Authentication Flaw in Linux-Pam Affects User Security
CVE-2020-27780

9.8CRITICAL

Key Information:

Vendor

Linux-pam

Status
Pam
Vendor
CVE Published:
18 December 2020

What is CVE-2020-27780?

A vulnerability exists in Linux-Pam prior to version 1.5.1, where the handling of empty passwords for non-existing users leads to unauthorized authentication. When a user attempts to log in with an empty password, the system erroneously attempts to authenticate them as root, thereby bypassing standard security measures and potentially compromising system integrity.

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Affected Version(s)

pam pam 1.5.1

References

https://bugzilla.redhat.com/show_bug.cgi?id=1901094
x_refsource_MISC

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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