Spoofing attack in Postie - CVE-2019-20203
Published: January 6, 2020 / Updated: June 17, 2021
Vulnerability identifier: #VU23955
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-20203
CWE-ID: CWE-451
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to incorrect processing of user-supplied data in the Authorized Addresses feature. A remote attacker can spoof the From information of an email message and publish a post as a valid user.
Affected software
Postie
How to mitigate CVE-2019-20203
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.