From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Korsgaard Date: Sun, 21 May 2017 23:32:16 +0200 Subject: [Buildroot] [git commit] dropbear: security bump to version 2017.75 Message-ID: <20170521213905.3E86B8290E@busybox.osuosl.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net commit: https://git.buildroot.net/buildroot/commit/?id=8644a83bd806d1e6efdfd972908798e8e00f7006 branch: https://git.buildroot.net/buildroot/commit/?id=refs/heads/master Fixes: - CVE-2017-9078: A double-free in the server could be triggered by an authenticated user if dropbear is running with -a (Allow connections to forwarded ports from any host) This could potentially allow arbitrary code execution as root by an authenticated user. Affects versions 2013.56 to 2016.74. Thanks to Mark Shepard for reporting the crash. - CVE-2017-9079: Dropbear parsed authorized_keys as root, even if it were a symlink. The fix is to switch to user permissions when opening authorized_keys. A user could symlink their ~/.ssh/authorized_keys to a root-owned file they couldn't normally read. If they managed to get that file to contain valid authorized_keys with command= options it might be possible to read other contents of that file. This information disclosure is to an already authenticated user. Thanks to Jann Horn of Google Project Zero for reporting this. Signed-off-by: Peter Korsgaard --- package/dropbear/dropbear.hash | 2 +- package/dropbear/dropbear.mk | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/package/dropbear/dropbear.hash b/package/dropbear/dropbear.hash index 88f3e6e..98776e7 100644 --- a/package/dropbear/dropbear.hash +++ b/package/dropbear/dropbear.hash @@ -1,2 +1,2 @@ # From https://matt.ucc.asn.au/dropbear/releases/SHA256SUM.asc -sha256 2720ea54ed009af812701bcc290a2a601d5c107d12993e5d92c0f5f81f718891 dropbear-2016.74.tar.bz2 +sha256 6cbc1dcb1c9709d226dff669e5604172a18cf5dbf9a201474d5618ae4465098c dropbear-2017.75.tar.bz2 diff --git a/package/dropbear/dropbear.mk b/package/dropbear/dropbear.mk index a4e2272..bf7f99d 100644 --- a/package/dropbear/dropbear.mk +++ b/package/dropbear/dropbear.mk @@ -4,7 +4,7 @@ # ################################################################################ -DROPBEAR_VERSION = 2016.74 +DROPBEAR_VERSION = 2017.75 DROPBEAR_SITE = http://matt.ucc.asn.au/dropbear/releases DROPBEAR_SOURCE = dropbear-$(DROPBEAR_VERSION).tar.bz2 DROPBEAR_LICENSE = MIT, BSD-2-Clause-like, BSD-2-Clause