What’s Vulnerable › Vulnerabilities

CVE-2020-11467

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-04-01 · updated 2026-06-17
• Weakness: CWE-502

Description

An issue was discovered in Deskpro before 2019.8.0. This product enables administrators to modify the helpdesk interface by editing /portal/api/style/edit-theme-set/template-sources theme templates, and uses TWIG as its template engine. While direct access to self and _self variables was not permitted, one could abuse the accessible variables in one's context to reach a native unserialize function via the code parameter. There, on could pass a crafted payload to trigger a set of POP gadgets in order to achieve remote code execution.

Affected products

• Deskpro: before 2019.8.0 — fixed in 2019.8.0

How to fix

Upgrade to a fixed version: Deskpro 2019.8.0. Check the vendor advisory for mitigations.

References

• https://blog.redforce.io/attacking-helpdesks-part-1-rce-chain-on-deskpro/
• https://support.deskpro.com/en/news/posts/deskpro-security-update-2019-09
• https://support.deskpro.com/en/news/posts/deskpro-v2019-8-0-released-security-update
• https://blog.redforce.io/attacking-helpdesks-part-1-rce-chain-on-deskpro/
• https://support.deskpro.com/en/news/posts/deskpro-security-update-2019-09
• https://support.deskpro.com/en/news/posts/deskpro-v2019-8-0-released-security-update

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