What is CVE-2021-43852?

CVE-2021-43852 is a high-severity vulnerability in Oroinc Oroplatform, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 8.8/10. Published 2022-01-04.

How severe is CVE-2021-43852?

High severity. CVSS v3 base score is 8.8 out of 10.

Prototype Pollution in Oroinc Oroplatform

CVE-2021-43852

OroPlatform is a PHP Business Application Platform. In affected versions by sending a specially crafted request, an attacker could inject properties into existing JavaScript language construct prototypes, such as objects. Later this injection may lead to JS code execution by libraries that are vulnerable to Prototype Pollution. This issue has been patched in version 4.2.8. Users unable to upgrade may configure a firewall to drop requests containing next strings: `__proto__` , `constructor[prototype]`, and `constructor.prototype` to mitigate this issue.

EPSS: 0.011 (62.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:H.

Affected products

Oroinc Oroplatform
Oroinc Platform — versions < 4.2.8

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory, Mitigation)
security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-43852?: CVE-2021-43852 is a high-severity vulnerability in Oroinc Oroplatform, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 8.8/10. Published 2022-01-04.
How severe is CVE-2021-43852?: High severity. CVSS v3 base score is 8.8 out of 10.