CVE Vulnerabilities

CVE-2012-6543

Exposure of Sensitive Information to an Unauthorized Actor

Published: Mar 15, 2013 | Modified: Mar 18, 2013
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
1.9 LOW
AV:L/AC:M/Au:N/C:P/I:N/A:N
RedHat/V2
2.1 LOW
AV:L/AC:L/Au:N/C:P/I:N/A:N
RedHat/V3
Ubuntu

The l2tp_ip6_getname function in net/l2tp/l2tp_ip6.c in the Linux kernel before 3.6 does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel stack memory via a crafted application.

Weakness

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Affected Software

Name Vendor Start Version End Version
Linux_kernel Linux 3.0 3.0
Linux_kernel Linux 3.0 3.0
Linux_kernel Linux 3.0 3.0
Linux_kernel Linux 3.0 3.0
Linux_kernel Linux 3.0 3.0
Linux_kernel Linux 3.0 3.0
Linux_kernel Linux 3.0 3.0
Linux_kernel Linux 3.0.1 3.0.1
Linux_kernel Linux 3.0.2 3.0.2
Linux_kernel Linux 3.0.3 3.0.3
Linux_kernel Linux 3.0.4 3.0.4
Linux_kernel Linux 3.0.5 3.0.5
Linux_kernel Linux 3.0.6 3.0.6
Linux_kernel Linux 3.0.7 3.0.7
Linux_kernel Linux 3.0.8 3.0.8
Linux_kernel Linux 3.0.9 3.0.9
Linux_kernel Linux 3.0.10 3.0.10
Linux_kernel Linux 3.0.11 3.0.11
Linux_kernel Linux 3.0.12 3.0.12
Linux_kernel Linux 3.0.13 3.0.13
Linux_kernel Linux 3.0.14 3.0.14
Linux_kernel Linux 3.0.15 3.0.15
Linux_kernel Linux 3.0.16 3.0.16
Linux_kernel Linux 3.0.17 3.0.17
Linux_kernel Linux 3.0.18 3.0.18
Linux_kernel Linux 3.0.19 3.0.19
Linux_kernel Linux 3.0.20 3.0.20
Linux_kernel Linux 3.0.21 3.0.21
Linux_kernel Linux 3.0.22 3.0.22
Linux_kernel Linux 3.0.23 3.0.23
Linux_kernel Linux 3.0.24 3.0.24
Linux_kernel Linux 3.0.25 3.0.25
Linux_kernel Linux 3.0.26 3.0.26
Linux_kernel Linux 3.0.27 3.0.27
Linux_kernel Linux 3.0.28 3.0.28
Linux_kernel Linux 3.0.29 3.0.29
Linux_kernel Linux 3.0.30 3.0.30
Linux_kernel Linux 3.0.31 3.0.31
Linux_kernel Linux 3.0.32 3.0.32
Linux_kernel Linux 3.0.33 3.0.33
Linux_kernel Linux 3.0.34 3.0.34
Linux_kernel Linux 3.0.35 3.0.35
Linux_kernel Linux 3.0.36 3.0.36
Linux_kernel Linux 3.0.37 3.0.37
Linux_kernel Linux 3.0.38 3.0.38
Linux_kernel Linux 3.0.39 3.0.39
Linux_kernel Linux 3.0.40 3.0.40
Linux_kernel Linux 3.0.41 3.0.41
Linux_kernel Linux 3.0.42 3.0.42
Linux_kernel Linux 3.0.43 3.0.43
Linux_kernel Linux 3.0.44 3.0.44
Linux_kernel Linux 3.0.45 3.0.45
Linux_kernel Linux 3.0.46 3.0.46
Linux_kernel Linux 3.0.47 3.0.47
Linux_kernel Linux 3.0.48 3.0.48
Linux_kernel Linux 3.0.49 3.0.49
Linux_kernel Linux 3.0.50 3.0.50
Linux_kernel Linux 3.0.51 3.0.51
Linux_kernel Linux 3.0.52 3.0.52
Linux_kernel Linux 3.0.53 3.0.53
Linux_kernel Linux 3.0.54 3.0.54
Linux_kernel Linux 3.0.55 3.0.55
Linux_kernel Linux 3.0.56 3.0.56
Linux_kernel Linux 3.0.57 3.0.57
Linux_kernel Linux 3.0.58 3.0.58
Linux_kernel Linux 3.0.59 3.0.59
Linux_kernel Linux 3.0.60 3.0.60
Linux_kernel Linux 3.0.61 3.0.61
Linux_kernel Linux 3.0.62 3.0.62
Linux_kernel Linux 3.0.63 3.0.63
Linux_kernel Linux 3.0.64 3.0.64
Linux_kernel Linux 3.0.65 3.0.65
Linux_kernel Linux 3.0.66 3.0.66
