CVE-2016-0704
s2_srvr.c overwrite the wrong bytes in the master-key when applying
Bleichenbacher protection for export cipher suites. This provides a
Bleichenbacher oracle, and could potentially allow more efficient variants of
the DROWN attack.
CVE-2016-0703
s2_srvr.c did not enforce that clear-key-length is 0 for non-export ciphers.
If clear-key bytes are present for these ciphers, they *displace* encrypted-key
bytes. This leads to an efficient divide-and-conquer key recovery attack: if
an eavesdropper has intercepted an SSLv2 handshake, they can use the server as
an oracle to determine the SSLv2 master-key, using only 16 connections to the
server and negligible computation. More importantly, this leads to a more
efficient version of DROWN that is effective against non-export ciphersuites,
and requires no significant computation.
CVE-2016-0702
A side-channel attack was found which makes use of cache-bank conflicts on
the Intel Sandy-Bridge microarchitecture which could lead to the recovery of
RSA keys. The ability to exploit this issue is limited as it relies on an
attacker who has control of code in a thread running on the same hyper-
threaded core as the victim thread which is performing decryptions.
CVE-2016-0799
The internal |fmtstr| function used in processing a "%s" format string in
the BIO_*printf functions could overflow while calculating the length of a
string and cause an OOB read when printing very long strings. Additionally
the internal |doapr_outch| function can attempt to write to an OOB memory
location (at an offset from the NULL pointer) in the event of a memory
allocation failure. In 1.0.2 and below this could be caused where the size
of a buffer to be allocated is greater than INT_MAX. E.g. this could be in
processing a very long "%s" format string. Memory leaks can also occur.
The first issue may mask the second issue dependent on compiler behaviour.
These problems could enable attacks where large amounts of untrusted data is
passed to the BIO_*printf functions. If applications use these functions in
this way then they could be vulnerable. OpenSSL itself uses these functions
when printing out human-readable dumps of ASN.1 data. Therefore applications
that print this data could be vulnerable if the data is from untrusted sources.
OpenSSL command line applications could also be vulnerable where they print out
ASN.1 data, or if untrusted data is passed as command line arguments. Libssl is
not considered directly vulnerable. Additionally certificates etc received via
remote connections via libssl are also unlikely to be able to trigger these
issues because of message size limits enforced within libssl.
CVE-2016-0797
In the BN_hex2bn function the number of hex digits is calculated using an int
value |i|. Later |bn_expand| is called with a value of |i * 4|. For large
values of |i| this can result in |bn_expand| not allocating any memory because
|i * 4| is negative. This can leave the internal BIGNUM data field as NULL
leading to a subsequent NULL ptr deref. For very large values of |i|, the
calculation |i * 4| could be a positive value smaller than |i|. In this case
memory is allocated to the internal BIGNUM data field, but it is insufficiently
sized leading to heap corruption. A similar issue exists in BN_dec2bn. This
could have security consequences if BN_hex2bn/BN_dec2bn is ever called by user
applications with very large untrusted hex/dec data. This is anticipated to be
a rare occurrence. All OpenSSL internal usage of these functions use data that
is not expected to be untrusted, e.g. config file data or application command
line arguments. If user developed applications generate config file data based
on untrusted data then it is possible that this could also lead to security
consequences. This is also anticipated to be rare.
CVE-2016-0798
The SRP user database lookup method SRP_VBASE_get_by_user had confusing memory
management semantics; the returned pointer was sometimes newly allocated, and
sometimes owned by the callee. The calling code has no way of distinguishing
these two cases. Specifically, SRP servers that configure a secret seed to hide
valid login information are vulnerable to a memory leak: an attacker connecting
with an invalid username can cause a memory leak of around 300 bytes per
connection. Servers that do not configure SRP, or configure SRP but do not
configure a seed are not vulnerable. In Apache, the seed directive is known as
SSLSRPUnknownUserSeed. To mitigate the memory leak, the seed handling in
SRP_VBASE_get_by_user is now disabled even if the user has configured a seed.
