CVE-2021-33503

Katalog CVE

CVSS 7.5 · High EPSS 3,3%

Kerentanan Uncontrolled Resource Consumption pada python urllib3, fedoraproject fedora +3 lainnya. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ characters in the authority component, the authority regular expression exhibits catastrophic backtracking, causing a denial of service if a URL were passed as a parameter or redirected to via an HTTP redirect.

Rincian

Terbit di NVD

29 Juni 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

7.5 (High), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-400: Uncontrolled Resource Consumption

EPSS (30 hari)

3,3% peluang dieksploitasi; lebih tinggi dari 88,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/urllib3/urllib3/commit/2d4a3fee6de2fa45eb82169361918f759269b4ec patch · advisory pihak ketiga
• https://www.oracle.com/security-alerts/cpuoct2021.html patch · advisory pihak ketiga
• https://github.com/advisories/GHSA-q2q7-5pp4-w6pg advisory pihak ketiga
• https://security.gentoo.org/glsa/202107-36 advisory pihak ketiga
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6SCV7ZNAHS3E6...
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FMUGWEAUYGGHT...