Linux_kernel Linux 3.0.67 3.0.67
Linux_kernel Linux 3.0.68 3.0.68
Linux_kernel Linux 3.1 3.1
Linux_kernel Linux 3.1 3.1
Linux_kernel Linux 3.1 3.1
Linux_kernel Linux 3.1 3.1
Linux_kernel Linux 3.1 3.1
Linux_kernel Linux 3.1.1 3.1.1
Linux_kernel Linux 3.1.2 3.1.2
Linux_kernel Linux 3.1.3 3.1.3
Linux_kernel Linux 3.1.4 3.1.4
Linux_kernel Linux 3.1.5 3.1.5
Linux_kernel Linux 3.1.6 3.1.6
Linux_kernel Linux 3.1.7 3.1.7
Linux_kernel Linux 3.1.8 3.1.8
Linux_kernel Linux 3.1.9 3.1.9
Linux_kernel Linux 3.1.10 3.1.10
Linux_kernel Linux 3.2 3.2
Linux_kernel Linux 3.2 3.2
Linux_kernel Linux 3.2 3.2
Linux_kernel Linux 3.2 3.2
Linux_kernel Linux 3.2 3.2
Linux_kernel Linux 3.2 3.2
Linux_kernel Linux 3.2 3.2
Linux_kernel Linux 3.2.1 3.2.1
Linux_kernel Linux 3.2.2 3.2.2
Linux_kernel Linux 3.2.3 3.2.3
Linux_kernel Linux 3.2.4 3.2.4
Linux_kernel Linux 3.2.5 3.2.5
Linux_kernel Linux 3.2.6 3.2.6
Linux_kernel Linux 3.2.7 3.2.7
Linux_kernel Linux 3.2.8 3.2.8
Linux_kernel Linux 3.2.9 3.2.9
Linux_kernel Linux 3.2.10 3.2.10
Linux_kernel Linux 3.2.11 3.2.11
Linux_kernel Linux 3.2.12 3.2.12
Linux_kernel Linux 3.2.13 3.2.13
Linux_kernel Linux 3.2.14 3.2.14
Linux_kernel Linux 3.2.15 3.2.15
Linux_kernel Linux 3.2.16 3.2.16
Linux_kernel Linux 3.2.17 3.2.17
Linux_kernel Linux 3.2.18 3.2.18
Linux_kernel Linux 3.2.19 3.2.19
Linux_kernel Linux 3.2.20 3.2.20
Linux_kernel Linux 3.2.21 3.2.21
Linux_kernel Linux 3.2.22 3.2.22
Linux_kernel Linux 3.2.23 3.2.23
Linux_kernel Linux 3.2.24 3.2.24
Linux_kernel Linux 3.2.25 3.2.25
Linux_kernel Linux 3.2.26 3.2.26
Linux_kernel Linux 3.2.27 3.2.27
Linux_kernel Linux 3.2.28 3.2.28
Linux_kernel Linux 3.2.29 3.2.29
Linux_kernel Linux 3.2.30 3.2.30
Linux_kernel Linux 3.3 3.3
Linux_kernel Linux 3.3 3.3
Linux_kernel Linux 3.3 3.3
Linux_kernel Linux 3.3 3.3
Linux_kernel Linux 3.3 3.3
Linux_kernel Linux 3.3 3.3
Linux_kernel Linux 3.3 3.3
Linux_kernel Linux 3.3 3.3
Linux_kernel Linux 3.3.1 3.3.1
Linux_kernel Linux 3.3.2 3.3.2
Linux_kernel Linux 3.3.3 3.3.3
Linux_kernel Linux 3.3.4 3.3.4
Linux_kernel Linux 3.3.5 3.3.5
Linux_kernel Linux 3.3.6 3.3.6
Linux_kernel Linux 3.3.7 3.3.7
Linux_kernel Linux 3.3.8 3.3.8
Linux_kernel Linux 3.4 3.4
Linux_kernel Linux 3.4 3.4
Linux_kernel Linux 3.4 3.4
Linux_kernel Linux 3.4 3.4
Linux_kernel Linux 3.4 3.4
Linux_kernel Linux 3.4 3.4
Linux_kernel Linux 3.4 3.4
Linux_kernel Linux 3.4 3.4
Linux_kernel Linux 3.4.1 3.4.1
Linux_kernel Linux 3.4.2 3.4.2
Linux_kernel Linux 3.4.3 3.4.3
Linux_kernel Linux 3.4.4 3.4.4
Linux_kernel Linux 3.4.5 3.4.5
Linux_kernel Linux 3.4.6 3.4.6
Linux_kernel Linux 3.4.7 3.4.7
Linux_kernel Linux 3.4.8 3.4.8
Linux_kernel Linux 3.4.9 3.4.9
Linux_kernel Linux 3.4.10 3.4.10
Linux_kernel Linux 3.4.11 3.4.11
Linux_kernel Linux 3.4.12 3.4.12
Linux_kernel Linux 3.4.13 3.4.13
Linux_kernel Linux 3.4.14 3.4.14
Linux_kernel Linux 3.4.15 3.4.15
Linux_kernel Linux 3.4.16 3.4.16
Linux_kernel Linux 3.4.17 3.4.17
Linux_kernel Linux 3.4.18 3.4.18
Linux_kernel Linux 3.4.19 3.4.19
