CVE-2021-39206
published 2021-09-09CVE-2021-39206: Pomerium is an open source identity-aware access proxy. Envoy, which Pomerium is based on, contains two authorization related vulnerabilities CVE-2021-32777…
PriorityP348high8.6CVSS 3.1
AVNACLPRNUINSCCNIHAN
EPSS
1.41%
69.3th percentile
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.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| envoyproxy | envoy | < 1.16.5 | 1.16.5 |
| envoyproxy | envoy | — | — |
| envoyproxy | envoy | >= 1.17.0 < 1.17.4 | 1.17.4 |
| envoyproxy | envoy | >= 1.18.0 < 1.18.4 | 1.18.4 |
| github.com | pomerium_pomerium | >= 0.11.0 < 0.14.8 | 0.14.8 |
| github.com | pomerium_pomerium | >= 0.15.0 < 0.15.1 | 0.15.1 |
| pomerium | pomerium | — | — |
| pomerium | pomerium | >= 0.11.0 < 0.14.8 | 0.14.8 |
CVSS provenance
nvdv3.18.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N
ghsa8.3HIGH
osv8.3HIGH
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OSV
Incorrect Authorization with specially crafted requests
osv·2021-09-10·CVSS 8.3
CVE-2021-39206 [HIGH] Incorrect Authorization with specially crafted requests
Incorrect Authorization with specially crafted requests
Envoy, which Pomerium is based on, contains two authorization related vulnerabilities:
- [CVE-2021-32777](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32779): incorrectly transform a URL containing a `#fragment` element, causing a mismatch in path-prefix based authorization decisions.
- [CVE-2021-32779](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32777): incorrectly handle duplicate headers, dropping all but the last. This may lead to incorrect routing or authorization policy decisions.
### Impact
With specially crafted requests, incorrect authorization or routing decisions may be made by Pomerium.
### Patches
Pomerium v0.14.8 and v0.15.1 contain an upgraded envoy binary with these vulnerabilities patched.
GHSA
Incorrect Authorization with specially crafted requests
ghsa·2021-09-10·CVSS 8.3
CVE-2021-39206 [HIGH] CWE-863 Incorrect Authorization with specially crafted requests
Incorrect Authorization with specially crafted requests
Envoy, which Pomerium is based on, contains two authorization related vulnerabilities:
- [CVE-2021-32777](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32779): incorrectly transform a URL containing a `#fragment` element, causing a mismatch in path-prefix based authorization decisions.
- [CVE-2021-32779](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32777): incorrectly handle duplicate headers, dropping all but the last. This may lead to incorrect routing or authorization policy decisions.
### Impact
With specially crafted requests, incorrect authorization or routing decisions may be made by Pomerium.
### Patches
Pomerium v0.14.8 and v0.15.1 contain an upgraded envoy binary with these vulnerabilities patched.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://github.com/envoyproxy/envoy/security/advisories/GHSA-6g4j-5vrw-2m8hhttps://github.com/envoyproxy/envoy/security/advisories/GHSA-r222-74fw-jqr9https://github.com/pomerium/pomerium/security/advisories/GHSA-cfc2-wjcm-c8fmhttps://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJhttps://github.com/envoyproxy/envoy/security/advisories/GHSA-6g4j-5vrw-2m8hhttps://github.com/envoyproxy/envoy/security/advisories/GHSA-r222-74fw-jqr9https://github.com/pomerium/pomerium/security/advisories/GHSA-cfc2-wjcm-c8fmhttps://groups.google.com/g/envoy-announce/c/5xBpsEZZDfE/m/wD05NZBbAgAJ
2021-09-09
Published