Authentication Bypass Vulnerability in gsi-openssh-server on Fedora
CVE-2019-7639

8.1HIGH

Key Information:

Vendor

Fedoraproject

Status
Fedora
Vendor
CVE Published:
8 February 2019

What is CVE-2019-7639?

A security vulnerability has been identified in gsi-openssh-server 7.9p1 on Fedora 29, allowing users to authenticate with a valid username even when the provided password is incorrect. This occurs when the PermitPAMUserChange option is enabled in the sshd_config file. While a failure is logged, this flaw could lead to unauthorized access, compromising system security.

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References

https://bugzilla.redhat.com/show_bug.cgi?id=1673802
x_refsource_MISC

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability Reserved

  • Vulnerability published

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