#VU17018 Security restrictions bypass in jinjava - CVE-2018-18893

Vulnerability identifier: #VU17018

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-18893

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
jinjava
Client/Desktop applications / Other client software

Vendor: HubSpot

Description

The vulnerability allows a remote attacker to bypass security restrictions.

The vulnerability exists due to the application does not block the getClass method, related to com/hubspot/jinjava/el/ext/JinjavaBeanELResolver.java. A remote attacker can bypass security restrictions to conduct further attacks.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

jinjava: 1.0.0 - 2.0.5

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External links
https://github.com/HubSpot/jinjava/blob/master/CHANGES.md
https://github.com/HubSpot/jinjava/pull/230

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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