Vulnerability in Whisperfish Libsignal-Service-Rs
CVE-2025-24903
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, any contact may forge a sync message, impersonating another device of the local user. The origin of sync messages is not checked. Patched libsignal-service can be found after commit 82d70f6720e762898f34ae76b0894b0297d9b2f8. The `Metadata` struct contains an additional `was_encrypted` field, which breaks the API, but should be easily resolvable. No known workarounds are available.
EPSS: 0.002 (7.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N.
Affected products
- Whisperfish Libsignal-service-rs — versions < 82d70f6720e762898f34ae76b0894b0297d9b2f8
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-24903?
- CVE-2025-24903 is a high-severity vulnerability in Whisperfish Libsignal-Service-Rs, classified under Insufficient Verification of Data Authenticity. CVSS score: 8.5/10. Published 2025-02-13.
- How severe is CVE-2025-24903?
- High severity. CVSS v3 base score is 8.5 out of 10.