Linux_kernel Linux 3.4.20 3.4.20
Linux_kernel Linux 3.4.21 3.4.21
Linux_kernel Linux 3.4.22 3.4.22
Linux_kernel Linux 3.4.23 3.4.23
Linux_kernel Linux 3.4.24 3.4.24
Linux_kernel Linux 3.4.25 3.4.25
Linux_kernel Linux 3.4.26 3.4.26
Linux_kernel Linux 3.4.27 3.4.27
Linux_kernel Linux 3.4.28 3.4.28
Linux_kernel Linux 3.4.29 3.4.29
Linux_kernel Linux 3.4.30 3.4.30
Linux_kernel Linux 3.4.31 3.4.31
Linux_kernel Linux 3.4.32 3.4.32
Linux_kernel Linux 3.5.1 3.5.1
Linux_kernel Linux 3.5.2 3.5.2
Linux_kernel Linux 3.5.3 3.5.3
Linux_kernel Linux 3.5.4 3.5.4
Linux_kernel Linux 3.5.5 3.5.5
Linux_kernel Linux 3.5.6 3.5.6
Linux_kernel Linux * 3.5.7
Linux Ubuntu upstream *
Linux-armadaxp Ubuntu upstream *
Linux-ec2 Ubuntu upstream *
Linux-fsl-imx51 Ubuntu lucid *
Linux-fsl-imx51 Ubuntu upstream *
Linux-linaro-omap Ubuntu oneiric *
Linux-linaro-omap Ubuntu precise *
Linux-linaro-omap Ubuntu quantal *
Linux-linaro-omap Ubuntu upstream *
Linux-linaro-shared Ubuntu oneiric *
Linux-linaro-shared Ubuntu precise *
Linux-linaro-shared Ubuntu quantal *
Linux-linaro-shared Ubuntu upstream *
Linux-linaro-vexpress Ubuntu oneiric *
Linux-linaro-vexpress Ubuntu precise *
Linux-linaro-vexpress Ubuntu quantal *
Linux-linaro-vexpress Ubuntu upstream *
Linux-lts-backport-maverick Ubuntu lucid *
Linux-lts-backport-maverick Ubuntu upstream *
Linux-lts-backport-oneiric Ubuntu upstream *
Linux-lts-quantal Ubuntu upstream *
Linux-lts-raring Ubuntu upstream *
Linux-mvl-dove Ubuntu lucid *
Linux-mvl-dove Ubuntu upstream *
Linux-qcm-msm Ubuntu lucid *
Linux-qcm-msm Ubuntu oneiric *
Linux-qcm-msm Ubuntu precise *
Linux-qcm-msm Ubuntu quantal *
Linux-qcm-msm Ubuntu upstream *
Linux-ti-omap4 Ubuntu upstream *

Extended Description

There are many different kinds of mistakes that introduce information exposures. The severity of the error can range widely, depending on the context in which the product operates, the type of sensitive information that is revealed, and the benefits it may provide to an attacker. Some kinds of sensitive information include:

Information might be sensitive to different parties, each of which may have their own expectations for whether the information should be protected. These parties include:

Information exposures can occur in different ways:

It is common practice to describe any loss of confidentiality as an “information exposure,” but this can lead to overuse of CWE-200 in CWE mapping. From the CWE perspective, loss of confidentiality is a technical impact that can arise from dozens of different weaknesses, such as insecure file permissions or out-of-bounds read. CWE-200 and its lower-level descendants are intended to cover the mistakes that occur in behaviors that explicitly manage, store, transfer, or cleanse sensitive information.

Potential Mitigations

  • Compartmentalize the system to have “safe” areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
  • Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

References