Original description
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.
Affected software
- OpenSSH ≤ 7.3 exact match
Details
- Published
- 2017-01-05
- Last modified
- 2026-06-17
- CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- CWE
- CWE-119
References
- cve.org/CVE-2016-10012
- nvd.nist.gov/vuln/detail/CVE-2016-10012
- www.openwall.com/lists/oss-security/2016/12/19/2
- www.securityfocus.com/bid/94975
- www.securitytracker.com/id/1037490
- www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.647...
- access.redhat.com/errata/RHSA-2017:2029
- cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- github.com/openbsd/src/commit/3095060f479b86288e31c79ecbc5131a66bcd2f9
- lists.debian.org/debian-lts-announce/2018/09/msg00010.html
- security.netapp.com/advisory/ntap-20171130-0002/
- support.f5.com/csp/article/K62201745?utm_source=f5support&%3Butm_medium=RSS
- support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03818en_us
- www.openssh.com/txt/release-7.4
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