Denial of Service in uap-core

TRUNG BÌNH 5.3CVE-2021-21317 · GHSA-p4pj-mg4r-x6v4 · Công bố 16/02/2021 · cập nhật 17/06/2026

Tóm tắt nhanh

CVE-2021-21317 là lỗ hổng mức TRUNG BÌNH (CVSS 5.3) ảnh hưởng uap-core (uap-core project), uap-core.
Xác suất bị khai thác trong 30 ngày tới (EPSS): 2.5%, cao hơn 84.9% các lỗ hổng khác.
Cách xử lý: cập nhật lên 0.11.0 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
uap-core uap-core_project	`< 0.11.0`	`0.11.0`
uap-core npm	`< 0.11.0`	`0.11.0`

Mô tả

Impact

Some regexes are vulnerable to regular expression denial of service (REDoS) due to overlapping capture groups. This allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to maliciously crafted long strings.

Patches

Please update uap-core to >= v0.11.0

Downstream packages such as uap-python, uap-ruby etc which depend upon uap-core follow different version schemes.

Mô tả của NVD

uap-core in an open-source npm package which contains the core of BrowserScope's original user agent string parser. In uap-core before version 0.11.0, some regexes are vulnerable to regular expression denial of service (REDoS) due to overlapping capture groups. This allows remote attackers to overload a server by setting the User-Agent header in an HTTP(S) request to maliciously crafted long strings. This is fixed in version 0.11.0. Downstream packages such as uap-python, uap-ruby etc which depend upon uap-core follow different version schemes.