CVE-2017-17053

Current Description

The init_new_context function in arch/x86/include/asm/mmu_context.h in the Linux kernel before 4.12.10 does not correctly handle errors from LDT table allocation when forking a new process, allowing a local attacker to achieve a use-after-free or possibly have unspecified other impact by running a specially crafted program. This vulnerability only affected kernels built with CONFIG_MODIFY_LDT_SYSCALL=y.

Basic Data

PublishedNovember 29, 2017
Last ModifiedDecember 19, 2018
Assignercve@mitre.org
Data TypeCVE
Data FormatMITRE
Data Version4.0
Problem TypeCWE-416
CVE Data Version4.0

Base Metric V2

CVSS 2 - Version2.0
CVSS 2 - Vector StringAV:L/AC:M/Au:N/C:C/I:C/A:C
CVSS 2 - Access VectorLOCAL
CVSS 2 - Access ComplexityMEDIUM
CVSS 2 - AuthenticationNONE
CVSS 2 - Confidentiality ImpactCOMPLETE
CVSS 2 - Availability ImpactCOMPLETE
CVSS 2 - Base Score6.9
SeverityMEDIUM
Exploitability Score3.4
Impact Score10.0
Obtain All Privilegefalse
Obtain User Privilegefalse
Obtain Other Privilegefalse

Base Metric V3

CVSS 3 - Version3.0
CVSS 3 - Vector StringCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3 - Attack VectorLOCAL
CVSS 3 - Attack ComplexityHIGH
CVSS 3 - Privileges RequiredLOW
CVSS 3 - User InteractionNONE
CVSS 3 - ScopeUNCHANGED
CVSS 3 - Confidentiality ImpactHIGH
CVSS 3 - Integrity ImpactHIGH
CVSS 3 - Availability ImpactHIGH
CVSS 3 - Base Score7.0
CVSS 3 - Base SeverityHIGH
Exploitability Score1.0
Base SeverityHIGH

Configurations

  • OR - Configuration 1
    Cpe VersionPartVendorProductVersionUpdateEditionLanguageSW EditionTarget SWTarget HWOtherVersion Start IncludingVersion End IncludingVersion Start ExcludingVersion End Excluding
    2.3OSLinuxLinux Kernel********4.12.10

Vulnerable Software List

VendorProductVersions
Linux Linux Kernel *

References

NameSourceURLTags
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ccd5b3235180eef3cfec337df1c8554ab151b5cchttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ccd5b3235180eef3cfec337df1CONFIRMIssue Tracking Patch
102010http://www.securityfocus.com/bid/102010BIDThird Party Advisory VDB Entry
RHSA-2018:0676https://access.redhat.com/errata/RHSA-2018:0676REDHATThird Party Advisory
https://github.com/torvalds/linux/commit/ccd5b3235180eef3cfec337df1c8554ab151b5cchttps://github.com/torvalds/linux/commit/ccd5b3235180eef3cfec337df1c8554ab151b5ccCONFIRMPatch
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.12.10https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.12.10CONFIRMIssue Tracking