Summaryinfo

A vulnerability was found in whisperfish libsignal-service-rs. It has been declared as critical. The impacted element is an unknown function. Such manipulation of the argument was_encrypted leads to improper authentication. This vulnerability is uniquely identified as CVE-2025-24904. The attack can be launched remotely. No exploit exists. It is best practice to apply a patch to resolve this issue. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Detailsinfo

A vulnerability, which was classified as critical, has been found in whisperfish libsignal-service-rs (version now known). Affected by this issue is some unknown processing. The manipulation of the argument was_encrypted with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, integrity, and availability. CVE summarizes:

libsignal-service-rs is a Rust version of the libsignal-service-java library which implements the core functionality to communicate with Signal servers. Prior to commit 82d70f6720e762898f34ae76b0894b0297d9b2f8, plaintext content envelopes could be injected by a server or a malicious client, and may have been able to bypass the end-to-end encryption and authentication. The vulnerability is fixed per 82d70f6720e762898f34ae76b0894b0297d9b2f8. The `Metadata` struct contains an additional `was_encrypted` field, which breaks the API, but should be easily resolvable. No known workarounds are available.

The advisory is available at github.com. This vulnerability is handled as CVE-2025-24904 since 01/27/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

Applying the patch 82d70f6720e762898f34ae76b0894b0297d9b2f8 is able to eliminate this problem.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• whisperfish

Name

• libsignal-service-rs

Website

• Product: https://github.com/whisperfish/libsignal-service-rs/

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