Skip to content

SSRF in adminer

High severity GitHub Reviewed Published Feb 10, 2021 in vrana/adminer • Updated Feb 1, 2023

Package

composer vrana/adminer (Composer)

Affected versions

< 4.7.9

Patched versions

4.7.9

Description

Impact

Users of Adminer versions bundling all drivers (e.g. adminer.php) are affected.

Patches

Patched by ccd2374b, included in version 4.7.9.

Workarounds

  • Use a single driver version (e.g. adminer-mysql.php).
  • Protect access to Adminer also by other means, e.g. by HTTP password, IP address limiting or by OTP plugin.

References

https://github.com/vrana/adminer/files/5957311/Adminer.SSRF.pdf

For more information

If you have any questions or comments about this advisory:

  • Comment at ccd2374b.

References

@vrana vrana published to vrana/adminer Feb 10, 2021
Reviewed Feb 11, 2021
Published to the GitHub Advisory Database Feb 11, 2021
Published by the National Vulnerability Database Feb 11, 2021
Last updated Feb 1, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(99th percentile)

Weaknesses

Server-Side Request Forgery (SSRF)

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Learn more on MITRE.

CVE ID

CVE-2021-21311

GHSA ID

GHSA-x5r2-hj5c-8jx6

Source code

No known source code

Credits

Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.