Improper Authorization in Yahoo Elide Java library

1) Improper Authorization

EUVDB-ID: #VU26647

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-5289

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented authorization.

The vulnerability exists due to incorrect authorization checks. A remote authenticated attacker can "guess and check" the value of a model field they do not have access to assume they can read at least one other field in the model, then construct filter expressions for an inaccessible field to filter a collection and reconstruct the value of the inaccessible field.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Elide: 1.0.0.2 - 4.5.13

External links

http://github.com/yahoo/elide/pull/1236
http://github.com/yahoo/elide/pull/1236/commits/a985f0f9c448aabe70bc904337096399de4576dc
http://github.com/yahoo/elide/security/advisories/GHSA-2mxr-89gf-rc4v

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.