CVE-2021-39206
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data exposure.
- Exploit odds
- 1.5% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 1.5% in the next 30 days (EPSS).
- Severity: 8.6 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 1.5% · EPSS, next 30 days
- Weakness
- CWE-863 · Incorrect authorization
- Record status
- Modified
Affected
- Envoyproxy Envoy < 1.16.5
- Envoyproxy Envoy < 1.17.4
- Envoyproxy Envoy < 1.18.4
- Envoyproxy Envoy 1.19.0
- Pomerium < 0.14.8
- Pomerium 0.15.0
Attack profile CVSS 3.1 · 8.6
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2021-39206.md and follow it. Check whether this project is affected by CVE-2021-39206. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-6g4j-5vrw-2m8h
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-r222-74fw-jqr9
- https://github.com/pomerium/pomerium/security/advisories/GHSA-cfc2-wjcm-c8fm
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-6g4j-5vrw-2m8h
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-r222-74fw-jqr9
- https://github.com/pomerium/pomerium/security/advisories/GHSA-cfc2-wjcm-c8fm
References
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-6g4j-5vrw-2m8h
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-r222-74fw-jqr9
- https://github.com/pomerium/pomerium/security/advisories/GHSA-cfc2-wjcm-c8fm
- https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-6g4j-5vrw-2m8h
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-r222-74fw-jqr9
- https://github.com/pomerium/pomerium/security/advisories/GHSA-cfc2-wjcm-c8fm
- https://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