openSUSE Security Update : putty (openSUSE-SU-2013:1355-1)

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Synopsis :

The remote openSUSE host is missing a security update.

Description :

Putty was updated to 0.63, bringing features, bug and security fixes.

Changes :

- Add 0001-Revert-the-default-for-font-bolding-style.patch
(upstream patch fixing a cosmetic change introduced in
0.63)

- Add Conflict tag against pssh package (Parallel SSH) due
to conflicting files in /usr/bin

- Do signature verification

- update to 0.63

- Security fix: prevent a nefarious SSH server or network
attacker from crashing PuTTY at startup in three
different ways by presenting a maliciously constructed
public key and signature. [bnc#833567] CVE-2013-4852

- Security fix: PuTTY no longer retains the private half
of users' keys in memory by mistake after authenticating
with them.

- Revamped the internal configuration storage system to
remove all fixed arbitrary limits on string lengths. In
particular, there should now no longer be an
unreasonably small limit on the number of port
forwardings PuTTY can store.

- Forwarded TCP connections which close one direction
before the other should now be reliably supported, with
EOF propagated independently in the two directions. This
also fixes some instances of forwarding data corruption
(if the corruption consisted of losing data from the
very end of the connection) and some instances of PuTTY
failing to close when the session is over (because it
wrongly thought a forwarding channel was still active
when it was not).

- The terminal emulation now supports xterm's bracketed
paste mode (allowing aware applications to tell the
difference between typed and pasted text, so that e.g.
editors need not apply inappropriate auto-indent).

- You can now choose to display bold text by both
brightening the foreground colour and changing the font,
not just one or the other.

- PuTTYgen will now never generate a 2047-bit key when
asked for 2048 (or more generally n−1 bits when
asked for n).

- Some updates to default settings: PuTTYgen now generates
2048-bit keys by default (rather than 1024), and PuTTY
defaults to UTF-8 encoding and 2000 lines of scrollback
(rather than ISO 8859-1 and 200).

- Unix: PSCP and PSFTP now preserve the Unix file
permissions, on copies in both directions.

- Unix: dead keys and compose-character sequences are now
supported.

- Unix: PuTTY and pterm now permit font fallback (where
glyphs not present in your selected font are
automatically filled in from other fonts on the system)
even if you are using a server-side X11 font rather than
a Pango client-side one.

- Bug fixes too numerous to list, mostly resulting from
running the code through Coverity Scan which spotted an
assortment of memory and resource leaks, logic errors,
and crashes in various circumstances.

- packaging changes :

- run make from base directory

- run tests

- remove putty-01-werror.diff (currently not needed)

- remove putty-02-remove-gtk1.diff,
putty-05-glib-deprecated.diff,
putty-06-gtk2-indivhdr.diff (no longer needed)

- refresh putty-03-config.diff

- remove autoconf calls and requirements

- package HTML documentation

- package LICENCE file

See also :

http://lists.opensuse.org/opensuse-updates/2013-08/msg00041.html
https://bugzilla.novell.com/show_bug.cgi?id=833567

Solution :

Update the affected putty packages.

Risk factor :

Medium / CVSS Base Score : 6.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 5.0
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: SuSE Local Security Checks

Nessus Plugin ID: 75124 ()

Bugtraq ID:

CVE ID: CVE-2013-4852

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