Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2009-3623

Severity CVSS v4.0:
Pending analysis
Type:
CWE-287 Authentication Issues
Publication date:
30/10/2009
Last modified:
09/04/2025

Description

The lookup_cb_cred function in fs/nfsd/nfs4callback.c in the nfsd4 subsystem in the Linux kernel before 2.6.31.2 attempts to access a credentials cache even when a client specifies the AUTH_NULL authentication flavor, which allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) via an NFSv4 mount request.

Impact

Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete

Base Score 2.0
7.80
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 2.6.31.1 (including)
cpe:2.3:o:linux:linux_kernel:2.6.0:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.2:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.3:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.4:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.5:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.6:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.7:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.8:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.8.1:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.9:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.10:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.11:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.11.1:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools