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Sid 1-16699

Message

PROTOCOL-RPC Linux Kernel nfsd v2 udp CAP_MKNOD security bypass attempt

Summary

nfsd in the Linux kernel before 2.6.28.9 does not drop the CAPMKNOD capability before handling a user request in a thread, which allows local users to create device nodes, as demonstrated on a filesystem that has been exported with the rootsquash option.

Impact

CVSS base score 4.9 CVSS impact score 6.9 CVSS exploitability score 3.9 confidentialityImpact NONE integrityImpact COMPLETE availabilityImpact COMPLETE

CVE-2009-1072:

CVSS base score 4.9

CVSS impact score 6.9

CVSS exploitability score 3.9

Confidentiality Impact NONE

Integrity Impact COMPLETE

Availability Impact NONE

Detailed information

CVE-2009-1072: nfsd in the Linux kernel before 2.6.28.9 does not drop the CAPMKNOD capability before handling a user request in a thread, which allows local users to create device nodes, as demonstrated on a filesystem that has been exported with the rootsquash option.

Affected systems

linux linux_kernel 2.2.27
linux linux_kernel 2.4.36
linux linux_kernel 2.4.36.1
linux linux_kernel 2.4.36.2
linux linux_kernel 2.4.36.3
linux linux_kernel 2.4.36.4
linux linux_kernel 2.4.36.5
linux linux_kernel 2.4.36.6
linux linux_kernel 2.6
linux linux_kernel 2.6.0
linux linux_kernel 2.6.1
linux linux_kernel 2.6.2
linux linux_kernel 2.6.2.27.13
linux linux_kernel 2.6.3
linux linux_kernel 2.6.4
linux linux_kernel 2.6.5
linux linux_kernel 2.6.6
linux linux_kernel 2.6.7
linux linux_kernel 2.6.8
linux linux_kernel 2.6.8.1
linux linux_kernel 2.6.9
linux linux_kernel 2.6.10
linux linux_kernel 2.6.11
linux linux_kernel 2.6.11.1
linux linux_kernel 2.6.11.2
linux linux_kernel 2.6.11.3
linux linux_kernel 2.6.11.4
linux linux_kernel 2.6.11.5
linux linux_kernel 2.6.11.6
linux linux_kernel 2.6.11.7
linux linux_kernel 2.6.11.8
linux linux_kernel 2.6.11.9
linux linux_kernel 2.6.11.10
linux linux_kernel 2.6.11.11
linux linux_kernel 2.6.11.12
linux linux_kernel 2.6.12
linux linux_kernel 2.6.12.1
linux linux_kernel 2.6.12.2
linux linux_kernel 2.6.12.3
linux linux_kernel 2.6.12.4
linux linux_kernel 2.6.12.5
linux linux_kernel 2.6.12.6
linux linux_kernel 2.6.13
linux linux_kernel 2.6.13.1
linux linux_kernel 2.6.13.2
linux linux_kernel 2.6.13.3
linux linux_kernel 2.6.13.4
linux linux_kernel 2.6.13.5
linux linux_kernel 2.6.14
linux linux_kernel 2.6.14.1
linux linux_kernel 2.6.14.2
linux linux_kernel 2.6.14.3
linux linux_kernel 2.6.14.4
linux linux_kernel 2.6.14.5
linux linux_kernel 2.6.14.6
linux linux_kernel 2.6.14.7
linux linux_kernel 2.6.15
linux linux_kernel 2.6.15.1
linux linux_kernel 2.6.15.2
linux linux_kernel 2.6.15.3
linux linux_kernel 2.6.15.4
linux linux_kernel 2.6.15.5
linux linux_kernel 2.6.15.6
linux linux_kernel 2.6.15.7
linux linux_kernel 2.6.16
linux linux_kernel 2.6.16.1
linux linux_kernel 2.6.16.2
linux linux_kernel 2.6.16.3
linux linux_kernel 2.6.16.4
linux linux_kernel 2.6.16.5
linux linux_kernel 2.6.16.6
linux linux_kernel 2.6.16.7
linux linux_kernel 2.6.16.8
linux linux_kernel 2.6.16.9
linux linux_kernel 2.6.16.10
linux linux_kernel 2.6.16.11
linux linux_kernel 2.6.16.12
linux linux_kernel 2.6.16.13
linux linux_kernel 2.6.16.14
linux linux_kernel 2.6.16.15
linux linux_kernel 2.6.16.16
linux linux_kernel 2.6.16.17
linux linux_kernel 2.6.16.18
linux linux_kernel 2.6.16.19
linux linux_kernel 2.6.16.20
linux linux_kernel 2.6.16.21
linux linux_kernel 2.6.16.22
linux linux_kernel 2.6.16.23
linux linux_kernel 2.6.16.24
linux linux_kernel 2.6.16.25
linux linux_kernel 2.6.16.26
linux linux_kernel 2.6.16.27
linux linux_kernel 2.6.16.28
linux linux_kernel 2.6.16.29
linux linux_kernel 2.6.16.30
linux linux_kernel 2.6.16.31
linux linux_kernel 2.6.16.32
linux linux_kernel 2.6.16.33
linux linux_kernel 2.6.16.34
linux linux_kernel 2.6.16.35
linux linux_kernel 2.6.16.36
linux linux_kernel 2.6.16.37
linux linux_kernel 2.6.16.38
linux linux_kernel 2.6.16.39
linux linux_kernel 2.6.16.40
linux linux_kernel 2.6.16.41
linux linux_kernel 2.6.16.42
linux linux_kernel 2.6.16.43
linux linux_kernel 2.6.16.44
linux linux_kernel 2.6.16.45
linux linux_kernel 2.6.16.46
linux linux_kernel 2.6.16.47
linux linux_kernel 2.6.16.48
linux linux_kernel 2.6.16.49
linux linux_kernel 2.6.16.50
linux linux_kernel 2.6.16.51
linux linux_kernel 2.6.16.52
linux linux_kernel 2.6.16.53
linux linux_kernel 2.6.16.54
linux linux_kernel 2.6.16.55
linux linux_kernel 2.6.16.56
linux linux_kernel 2.6.16.57
linux linux_kernel 2.6.16.58
linux linux_kernel 2.6.16.59
linux linux_kernel 2.6.16.60
linux linux_kernel 2.6.16.61
linux linux_kernel 2.6.16.62
linux linux_kernel 2.6.17
linux linux_kernel 2.6.17.1
linux linux_kernel 2.6.17.2
linux linux_kernel 2.6.17.3
linux linux_kernel 2.6.17.4
linux linux_kernel 2.6.17.5
linux linux_kernel 2.6.17.6
linux linux_kernel 2.6.17.7
linux linux_kernel 2.6.17.8
linux linux_kernel 2.6.17.9
linux linux_kernel 2.6.17.10
linux linux_kernel 2.6.17.11
linux linux_kernel 2.6.17.12
linux linux_kernel 2.6.17.13
linux linux_kernel 2.6.17.14
linux linux_kernel 2.6.18
linux linux_kernel 2.6.18.1
linux linux_kernel 2.6.18.2
linux linux_kernel 2.6.18.3
linux linux_kernel 2.6.18.4
linux linux_kernel 2.6.18.5
linux linux_kernel 2.6.18.6
linux linux_kernel 2.6.18.7
linux linux_kernel 2.6.18.8
linux linux_kernel 2.6.19
linux linux_kernel 2.6.19.1
linux linux_kernel 2.6.19.2
linux linux_kernel 2.6.19.3
linux linux_kernel 2.6.19.4
linux linux_kernel 2.6.19.5
linux linux_kernel 2.6.19.6
linux linux_kernel 2.6.19.7
linux linux_kernel 2.6.20
linux linux_kernel 2.6.20.1
linux linux_kernel 2.6.20.2
linux linux_kernel 2.6.20.3
linux linux_kernel 2.6.20.4
linux linux_kernel 2.6.20.5
linux linux_kernel 2.6.20.6
linux linux_kernel 2.6.20.7
linux linux_kernel 2.6.20.8
linux linux_kernel 2.6.20.9
linux linux_kernel 2.6.20.10
linux linux_kernel 2.6.20.11
linux linux_kernel 2.6.20.12
linux linux_kernel 2.6.20.13
linux linux_kernel 2.6.20.14
linux linux_kernel 2.6.20.15
linux linux_kernel 2.6.20.16
linux linux_kernel 2.6.20.17
linux linux_kernel 2.6.20.18
linux linux_kernel 2.6.20.19
linux linux_kernel 2.6.20.20
linux linux_kernel 2.6.20.21
linux linux_kernel 2.6.21
linux linux_kernel 2.6.21.1
linux linux_kernel 2.6.21.2
linux linux_kernel 2.6.21.3
linux linux_kernel 2.6.21.4
linux linux_kernel 2.6.21.5
linux linux_kernel 2.6.21.6
linux linux_kernel 2.6.21.7
linux linux_kernel 2.6.22
linux linux_kernel 2.6.22.1
linux linux_kernel 2.6.22.2
linux linux_kernel 2.6.22.3
linux linux_kernel 2.6.22.4
