CVE-2016-3672
The arch_pick_mmap_layout function in arch/x86/mm/mmap.c in the Linux kernel through 4.5.2 does not properly randomize the legacy base address, which makes it easier for local users to defeat the intended restrictions on the ADDR_NO_RANDOMIZE flag, and…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.17%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The arch_pick_mmap_layout function in arch/x86/mm/mmap.c in the Linux kernel through 4.5.2 does not properly randomize the legacy base address, which makes it easier for local users to defeat the intended restrictions on the ADDR_NO_RANDOMIZE flag, and bypass the ASLR protection mechanism for a setuid or setgid program, by disabling stack-consumption resource limits.
- CVSS 3.0
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.17% probability · 66th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-254
- Affected
- canonical/ubuntu linux · novell/suse linux enterprise software development kit · novell/suse linux enterprise desktop · novell/suse linux enterprise live patching · novell/suse linux enterprise module for public cloud · novell/suse linux enterprise real time extension · novell/suse linux enterprise server · novell/suse linux enterprise workstation extension · linux/linux kernel
- Source
- cve@mitre.org
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8b8addf891de8a00e4d39fc32f93f7c5eb8feceb
- http://hmarco.org/bugs/CVE-2016-3672-Unlimiting-the-stack-not-longer-dis
- http://hmarco.org/bugs/CVE-2016-3672-Unlimiting-the-stack-not-longer-disables-ASLR.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182524.html
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00044.html
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00054.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html
- http://seclists.org/fulldisclosure/2016/Apr/26
- http://www.debian.org/security/2016/dsa-3607
- http://www.securityfocus.com/archive/1/537996/100/0/threaded
- http://www.securityfocus.com/bid/85884
- http://www.securitytracker.com/id/1035506
- http://www.ubuntu.com/usn/USN-2989-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2996-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2997-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-2998-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3000-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3001-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3002-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3003-1Third Party Advisory
- http://www.ubuntu.com/usn/USN-3004-1Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:0676
- https://access.redhat.com/errata/RHSA-2018:1062
- https://bugzilla.redhat.com/show_bug.cgi?id=1324749Issue Tracking
- https://github.com/torvalds/linux/commit/8b8addf891de8a00e4d39fc32f93f7c5eb8fecebPatch, Vendor Advisory
- https://www.exploit-db.com/exploits/39669/
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8b8addf891de8a00e4d39fc32f93f7c5eb8feceb
- http://hmarco.org/bugs/CVE-2016-3672-Unlimiting-the-stack-not-longer-dis
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.