Applications are advised to migrate to SRP_VBASE_get1_by_user. However, note
that OpenSSL makes no strong guarantees about the indistinguishability of valid
and invalid logins. In particular, computations are currently not carried out
in constant time.
CVE-2016-0705
A double free bug was discovered when OpenSSL parses malformed DSA private keys
and could lead to a DoS attack or memory corruption for applications that
receive DSA private keys from untrusted sources. This scenario is considered
rare.
CVE-2016-0800
A cross-protocol attack was discovered that could lead to decryption of TLS
sessions by using a server supporting SSLv2 and EXPORT cipher suites as a
Bleichenbacher RSA padding oracle. Note that traffic between clients and non-
vulnerable servers can be decrypted provided another server supporting SSLv2
and EXPORT ciphers (even with a different protocol such as SMTP, IMAP or POP)
shares the RSA keys of the non-vulnerable server. This vulnerability is known
as DROWN (CVE-2016-0800). Recovering one session key requires the attacker to
perform approximately 2^50 computation, as well as thousands of connections to
the affected server. A more efficient variant of the DROWN attack exists
against unpatched OpenSSL servers using versions that predate 1.0.2a, 1.0.1m,
1.0.0r and 0.9.8zf released on 19/Mar/2015 (see CVE-2016-0703 below). Users can
avoid this issue by disabling the SSLv2 protocol in all their SSL/TLS servers,
if they've not done so already. Disabling all SSLv2 ciphers is also sufficient,
provided the patches for CVE-2015-3197 (fixed in OpenSSL 1.0.1r and 1.0.2f)
have been deployed. Servers that have not disabled the SSLv2 protocol, and are
not patched for CVE-2015-3197 are vulnerable to DROWN even if all SSLv2
ciphers are nominally disabled, because malicious clients can force the use of
SSLv2 with EXPORT ciphers. OpenSSL 1.0.2g and 1.0.1s deploy the following
mitigation against DROWN: SSLv2 is now by default disabled at build-time.
Builds that are not configured with "enable-ssl2" will not support SSLv2.
Even if "enable-ssl2" is used, users who want to negotiate SSLv2 via the
version-flexible SSLv23_method() will need to explicitly call either of:
SSL_CTX_clear_options(ctx, SSL_OP_NO_SSLv2); or SSL_clear_options(ssl,
SSL_OP_NO_SSLv2); as appropriate. Even if either of those is used, or the
application explicitly uses the version-specific SSLv2_method() or its client
or server variants, SSLv2 ciphers vulnerable to exhaustive search key recovery
have been removed. Specifically, the SSLv2 40-bit EXPORT ciphers, and SSLv2
56-bit DES are no longer available. In addition, weak ciphers in SSLv3 and up
are now disabled in default builds of OpenSSL. Builds that are not configured
with "enable-weak-ssl-ciphers" will not provide any "EXPORT" or "LOW" strength
ciphers.
Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
SVN-Revision: 48868
Opkg now uses sha256 by default and expects them. Making it optionally
understand md5s also and detect md5 sum so we can migrate from configuration
that used md5.
Signed-off-by: Michal Hrusecky <Michal.Hrusecky@nic.cz>
SVN-Revision: 48867
This patch moves the OOLITE profile code into the overarching Gainstrong
profile and deletes the old single profile file.
Signed-off by: Stijn Segers <francesco.borromini@inventati.org>
SVN-Revision: 48866
Move the `--recursive` switch from `git clone` to `git submodule`
so that submodules are cloned for upstream branches where the
PKG_SOURCE_VERSION commit-ish has a different .gitmodules
configuration than the repository default.
This is, for example, required when the master branch for a source
package does not use submodules, but its topic branch for OpenWRT
does.
This changes the buildroot dependency from git-1.6.2 to git 1.7.12.2,
which was released September 2012.
