National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2017-17053 Detail

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.

Source:  MITRE
Description Last Modified:  11/28/2017
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.0 HIGH
Vector: AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 1.0

Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 7.6 HIGH
Vector: (AV:N/AC:H/Au:N/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 4.9

Access Vector (AV): Network
Access Complexity (AC): High
Authentication (AU): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete
Additional Information:
Victim must voluntarily interact with attack mechanism
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ccd5b3235180eef3cfec337df1c8554ab151b5cc Issue Tracking Patch
http://www.securityfocus.com/bid/102010 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:0676
https://github.com/torvalds/linux/commit/ccd5b3235180eef3cfec337df1c8554ab151b5cc Patch
https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.12.10 Issue Tracking

Technical Details

Vulnerability Type (View All)

Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-17053
NVD Published Date:
11/28/2017
NVD Last Modified:
04/11/2018