CVE-2023-26103
MEDIUM severity · CVSS 5.3 · CWE-1333
5.3CVSS MEDIUM
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactLow
Exploit probability (EPSS)1%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://github.com/denoland/deno/commit/cf06a7c7e672880e1b38598fe445e2c50b4a9d06 ↗
Additional information
- NVD record
- https://github.com/denoland/deno/commit/cf06a7c7e672880e1b38598fe445e2c50b4a9d06Patch
- https://github.com/denoland/deno/pull/17722Patch
- https://github.com/denoland/deno/blob/2b247be517d789a37e532849e2e40b724af0918f/ext/http/01_http.js%23L395-L409
- https://github.com/denoland/deno/releases/tag/v1.31.0
- https://security.snyk.io/vuln/SNYK-RUST-DENO-3315970Advisory