Critical, CVSS 9.8npmAmendedPublished
keyget vulnerable to prototype pollution
CVE-2020-28272 · GHSA-8mp8-28xh-r486
- Affected
- npm keyget >= 1.0.0, <= 2.2.0
- Fixed in
- 2.3.0· Vendor fix available
- Issue
- Prototype pollution vulnerability in 'keyget' versions 1.0.0 through 2.2.0 allows attacker to cause a denial of service and may lead to remote code execution. Details The npm module 'keyget' can be abused by Prototype Pollution vulnerability since the function 'setByPath()' did not check for the type of object before assigning value to the property. Due to this flaw an attacker could create a non-existent property or able to manipulate the property which leads to Denial of Service or potentially Remote code execution. PoC Details The setByPath() function accepts three arguments target, path, value. Due to the absence of validation, at values passed into path, value an attacker can supply a malicious value by adjusting the path value to include the proto property. Since there is no validation before assigning property to check whether the assigned path is the Object's own property or not, the property polluted will be directly be assigned to the empty obj({}) thereby…
Recommended action: Upgrade to 2.3.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.