CVE-2022-35923
v8n vulnerable to Inefficient Regular Expression Complexity
Impact
### Impact Inefficient regular expression complexity of `lowercase()` and `uppercase()` regex could lead to a denial of service attack. With a formed payload `'a' + 'a'.repeat(i) + 'A'`, only 32 characters payload could take 29443 ms time execution when testing `lowercase()`. The same issue happens with `uppercase()`. ### Patches v1.5.1 ### References [huntr.dev report](https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609) [_Regular Expression Denial of Service (ReDoS) and Catastrophic Backtracking_](https://snyk.io/blog/redos-and-catastrophic-backtracking/) ### For more information If you have any questions or comments about this advisory: * Open an issue in [v8n issues list](https://github.com/imbrn/v8n) * Email us at [brunodev02221@gmail.com](mailto:brunodev02221@gmail.com)
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | v8n | < 1.5.1 | 1.5.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| V8n Project | V8n | before 1.5.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9
- https://github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9
- https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609/
- https://github.com/advisories/GHSA-xrx9-gj26-5wx9
- https://nvd.nist.gov/vuln/detail/CVE-2022-35923