CVE-2011-4120

Yubico PAM Module before 2.10 performed user authentication when 'use_first_pass' PAM configuration option was not used and the module was configured as 'sufficient' in the PAM configuration. A remote attacker could use this flaw to circumvent common authentication process and obtain access to the account in question by providing a NULL value (pressing Ctrl-D keyboard sequence) as the password string.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://security-tracker.debian.org/tracker/CVE-2011-4120	Third Party Advisory
https://www.openwall.com/lists/oss-security/2011/11/07/6	Mailing List Third Party Advisory
https://access.redhat.com/security/cve/cve-2011-4120	Broken Link Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4120	Issue Tracking Patch Third Party Advisory

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Configurations

Configuration 1 (hide)

AND

cpe:2.3:a:yubico:pam_module:*:*:*:*:*:*:*:*

cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:debian:debian_linux:8.0:::::::*
	cpe:2.3:o:debian:debian_linux:9.0:::::::*
	cpe:2.3:o:debian:debian_linux:10.0:::::::*

Information

Published : 2019-11-25 21:15

Updated : 2020-08-18 08:05

NVD link : CVE-2011-4120

Mitre link : CVE-2011-4120

JSON object : View

CWE

CWE-20

Improper Input Validation

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Products Affected

debian

debian_linux

yubico

pam_module

linux

linux_kernel

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