Critical severity · published Dec 18, 2020
CVE-2020-27780
A flaw was found in Linux-Pam in versions prior to 1.5.1 in the way it handle empty passwords for non-existing users
9.8
CVSS
2%
EPSS
No
On KEV
Description
A flaw was found in Linux-Pam in versions prior to 1.5.1 in the way it handle empty passwords for non-existing users. When the user doesn't exist PAM try to authenticate with root and in the case of an empty password it successfully authenticate.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.0% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
Linux-pam · Linux-pam
1.5.0 before 1.5.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-27780
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-27780
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1901094
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