CVE-2021-29431

Katalog CVE

CVSS 6.5 · Medium EPSS 1,2%

Kerentanan Improper Input Validation pada matrix sydent. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

Sydent is a reference Matrix identity server. Sydent can be induced to send HTTP GET requests to internal systems, due to lack of parameter validation or IP address blacklisting. It is not possible to exfiltrate data or control request headers, but it might be possible to use the attack to perform an internal port enumeration. This issue has been addressed in in 9e57334, 8936925, 3d531ed, 0f00412. A potential workaround would be to use a firewall to ensure that Sydent cannot reach internal HTTP resources.

Rincian

Terbit di NVD

15 April 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-20: Improper Input Validation
CWE-918: Server-Side Request Forgery (SSRF)

EPSS (30 hari)

1,2% peluang dieksploitasi; lebih tinggi dari 67,2% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/matrix-org/sydent/commit/0f00412017f25619bc36c264b29ea96808bf310a patch · advisory pihak ketiga
• https://github.com/matrix-org/sydent/commit/3d531ed50d2fd41ac387f36d44d3fb2c62dd22d3 patch · advisory pihak ketiga
• https://github.com/matrix-org/sydent/commit/8936925f561b0c352c2fa922d5097d7245aad00a patch · advisory pihak ketiga
• https://github.com/matrix-org/sydent/commit/9e573348d81df8191bbe8c266c01999c9d57cd5f patch · advisory pihak ketiga
• https://github.com/matrix-org/sydent/security/advisories/GHSA-9jhm-8m8c-c3f4 patch · advisory pihak ketiga
• https://github.com/matrix-org/sydent/releases/tag/v2.3.0 release notes · advisory pihak ketiga
• https://pypi.org/project/matrix-sydent/ product · advisory pihak ketiga