[Secure-testing-team] Bug#793412: openssh-client: scp can send arbitrary control characters / escape sequences to the terminal

[Vincent Lefevre]

Package: openssh-client
Version: 1:6.7p1-6
Severity: important
Tags: security
Forwarded: https://bugzilla.mindrot.org/show_bug.cgi?id=2434

I have reported the following bug upstream (I don't think it is
specific to Debian):

When outputting filenames to the terminal, scp doesn't filter out
non-printable characters. Example:

$ touch "ab`tput clear`cd"
$ ls ab*
ab?[H?[2Jcd
$ scp ab* localhost:/tmp

clears the screen.

-- System Information:
Debian Release: stretch/sid
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16.0-4-amd64 (SMP w/8 CPU cores)
Locale: LANG=POSIX, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages openssh-client depends on:
ii  adduser           3.113+nmu3
ii  dpkg              1.18.1
ii  libc6             2.19-19
ii  libedit2          3.1-20150325-1
ii  libgssapi-krb5-2  1.13.2+dfsg-2
ii  libselinux1       2.3-2+b1
ii  libssl1.0.0       1.0.2d-1
ii  passwd            1:4.2-3
ii  zlib1g            1:1.2.8.dfsg-2+b1

Versions of packages openssh-client recommends:
ii  xauth  1:1.0.9-1

Versions of packages openssh-client suggests:
pn  keychain      <none>
pn  libpam-ssh    <none>
pn  monkeysphere  <none>
pn  ssh-askpass   <none>

-- no debconf information