PT-2017-17563 · Linux+5 · Linux Kernel+5
Published
2017-03-19
·
Updated
2023-02-10
·
CVE-2017-7184
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 4.10.6
Description
The issue allows local users to obtain root privileges or cause a denial of service (heap-based out-of-bounds access) by leveraging the CAP NET ADMIN capability. This can be achieved through the xfrm replay verify len function in net/xfrm/xfrm user.c after an XFRM MSG NEWAE update, which does not validate certain size data. The vulnerability was demonstrated during a Pwn2Own competition at CanSecWest 2017.
Recommendations
For Linux kernel versions prior to 4.10.6, update to a version 4.10.6 or later to resolve the issue. As a temporary workaround, consider restricting the use of the CAP NET ADMIN capability to minimize the risk of exploitation.
Fix
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Related Identifiers
Affected Products
Alt Linux
Centos
Linux Kernel
Red Hat
Suse
Ubuntu