Vulnerability CVE-2020-11467


Published: 2020-04-01

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.

Type:

CWE-732

CVSS2 => (AV:N/AC:L/Au:S/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.5/10
6.4/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Deskpro -> Deskpro 

 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

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