Home
» GitHub Advisories
» GHSA-9cwv-cppx-mqjm
Description
Impact
Using a malicious Connection header, an attacker with a proper authentication mechanism could start a privilege escalation towards the Kubernetes API Server, being able to exploit the cluster-admin Role bound to capsule-proxy.
Patches
Patch has been merged in the v0.2.1 release.
Workarounds
Upgrading is mandatory.
Basic information
Type
reviewed
Severity
high Advisory on GitHub
Open advisory ↗ Repository advisory
Open repository advisory ↗ Source code
Browse source ↗ Published (advisory)
2022-02-23 21:17:25 UTC
Updated
2023-02-03 05:06:26 UTC
GitHub reviewed
2022-02-23 21:17:25 UTC
NVD published
2022-02-22 20:15:00 UTC
EPSS Score
Score
Percentile
0.39%
59.50%
CVSS Scores
Base score
Version
Severity
Vector
8.8
3.1
—
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
CWEs
CWE id
Name
CWE-287
Improper Authentication
Affected packages (1)
Vulnerable version ranges and first patched releases as published by GitHub.
Ecosystem
Package
Vulnerable range
First patched
Vulnerable functions
go
github.com/clastix/capsule-proxy < 0.2.1
0.2.1
—
cvelogic
Threat Intelligence