Steamworks game clients/servers using P2P authentication vulnerable to denial of service
Priority LOW 38CWE-20Published · Updated
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
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- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub.
Summary
Processing the raw `ValidateAuthTicketResponse_t` callback data panics when the `m_eAuthSessionResponse` field is `k_EAuthSessionResponseAuthTicketNetworkIdentityFailure`. This can lead to denial of service in game clients and servers using the `begin_authentication_session` API to authenticate players if a malicious game client sends an authentication ticket with a network identity that does not match that of the verifier.
Why it matters now
Fix Fixed steamworks (crates.io): 0.13.1
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | steamworks (crates.io) | before 0.13.1 | 0.13.1 | Patch available | GHSA-g588-cjg3-6g78 |
- steamworks (crates.io) Vendor— Affected before 0.13.1 Fixed in 0.13.1 Patch available GHSA-g588-cjg3-6g78
Remediation
- Fix · GHSA-g588-cjg3-6g78 steamworks (crates.io) Fixed in 0.13.1 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-g588-cjg3-6g78
References
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences