GHSA-58j9-j2fj-v8f4
SurrealDB vulnerable to Uncontrolled CPU Consumption via WebSocket Interface
- Severity
- 7.5 / 10
- High · CVSS 3.1
- Exploit chance (EPSS)
- —
- No score published
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- —
- Not classified
- Fix
1.1.0- Upgrade surrealdb to this version or later
Description
SurrealDB depends on the tungstenite and tokio-tungstenite crates used by the axum crate, which handles connections to the SurrealDB WebSocket interface. On versions before 0.20.1, the tungstenite crate presented an issue which allowed the parsing of HTTP headers during the client handshake to continuously consume high CPU when the headers were very long. All affected crates have been updated in SurrealDB version 1.1.0.
From the original advisory for CVE-2023-43669: "The Tungstenite crate through 0.20.0 for Rust allows remote attackers to cause a denial of service (minutes of CPU consumption) via an excessive length of an HTTP header in a client handshake. The length affects both how many times a parse is attempted (e.g., thousands of times) and the average amount of data for each parse attempt (e.g., millions of bytes)."
Impact
A remote unauthenticated attacker may cause a SurrealDB server that exposes its WebSocket interface to consume high CPU by sending an HTTP request with a very long header to the WebSocket interface, potentially leading to denial of service.
Patches
- Version 1.1.0 and later are not affected by this issue.
Workarounds
Users unable to update may be able to limit access to the WebSocket interface (i.e. the /rpc endpoint) via reverse proxy if not in use or only used by a limited number of trusted clients. Alternatively, a reverse proxy may be used to strip or truncate request headers exceeding a reasonable length before reaching the SurrealDB server.
References
Affected versions
crates.io
| Package | Vulnerable | Fixed in |
|---|---|---|
| surrealdb | < 1.1.0 |
1.1.0 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
surrealdb crates.io → 1.1.0
- cargo
cargo update -p surrealdb --precise 1.1.0
Severity breakdown
CVSS 3.1 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
References
Advisories
Packages
Other links
Timeline
- Published
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-8rw6-p7m8-63jp SurrealDB: Array element-level (field.*) SELECT permissions leak denied elements to record users | High | Also affects surrealdb |
| GHSA-848m-r628-vrxw SurrealDB: Custom API route lets authenticated callers override namespace/database scope via URL path | High | Also affects surrealdb |
| GHSA-m3c3-78fh-w3w7 SurrealDB allows bypass of deny-net flags via DNS resolution | High | Also affects SurrealDB |
| GHSA-whwg-vh4f-pmmf SurrealDB: Edge PERMISSIONS FOR delete bypassed when a connected node is deleted | Medium | Also affects surrealdb |
| GHSA-fwg2-gr34-q3w8 SurrealDB: ES512 silently downgraded to ES384 due to jsonwebtoken crate limitation | Medium | Also affects surrealdb |
| GHSA-c8jx-96c9-8xrp SurrealDB: Field-level SELECT permissions bypassed via indexed COUNT fast paths | Medium | Also affects surrealdb |
| GHSA-wp87-mgvq-5j93 SurrealDB: USE NS/DB implicit creation bypasses DEFINE authorization | Medium | Also affects surrealdb |
| GHSA-97vg-427p-8hx5 SurrealDB: Port-specific --deny-net rules silently bypassed on HTTP redirect | Medium | Also affects surrealdb |
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