#VU46084 Improper Neutralization of Special Elements in Output Used by a Downstream Component in Zulip Server - CVE-2020-15070

Vulnerability identifier: #VU46084

Vulnerability risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-15070

CWE-ID: CWE-74

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Zulip Server
Web applications / Other software

Vendor: Zulip

Description

The vulnerability allows a remote authenticated user to execute arbitrary code.

Zulip Server 2.x before 2.1.7 allows eval injection if a privileged attacker were able to write directly to the postgres database, and chose to write a crafted custom profile field value.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Zulip Server: 2.1.0 - 2.1.6

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External links
https://blog.zulip.com/2020/06/26/zulip-server-2-1-7-security-release/

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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.