CVE-2021-32827

Katalog CVE

CVSS 9.6 · Critical EPSS 2,2%

Kerentanan Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') pada mock-server mockserver, oracle communications cloud native core policy. Skor CVSS 3.1 9.6 (Critical) menurut NVD.

Deskripsi (NVD)

MockServer is open source software which enables easy mocking of any system you integrate with via HTTP or HTTPS. An attacker that can trick a victim into visiting a malicious site while running MockServer locally, will be able to run arbitrary code on the MockServer machine. With an overly broad default CORS configuration MockServer allows any site to send cross-site requests. Additionally, MockServer allows you to create dynamic expectations using Javascript or Velocity templates. Both engines may allow an attacker to execute arbitrary code on-behalf of MockServer. By combining these two issues (Overly broad CORS configuration + Script injection), an attacker could serve a malicious page so that if a developer running MockServer visits it, they will get compromised. For more details including a PoC see the referenced GHSL-2021-059.

Rincian

Terbit di NVD

16 Agustus 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

EPSS (30 hari)

2,2% peluang dieksploitasi; lebih tinggi dari 81,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://www.oracle.com/security-alerts/cpujan2022.html patch · advisory pihak ketiga
• https://securitylab.github.com/advisories/GHSL-2021-059-mockserver/ exploit · advisory pihak ketiga