CVE-2023-49079 - Improper Verification of Cryptographic Signature

Severity

75%

Complexity

39%

Confidentiality

60%

Misskey is an open source, decentralized social media platform. Misskey's missing signature validation allows arbitrary users to impersonate any remote user. This issue has been patched in version 2023.11.1-beta.1.

CVSS 3.1 Base Score 7.5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N).

Demo Examples

Improper Verification of Cryptographic Signature

CWE-347

In the following code, a JarFile object is created from a downloaded file.


               
JarFile jf = new JarFile(f);

The JAR file that was potentially downloaded from an untrusted source is created without verifying the signature (if present). An alternate constructor that accepts a boolean verify parameter should be used instead.

Overview

First reported 1 year ago

2023-11-29 19:15:00

Last updated 1 year ago

2023-12-05 17:26:00

Affected Software

Misskey

References

https://github.com/misskey-dev/misskey/security/advisories/GHSA-3f39-6537-3cgc

https://github.com/misskey-dev/misskey/security/advisories/GHSA-3f39-6537-3cgc

Mitigation, Vendor Advisory

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