vulnwire
6.5med

CVE-2019-9901

EnvoyProxy Envoy Missing HTTP URL path normalization

Also known as GHSA-2wmf-p7f8-w42h, GHSA-xcx5-93pw-jw2w

Published 7 y ago · modified 1 mo ago · JSON

CVSS
6.5
v3.0 · CNA
CISA KEV
No
not known exploited
EPSS
5.0%
percentile 92%
Public exploits
0
none known

Envoy 1.9.0 and before does not normalize HTTP URL paths. A remote attacker may craft a relative path, e.g., something/../admin, to bypass access control, e.g., a block on /admin. A backend server could then interpret the non-normalized path and provide an attacker access beyond the scope provided for by the access control policy.

Exploit prediction (EPSS)

4.95% probability of exploitation in the next 30 days, higher than 92% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
CNA3.06.5CVSS:3.0/AC:H/AV:N/A:L/C:L/I:L/PR:N/S:C/UI:N
CNA3.06.5CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
NVD3.010.0CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD2.07.5AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub3.010.0CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected packages

EcosystemPackageAffectedFixed in
gogithub.com/envoyproxy/envoy
<1.9.1
1.9.1

Classification

Weakness
  • CWE-706 Use of Incorrectly-Resolved Name or Reference

References

  • envoyproxy.io /docs/envoy/v1.9.1/intro/version_history · x_refsource_CONFIRM, x_transferred
  • github.com /envoyproxy/envoy/issues/6435 · x_refsource_CONFIRM, x_transferred
  • groups.google.com /forum/#%21topic/envoy-announce/VoHfnDqZiAM · x_refsource_CONFIRM, x_transferred
  • github.com /envoyproxy/envoy/security/advisories/GHSA-xcx5-93pw-jw2w · x_refsource_CONFIRM, x_transferred
  • nvd.nist.gov /vuln/detail/CVE-2019-9901 · advisory
  • github.com /envoyproxy/envoy/commit/e668e669677e52a00d99652b5a260d1cedafdfa8 · web
  • github.com /envoyproxy/envoy · package
  • github.com /envoyproxy/envoy/blob/main/security/postmortems/cve-2019-9900.md · web
  • groups.google.com /forum/#!topic/envoy-announce/VoHfnDqZiAM · web

Sources

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