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CVE-2016-3116

Status Candidate

Overview

CRLF injection vulnerability in Dropbear SSH before 2016.72 allows remote authenticated users to bypass intended shell-command restrictions via crafted X11 forwarding data.

Related Files

Gentoo Linux Security Advisory 201607-08
Posted Jul 20, 2016
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201607-8 - A vulnerability has been found in Dropbear, which allows remote authenticated users to bypass intended shell-command restrictions. Versions less than 2016.73 are affected.

tags | advisory, remote, shell
systems | linux, gentoo
advisories | CVE-2016-3116
SHA-256 | 37c6e42ccd2e3205e832bfa112c6fd71bfd4a0029363d1e168539226fbb72a83
Dropbear SSHD xauth Command Injection / Bypass
Posted Mar 15, 2016
Authored by INTREST SEC

Dropbear sshd versions 2015.71 and below suffer from a command injection vulnerability via xauth. An authenticated user may inject arbitrary xauth commands by sending an x11 channel request that includes a newline character in the x11 cookie. The newline acts as a command separator to the xauth binary. This attack requires the server to have 'X11Forwarding yes' enabled. Disabling it, mitigates this vector.

tags | exploit, arbitrary, bypass
advisories | CVE-2016-3116
SHA-256 | 8129326c102e22e1da62a2fd903c2546c85eba1fd49af454ec0eeb8768c919e3
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