Buffer overflow in OpenBSD OpenSSH
CVE-2016-10012
The shared memory manager (associated with pre-authentication compression) in sshd in OpenSSH before 7.4 does not ensure that a bounds check is enforced by all compilers, which might allows local users to gain privileges by leveraging access to a sandboxed privilege-separation process, related to the m_zback and m_zlib data structures.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.013 (68.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 68.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security.netapp.com/advisory/ntap-20171130-0002/
- www.openwall.com/lists/oss-security/2016/12/19/2 (mailing-list, Mailing List, Release Notes)
- www.securitytracker.com/id/1037490 (vdb-entry)
- support.hpe.com/hpsc/doc/public/display
- www.slackware.com/security/viewer.php
- access.redhat.com/errata/RHSA-2017:2029 (vendor-advisory)
- lists.debian.org/debian-lts-announce/2018/09/msg00010.html (mailing-list)
- www.openssh.com/txt/release-7.4
- www.securityfocus.com/bid/94975 (vdb-entry)
- github.com/openbsd/src/commit/3095060f479b86288e31c79ecbc5131a66bcd2f9 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2016-10012?
- CVE-2016-10012 is a high-severity vulnerability in OpenBSD OpenSSH, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2017-01-05.
- How severe is CVE-2016-10012?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2016-10012 known to be exploited?
- 18 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.