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CVE-2009-3623

UnknownEPSS 3.47%

Last modified

CVE-2009-3623 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 3.47% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
3.47%

87.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LinuxLinux Kernel<= 2.6.31.1
LinuxLinux Kernel2.6.0
LinuxLinux Kernel2.6.1
LinuxLinux Kernel2.6.2
LinuxLinux Kernel2.6.3
LinuxLinux Kernel2.6.4
LinuxLinux Kernel2.6.5
LinuxLinux Kernel2.6.6
LinuxLinux Kernel2.6.7
LinuxLinux Kernel2.6.8
LinuxLinux Kernel2.6.8.1
LinuxLinux Kernel2.6.9
LinuxLinux Kernel2.6.10
LinuxLinux Kernel2.6.11
LinuxLinux Kernel2.6.11.1
LinuxLinux Kernel2.6.11.2
LinuxLinux Kernel2.6.11.3
LinuxLinux Kernel2.6.11.4
LinuxLinux Kernel2.6.11.5
LinuxLinux Kernel2.6.11.6
LinuxLinux Kernel2.6.11.7
LinuxLinux Kernel2.6.11.8
LinuxLinux Kernel2.6.11.9
LinuxLinux Kernel2.6.11.10
LinuxLinux Kernel2.6.11.11
LinuxLinux Kernel2.6.11.12
LinuxLinux Kernel2.6.12
LinuxLinux Kernel2.6.12.1
LinuxLinux Kernel2.6.12.2
LinuxLinux Kernel2.6.12.3
LinuxLinux Kernel2.6.12.4
LinuxLinux Kernel2.6.12.5
LinuxLinux Kernel2.6.12.6
LinuxLinux Kernel2.6.13
LinuxLinux Kernel2.6.13.1
LinuxLinux Kernel2.6.13.2
LinuxLinux Kernel2.6.13.3
LinuxLinux Kernel2.6.13.4
LinuxLinux Kernel2.6.13.5
LinuxLinux Kernel2.6.14
LinuxLinux Kernel2.6.14.1
LinuxLinux Kernel2.6.14.2
LinuxLinux Kernel2.6.14.3
LinuxLinux Kernel2.6.14.4
LinuxLinux Kernel2.6.14.5
LinuxLinux Kernel2.6.14.6
LinuxLinux Kernel2.6.14.7
LinuxLinux Kernel2.6.15
LinuxLinux Kernel2.6.15.1
LinuxLinux Kernel2.6.15.2

Showing 50 of 317 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2009-3623?
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.
How severe is CVE-2009-3623?
Severity scoring for CVE-2009-3623 is pending analysis. The EPSS model estimates a 3.47% probability of exploitation in the next 30 days.
How do I fix CVE-2009-3623?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-3623?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST