CVE-2016-4998
The IPT_SO_SET_REPLACE setsockopt implementation in the netfilter subsystem in the Linux kernel before 4.6 allows local users to cause a denial of service (out-of-bounds read) or possibly obtain sensitive information from kernel heap memory by…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.88%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The IPT_SO_SET_REPLACE setsockopt implementation in the netfilter subsystem in the Linux kernel before 4.6 allows local users to cause a denial of service (out-of-bounds read) or possibly obtain sensitive information from kernel heap memory by leveraging in-container root access to provide a crafted offset value that leads to crossing a ruleset blob boundary.
- CVSS 3.0
- 7.1 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 1.88% probability · 78th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- linux/linux kernel · oracle/linux · canonical/ubuntu linux
- Source
- secalert@redhat.com
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6e94e0cfb0887e4013b3b930fa6ab1fe6bb6ba91
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html
- http://rhn.redhat.com/errata/RHSA-2016-1847.html
- http://rhn.redhat.com/errata/RHSA-2016-1875.html
- http://rhn.redhat.com/errata/RHSA-2016-1883.html
- http://rhn.redhat.com/errata/RHSA-2017-0036.html
- http://www.debian.org/security/2016/dsa-3607
- http://www.openwall.com/lists/oss-security/2016/06/24/5
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.htmlThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html
- http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html
- http://www.securityfocus.com/bid/91451
- http://www.securitytracker.com/id/1036171
- http://www.ubuntu.com/usn/USN-3016-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3016-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-3016-3Third Party Advisory
- http://www.ubuntu.com/usn/USN-3016-4Third Party Advisory
- http://www.ubuntu.com/usn/USN-3017-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3017-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-3017-3Third Party Advisory
- http://www.ubuntu.com/usn/USN-3018-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3018-2Third Party Advisory
- http://www.ubuntu.com/usn/USN-3019-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3020-1Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1349886Issue Tracking, Third Party Advisory, VDB Entry
- https://github.com/torvalds/linux/commit/6e94e0cfb0887e4013b3b930fa6ab1fe6bb6ba91Patch, Vendor Advisory
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6e94e0cfb0887e4013b3b930fa6ab1fe6bb6ba91
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.