Signed-off-by: Darik Horn <dajhorn@vanadac.com>
Signed-off-by: Karl Palsson <karlp@tweak.net.au>
SVN-Revision: 48830
The new u-boot version bundled with the 5.6.x firmwares from Ubiquiti gets
confused by the smaller rootfs partition size; this can lead to various
issues:
1. We've gotten reports that flashing from the 5.6.x stock firmware to
OpenWrt will brick devices; I wasn't able to reproduce this myself
2. Flashing from 5.5.x stock firmware to OpenWrt and back to stock (via
TFTP recovery), following by an update to 5.6.x via web interface can
yield a bricked device with the following properties:
- It can't be booted without entering commands over a serial console, as
u-boot supplies the wrong MTD layout
- The web interface won't accept any image with the original flash
layout, so stock firmware upgrades are impossible
- As the TFTP recovery doesn't update u-boot, returning to the old
u-boot from firmware 5.5.x is impossible
To recover from 2., creating an OpenWrt image which doesn't set u-boot as
read-only and flashing a backup of the old u-boot from there is the only
way known to me. (Fixing the mtdparts variable in u-boot-env from OpenWrt
might also work; settings this from u-boot over serial didn't have
any permanent effect.)
Fix all of this by setting the correct flash layout also used by the stock
firmware. Flashing has been tested from both firmware 5.5.x and 5.6.x. The
fixed layout also matches the mtdparts defined by OpenWrt.
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
SVN-Revision: 48829
The ubdev01 profile defines its own MTDPARTS with smaller firmware
partition, so give it its own UBNT_BOARD in mkfwimage.
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
SVN-Revision: 48828
This will be used to create a diff between the Lantiq annex A and the
annex B firmware.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
SVN-Revision: 48810
Enable setting a host-specific lease time for static hosts.
The new option is called "leasetime" and the format is similar
as for the default lease time: e.g. 12h, 3d, infinite
Default lease time is used for all hosts for which there is
no host-specific definition.
The option is added to /etc/config/dhcp for the selected hosts:
config host
option name 'Nexus'
option mac 'd8:50:66:55:59:7c'
option ip '192.168.1.245'
option leasetime '2h'
It gets appended to /var/etc/dnsmasq.conf like this:
dhcp-host=d8:50:66:55:59:7c,192.168.1.245,Nexus,2h
Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>
SVN-Revision: 48801
There are time that programs need to be notified of events from
subsystems that are not enumerated in the .json definition, e.g. QEMU
guest agent by default requires /dev/virtio-ports/org.qemu.guest_agent.0
which is a symlink to /dev/vportMpN from virtio-ports subsystem.
Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
SVN-Revision: 48799
This is the first patch of a series of three to tidy up the profiles for
Gainstrong devices. Right now there are two Gainstrong profiles, each
for a single device built by this manufacturer. This patch renames the
MiniBox profile to Gainstrong and updates the copyright notice.
The series applies cleanly to current trunk. Resent with the architecture in
the subject, forgot that the first time.
Signed-off by: Stijn Segers <francesco.borromini@inventati.org>
SVN-Revision: 48797
Hi,
the board in subject (RT5350F-OLinuXino-EVB) still ships from vendor
with a RC3 image built upon a .dts file which declares GPIO12 and GPIO14
as relay2 and relay1 respectively, as you can see from their rt5350f
branch on GitHub.
For some reason in the official stable build both the GPIOs are swapped
and the wrong names are declared in the gpio-export directive.
I'm submitting this patch which should roll back the wrong changes, so
that we get backward compatibility with any script developed on RC3
which controls the relays.
After patching correct operation is restored:
root@OpenWrt:/# cat /sys/kernel/debug/gpio
GPIOs 0-21, platform/10000600.gpio, 10000600.gpio:
gpio-0 (button ) in hi
gpio-12 (relay2 ) out lo
gpio-14 (relay1 ) out lo
Thank you,
Signed-off-by: Lorenzo Cafaro <lorenzo@ibisco.net>
SVN-Revision: 48796
The vdso version of this function has some problems with the cache.