linux linux_kernel 2.6.22.5
linux linux_kernel 2.6.22.6
linux linux_kernel 2.6.22.7
linux linux_kernel 2.6.22.8
linux linux_kernel 2.6.22.9
linux linux_kernel 2.6.22.10
linux linux_kernel 2.6.22.11
linux linux_kernel 2.6.22.12
linux linux_kernel 2.6.22.13
linux linux_kernel 2.6.22.14
linux linux_kernel 2.6.22.15
linux linux_kernel 2.6.22.16
linux linux_kernel 2.6.22.17
linux linux_kernel 2.6.22.18
linux linux_kernel 2.6.22.19
linux linux_kernel 2.6.22.20
linux linux_kernel 2.6.22.21
linux linux_kernel 2.6.22.22
linux linuxkernel 2.6.22rc1
linux linuxkernel 2.6.22rc7
linux linux_kernel 2.6.23
linux linux_kernel 2.6.23.1
linux linux_kernel 2.6.23.2
linux linux_kernel 2.6.23.3
linux linux_kernel 2.6.23.4
linux linux_kernel 2.6.23.5
linux linux_kernel 2.6.23.6
linux linux_kernel 2.6.23.7
linux linux_kernel 2.6.23.8
linux linux_kernel 2.6.23.9
linux linux_kernel 2.6.23.10
linux linux_kernel 2.6.23.11
linux linux_kernel 2.6.23.12
linux linux_kernel 2.6.23.13
linux linux_kernel 2.6.23.14
linux linux_kernel 2.6.23.15
linux linux_kernel 2.6.23.16
linux linux_kernel 2.6.23.17
linux linuxkernel 2.6.23rc1
linux linux_kernel 2.6.24
linux linux_kernel 2.6.24.1
linux linux_kernel 2.6.24.2
linux linux_kernel 2.6.24.3
linux linux_kernel 2.6.24.4
linux linux_kernel 2.6.24.5
linux linux_kernel 2.6.24.6
linux linux_kernel 2.6.24.7
linux linuxkernel 2.6.24rc1
linux linuxkernel 2.6.24rc4
linux linuxkernel 2.6.24rc5
linux linux_kernel 2.6.25
linux linux_kernel 2.6.25.1
linux linux_kernel 2.6.25.2
linux linux_kernel 2.6.25.3
linux linux_kernel 2.6.25.4
linux linux_kernel 2.6.25.5
linux linux_kernel 2.6.25.6
linux linux_kernel 2.6.25.7
linux linux_kernel 2.6.25.8
linux linux_kernel 2.6.25.9
linux linux_kernel 2.6.25.10
linux linux_kernel 2.6.25.11
linux linux_kernel 2.6.25.12
linux linux_kernel 2.6.25.13
linux linux_kernel 2.6.25.14
linux linux_kernel 2.6.25.15
linux linux_kernel 2.6.25.16
linux linux_kernel 2.6.25.17
linux linux_kernel 2.6.25.18
linux linux_kernel 2.6.25.19
linux linux_kernel 2.6.25.20
linux linux_kernel 2.6.26
linux linux_kernel 2.6.26.1
linux linux_kernel 2.6.26.2
linux linux_kernel 2.6.26.3
linux linux_kernel 2.6.26.4
linux linux_kernel 2.6.26.5
linux linux_kernel 2.6.26.6
linux linux_kernel 2.6.26.7
linux linux_kernel 2.6.26.8
linux linux_kernel 2.6.27
linux linux_kernel 2.6.27.1
linux linux_kernel 2.6.27.2
linux linux_kernel 2.6.27.3
linux linux_kernel 2.6.27.4
linux linux_kernel 2.6.27.5
linux linux_kernel 2.6.27.6
linux linux_kernel 2.6.27.7
linux linux_kernel 2.6.27.8
linux linux_kernel 2.6.27.9
linux linux_kernel 2.6.27.10
linux linux_kernel 2.6.27.11
linux linux_kernel 2.6.27.12
linux linux_kernel 2.6.27.13
linux linux_kernel 2.6.27.14
linux linux_kernel 2.6.27.15
linux linux_kernel 2.6.27.16
linux linux_kernel 2.6.27.17
linux linux_kernel 2.6.27.18
linux linux_kernel 2.6.27.19
linux linux_kernel 2.6.27.20
linux linux_kernel 2.6.28
linux linux_kernel 2.6.28.1
linux linux_kernel 2.6.28.2
linux linux_kernel 2.6.28.3
linux linux_kernel 2.6.28.4
linux linux_kernel 2.6.28.5
linux linux_kernel 2.6.28.6
linux linux_kernel 2.6.28.7
linux linux_kernel 2.6.28.8

Ease of attack

CVE-2009-1072:

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

False positives

None known

False negatives