Home
» GitHub Advisories
» GHSA-7c44-7j7v-w554
Description
A symbolic link following vulnerability in Buildkite Elastic CI for AWS versions prior to 6.7.1 and 5.22.5 allows the buildkite-agent user to change ownership of arbitrary directories via the PIPELINE_PATH variable in the fix-buildkite-agent-builds-permissions script.
Basic information
Type
reviewed
Severity
high Advisory on GitHub
Open advisory ↗ Repository advisory
—
Source code
Browse source ↗ Published (advisory)
2023-12-22 12:31:50 UTC
Updated
2024-01-03 21:45:44 UTC
GitHub reviewed
2024-01-03 21:45:42 UTC
NVD published
2023-12-22
EPSS Score
Score
Percentile
0.09%
25.54%
CVSS Scores
Base score
Version
Severity
Vector
7.8
3.1
—
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
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-59
Improper Link Resolution Before File Access ('Link Following')
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/buildkite/elastic-ci-stack-for-aws/v6 < 6.7.0
6.7.0
—
cvelogic
Threat Intelligence