High severity · published Oct 16, 2020
CVE-2020-27178
Apereo CAS 5.3.x before 5.3.16, 6.x before 6.1.7.2, 6.2.x before 6.2.4, and 6.3.x before 6.3.0-RC4 mishandles secret keys with Google Authenticator for multifactor authentication
7.5
CVSS
1.2%
EPSS
No
On KEV
Description
Apereo CAS 5.3.x before 5.3.16, 6.x before 6.1.7.2, 6.2.x before 6.2.4, and 6.3.x before 6.3.0-RC4 mishandles secret keys with Google Authenticator for multifactor authentication.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 69% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CA
Central Authentication Service · Apereo
5.3.0 before 5.3.16; 6.0.0 before 6.1.7.2; 6.2.0 before 6.2.4; 6.3.0; 6.3.0; 6.3.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-27178
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-27178
Vendor Advisory
https://apereo.github.io/2020/10/14/gauthvuln/
More from Central Authentication Service
9.8
CVE-2024-11209
Apereo CAS 2FA login improper authentication
9.8
CVE-2023-4612
MFA bypass in Apereo CAS
9.1
CVE-2024-4399
CAS <= 1.0.0 - Unauthenticated SSRF
8.1
CVE-2024-11208
Apereo CAS login session expiration
8.1
CVE-2019-10754
Multiple classes used within Apereo CAS before release 6.1.0-RC5 makes use of apache commons-lang3 RandomStringUtils for token and ID generation which makes them predictable due…