Buffer overflow in Glewlwyd SSO server - CVE-2021-40818
Published: September 10, 2021
Vulnerability identifier: #VU56451
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-40818
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in scheme/webauthn.c. A remote attacker can trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Glewlwyd SSO server
How to mitigate CVE-2021-40818
Install update from vendor's website.
Glewlwyd SSO server - update to 2.5.4