#VU26997 Deserialization of Untrusted Data in AWS SAM - CVE-2020-2180
Published: April 17, 2020
Vulnerability identifier: #VU26997
Vulnerability risk: High
CVSSv4.0: 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-2020-2180
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
AWS SAM
AWS SAM
Software vendor:
Jenkins
Jenkins
Description
The vulnerability allows a remote user to execute arbitrary code on the target system.
The vulnerability exists due to affected software does not configure its YAML parser to prevent the instantiation of arbitrary types. A remote attacker user able to configure a job or control the contents of a previously configured "AWS SAM deploy application" build step’s YAML SAM template file (template.yaml or equivalent) file can pass specially crafted data to the application and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install updates from vendor's website.