National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2017-16939 Detail

Current Description

The XFRM dump policy implementation in net/xfrm/xfrm_user.c in the Linux kernel before 4.13.11 allows local users to gain privileges or cause a denial of service (use-after-free) via a crafted SO_RCVBUF setsockopt system call in conjunction with XFRM_MSG_GETPOLICY Netlink messages.

Source:  MITRE
Description Last Modified:  11/24/2017
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.8 HIGH
Vector: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 1.8

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

CVSS v2.0 Severity and Metrics:

Base Score: 7.2 HIGH
Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 3.9

Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete
Additional Information:
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=1137b5e2529a8f5ca8ee709288ecba3e68044df2 Patch Technical Description
http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html
http://seclists.org/fulldisclosure/2017/Nov/40 Mailing List Third Party Advisory
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11 Patch Vendor Advisory
http://www.securityfocus.com/bid/101954 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:1318
https://access.redhat.com/errata/RHSA-2018:1355
https://blogs.securiteam.com/index.php/archives/3535 Exploit Patch Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1069702 Issue Tracking
https://github.com/torvalds/linux/commit/1137b5e2529a8f5ca8ee709288ecba3e68044df2 Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html
https://www.debian.org/security/2018/dsa-4082

Technical Details

Vulnerability Type (View All)

  • Permissions, Privileges, and Access Control (CWE-264)

Change History

6 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-16939
NVD Published Date:
11/24/2017
NVD Last Modified:
05/09/2018