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redhatcveRedhat.comRH:CVE-2023-35941
HistoryJul 26, 2023 - 4:47 p.m.

CVE-2023-35941

2023-07-2616:47:36
redhat.com
access.redhat.com
94
envoy
credentials
permanent validity
oauth2 filter

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

0.001 Low

EPSS

Percentile

43.3%

A flaw was found in Envoy, where a malicious client can construct credentials with permanent validity in a specific scenario. This issue is caused by some rare scenarios, such as the combination of host and expiration time, in which the HMAC payload can always be valid in the OAuth2 filter’s HMAC check.

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

0.001 Low

EPSS

Percentile

43.3%