ
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