Improper Verification of Cryptographic Signature in SOGo - CVE-2021-33054
Published: December 27, 2021
Vulnerability identifier: #VU59094
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: CVE-2021-33054
CWE-ID: CWE-347
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Inverse Inc.
Affected software:
SOGo
SOGo
Detailed vulnerability description
The vulnerability allows a remote attacker to perform MitM attack.
The vulnerability exists due to missing validation of digital signatures for SAML messages. A remote attacker can impersonate users application users when SAML is the authentication method.
How to mitigate CVE-2021-33054
Install updates from vendor's website.
Sources
- https://github.com/inverse-inc/sogo/blob/master/CHANGELOG.md
- https://www.sogo.nu/news.html
- https://blogs.akamai.com/2021/06/sogo-and-packetfence-impacted-by-saml-implementation-vulnerabilities.html
- https://lists.debian.org/debian-lts-announce/2021/07/msg00007.html
- https://www.debian.org/security/2021/dsa-5029