Very often it works on dated data which causes problem. We are
currently working on fixing this in upstream Linux kernel.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
SVN-Revision: 48787
This activates the format warnings in this package and that makes it
possible to activate format-security checks.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
SVN-Revision: 48785
Fix for invalid/random WLAN MAC address in WNR612v2. Permanent platform
MAC is calculated and assigned during system startup. WLAN MAC follows
wired Ethernet interface addresses. This is the same fix as for WNR2000v3.
Signed-off-by: Michal Cieslakiewicz <michal.cieslakiewicz@wp.pl>
SVN-Revision: 48779
Netgear WNR612v2 has no USB port yet default system image
includes USB kernel modules. This patch fixes that.
Signed-off-by: Michal Cieslakiewicz <michal.cieslakiewicz@wp.pl>
SVN-Revision: 48778
Fix for invalid/random WLAN MAC address in WNR2000v3. Permanent platform
MAC is calculated and assigned during system startup. WLAN MAC follows
wired Ethernet interface addresses.
Signed-off-by: Michal Cieslakiewicz <michal.cieslakiewicz@wp.pl>
SVN-Revision: 48777
This patch adds extra parameter to switch LED trigger initialization
functions. New functionality maintains backward compatibility, so
calling functions without setting new speed_mask parameter works
as expected.
Signed-off-by: Michal Cieslakiewicz <michal.cieslakiewicz@wp.pl>
SVN-Revision: 48776
This patch adds speed_mask special file to LEDs connected to switch ports
via 'switch' trigger. It allows to choose which speeds to signal when link
is up. If router has more than one LED per port, they may light up
differently depending on how fast connection is. Default setting is 'all
speeds' so backward compatibility with system scripts (for example uci) is
maintained.
Signed-off-by: Michal Cieslakiewicz <michal.cieslakiewicz@wp.pl>
SVN-Revision: 48775
This patch changes swconfig_trig_port_mask_store() handler to utilize
kstrtoul() function instead of call to obsolete simple_strtoul(). Thanks
to this change, new handler takes less memory and makes port_mask special
file accept not only hexadecimal, but also decimal and octal numbers.
Signed-off-by: Michal Cieslakiewicz <michal.cieslakiewicz@wp.pl>
SVN-Revision: 48774
As indicated in the bug tracker[1], failsafe mode is broken on at least some
devices using the mt7620 switch (and possibly mt7621). The thread explicitly
mentions the Xiaomi MiWifi, and the Nexx WT3020, and an unspecified device
using the mt7621 switch; the issue also applies to the Netgear EX2700.
The problem is that failsafe mode uses eth0, but enable_vlan is always set to 1
by the switch driver. Connecting to and/or pinging the device fails. This patch
fixes the failsafe preinit config, by making sure that vlan support is disabled.
It currently only fixes the switch config on mt7620, but might apply to the
mt7621 as well, so the patch has been designed with this in mind.
A similar (line wrapped) patch was submitted in December by Simon Peter, but never
accepted and/or discussed.
This patch applies to both Chaos Calmer and trunk.
[1] https://dev.openwrt.org/ticket/18768
Signed-off-by: Joseph C. Lehner <joseph.c.lehner@gmail.com>
SVN-Revision: 48772
This patch adds support for building factory and sysupgrade images
for the Netgear EX2700 that don't require modification of u-boot
environment variables.
The bootloader on this device expects the kernel partition to end
on a 64k block boundary. The last 64 byte of the kernel partition
must contain a valid uImage header - in the stock firmware, this is
the uImage header of the root filesystem. For this patch, we're using
the uImage header of a 0 byte partition (ex2700-fakeroot.uImage).
Signed-off-by: Joseph C. Lehner <joseph.c.lehner@gmail.com>
SVN-Revision: 48771
