CVE-2017-16939

HIGH

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.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1137b5e2529a8f5ca8ee709288ecba3e68044df2

http://lists.opensuse.org/opensuse-security-announce/2018-01/msg00007.html

http://seclists.org/fulldisclosure/2017/Nov/40

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.11

http://www.securityfocus.com/bid/101954

https://access.redhat.com/errata/RHSA-2018:1318

https://access.redhat.com/errata/RHSA-2018:1355

https://access.redhat.com/errata/RHSA-2019:1170

https://access.redhat.com/errata/RHSA-2019:1190

https://blogs.securiteam.com/index.php/archives/3535

https://bugzilla.suse.com/show_bug.cgi?id=1069702

https://github.com/torvalds/linux/commit/1137b5e2529a8f5ca8ee709288ecba3e68044df2

https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html

https://www.debian.org/security/2018/dsa-4082

Details

Source: MITRE

Published: 2017-11-24

Updated: 2019-05-14

Type: CWE-264

Risk Information

CVSS v2.0

Base Score: 7.2

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH

CVSS v3.0

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH