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githubGitHub Advisory DatabaseGHSA-J5C2-HM46-WP5C
HistoryJul 22, 2021 - 7:43 p.m.

Privilege escalation: all users can access Admin-level API keys

2021-07-2219:43:16
CWE-200
CWE-269
GitHub Advisory Database
github.com
188

6.5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:P/I:P/A:P

7.2 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

40.4%

Impact

An error in the implementation of the limits service in 4.0.0 allows all authenticated users (including contributors) to view admin-level API keys via the integrations API endpoint, leading to a privilege escalation vulnerability.

Ghost(Pro) has already been patched. Self-hosters are impacted if running Ghost a version between 4.0.0 and 4.9.4. Immediate action should be taken to secure your site - see patches & workarounds below.

It is highly recommended to regenerate all API keys after patching or applying the workaround below.

Patches

Fixed in 4.10.0, all 4.x sites should upgrade as soon as possible.

Workarounds

  • Disable all non-Administrator accounts to prevent API access.

For more information

If you have any questions or comments about this advisory:


Credits: Aden Yap Chuen Zhen, BAE Systems Applied Intelligence (Malaysia)

Affected configurations

Vulners
Node
github_advisory_databaseghostRange<4.10.0
CPENameOperatorVersion
ghostlt4.10.0

6.5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:P/I:P/A:P

7.2 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.001 Low

EPSS

Percentile

40.4%

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