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GHSA-4wpp-w5r4-7v5v

CriticalCVSS 9.8 / 10
Published May 24, 2022·Last modified Aug 21, 2024
Affected Components(0)

No affected components available

Description

We've discovered a vulnerability in which attackers could forge HTTP requests to manipulate the charm data directory to access or delete anything on the server. This has been patched in https://github.com/charmbracelet/charm/commit/3c90668f955c7ce5ef721e4fc9faee7053232fd3 and is available in release v0.12.1. We recommend that all users running self-hosted charm instances update immediately.

This vulnerability was found in-house and we haven't been notified of any potential exploiters.

Additional notes

  • Encrypted user data uploaded to the Charm server is safe as Charm servers cannot decrypt user data. This includes filenames, paths, and all key-value data.
  • Users running the official Charm Docker images are at minimal risk because the exploit is limited to the containerized filesystem.

For more information

If you have any questions or comments about this advisory:


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Risk Scores
Base Score
9.8

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.

Threat Intelligence
9.0

Active exploitation in the wild has been confirmed. Immediate patching or mitigation is required.

EPSS
0.77%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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