GHSA-xr9w-x6gw-c9mj
Duplicate advisory: Deno vulnerable to Regular Expression Denial of Service
- Severity
- 7.5 / 10
- High · CVSS 3.1
- Exploit chance (EPSS)
- —
- No score published
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-1333 Inefficient Regular Expression Complexity
- Fix
1.31.0- Upgrade deno to this version or later
Description
Duplicate Advisory
This advisory has been withdrawn because it is a duplicate of GHSA-jc97-h3h9-7xh6. This link is maintained to preserve external references.
Original Description
Versions of the package deno before 1.31.0 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the upgradeWebSocket function, which contains regexes in the form of /s*,s*/, used for splitting the Connection/Upgrade header. A specially crafted Connection/Upgrade header can be used to significantly slow down a web socket server. This issue has been patched in version 1.31.0.
Affected versions
crates.io
| Package | Vulnerable | Fixed in |
|---|---|---|
| deno | < 1.31.0 |
1.31.0 |
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.
deno crates.io → 1.31.0
- cargo
cargo update -p deno --precise 1.31.0
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
Weakness
CWE-1333: Inefficient Regular Expression Complexity
The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.
How to prevent it
- Architecture and Design: Use regular expressions that do not support backtracking, e.g. by removing nested quantifiers.
- System Configuration: Set backtracking limits in the configuration of the regular expression implementation, such as PHP's pcre.backtrack_limit. Also consider limits on execution time for the process.
- Implementation: Do not use regular expressions with untrusted input. If regular expressions must be used, avoid using backtracking in the expression.
- Implementation: Limit the length of the input that the regular expression will process.
References
Advisories
Packages
Other links
Timeline
- Published
- Last updated by the source
- Withdrawn
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-x2qc-cmh9-f4hf Deno: Denial of service via non-ASCII bytes in WebSocket response headers | Medium | Also affects deno |
| GHSA-8xpq-cjcf-3wh9 Deno: Permission Bypass via Unicode Normalization Mismatch on macOS (APFS) | High | Also affects deno |
| GHSA-968w-xfqw-vp9q Deno: BYONM module resolution allows `package.json` main path traversal to bypass `--allow-read` restrictions | Medium | Also affects deno |
| GHSA-v8fw-85r8-5m23 Deno: Node TCPWrap numeric hostname aliases bypass --deny-net resolved-IP deny checks | Medium | Also affects deno |
| GHSA-9xg4-qhm4-g43w Deno: Miller-Rabin Primality Test Allows Zero Rounds | High | Also affects deno |
| GHSA-7xh3-mhg9-jcw8 Deno: Command Injection via spawnSync & spawn on Windows | High | Also affects deno |
| GHSA-4c8g-jvcx-v4hv Deno: process.loadEnvFile() bypasses env permission checks and mutates process.env with only read access | Medium | Also affects deno |
| GHSA-83pc-3rw9-qpwj Deno: WebSocket API sandbox bypass via missing post-DNS check | Medium | Also affects deno |
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