RECENT BLOG NEWS

We are integrating wolfTPM into U-Boot. This will extend the TPM 2.0 capabilities in U-Boot to include signature verification and measured boot.

For many platforms we can replace U-Boot such as on the Xilinx UltraScale+ MPSoC.

Our wolfBoot allows many features including:
* Partition signature verification using ED25519, RSA and ECC
* Encryption of partitions
* Updating of partitions in the boot loader
* Measured boot with TPM 2.0 PCR registers
* Offloading to crypto coprocessors like the TPM 2.0 modules
* Version checking for updates
* Rollback on failed updates

For information on our wolfBoot TPM integration see https://www.wolfssl.com/products/wolfboot/.

If you have any questions or run into any issues, contact us at facts@wolfssl.com, or call us at +1 425 245 8247.

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Our first preview release of wolfSentry, the IDPS (Intrusion Detection and Prevention System) for embedded and IoT systems, has platform support for Raspberry Pi, STM32 with CubeMX, Atmel ASF and Barebox. As well as native support for Microsoft Windows and Linux.

Here at wolfSSL we are always striving to be better so we would love to hear which operating environments and platforms you would like to see supported by wolfSentry.

If you have any questions or run into any issues, contact us at facts@wolfssl.com, or call us at +1 425 245 8247.

wolfSSL fans! Do you like FIPS? Do you like virtual machines? Guess what. wolfSSL`s crypto library, wolfCrypt, is validated for FIPS 140-2 and in the process of being one of the first cryptography libraries to be validated for FIPS 140-3. 

As wolfCrypt is commonly used in standard operating environments because of its royalty-free pricing and excellent cross platform support, wolfCrypt FIPS has been validated on a number of Operating Environments (OEs). The current validated OE list for both wolfCrypt FIPS certificates (#2425 and #3389) are listed here for reference.  

Certificate #2425 Current OE List:

Certificate #3389 Current OE List:

wolfSSL can easily add additional OEs to existing wolfCrypt FIPS certificates.

If you have any questions or run into any issues, contact us at facts@wolfssl.com, or call us at +1 425 245 8247.

As some may be aware, wolfSSL added support for strongSwan in April of 2019. The upstream commit can be reviewed here: https://github.com/strongswan/strongswan/pull/133

Users can test the latest development master of wolfSSL with the latest version of strongSwan using the following setup:

wolfSSL Build and Installation Steps

$ git clone https://github.com/wolfSSL/wolfssl.git

$ cd wolfssl
$ ./autogen.sh

$ ./configure --enable-opensslall --enable-keygen --enable-rsapss --enable-des3 --enable-dtls --enable-certgen --enable-certreq --enable-certext --enable-sessioncerts --enable-crl --enable-ocsp CFLAGS="-DWOLFSSL_DES_ECB -DWOLFSSL_LOG_PRINTF -DWOLFSSL_PUBLIC_MP -DHAVE_EX_DATA"

$ make
$ make check
$ sudo make install

strongSwan Build and Installation Steps

# if the following packages are not already installed:
$ sudo apt-get install flex bison byacc libsoup2.4-dev gperf

$ git clone https://github.com/strongswan/strongswan.git
$ cd strongswan
$ ./autogen.sh

# if packages are missing autogen.sh must be re-run

$ ./configure --disable-defaults --enable-pki --enable-wolfssl --enable-pem
$ make
$ make check
$ sudo make install

wolfSSL has had interest in enabling FIPS 140-2/140-3 support with strongSwan so our engineers verified everything is working with the wolfCrypt FIPS 140-2 validated Module!

The steps wolfSSL used for testing are as follows:

Testing was done using the wolfSSL commercial FIPS release v4.7.0 which internally uses the wolfCrypt v4.0.0 FIPS 140-2 validated Crypto Module. It was located in the /home/user-name/Downloads directory on the target test system, Linux 4.15 Ubuntu 18.04 LTS running on Intel(R) Xeon(R) CPU E3-1270 v6 @ 3.80GHz.

1. wolfSSL was configured and installed with these settings:

./configure --enable-opensslall --enable-keygen --enable-rsapss --enable-des3 --enable-dtls --enable-certgen --enable-certreq --enable-certext --enable-sessioncerts --enable-crl --enable-ocsp CFLAGS="-DWOLFSSL_DES_ECB -DWOLFSSL_LOG_PRINTF -DWOLFSSL_PUBLIC_MP -DHAVE_EX_DATA -DFP_MAX_BITS=8192" --enable-ed25519 --enable-curve25519 --enable-fips=v2 --enable-intelasm --prefix=$(pwd)/../fips-install-dir
 make
 make install

2. A custom install location was used which equated to /home/user-name/Downloads/fips-install-dir and the configuration for strongSwan accounted for this.
3. strongSwan was cloned to /home/user-name/Downloads with “git clone https://github.com/strongswan/strongswan.git”
4. StongSwan was configured and installed with these settings:

./configure --disable-defaults --enable-pki --enable-wolfssl --enable-pem --prefix=$(pwd)/../strongswan-install-dir wolfssl_CFLAGS="-I$(pwd)/../fips-install-dir/include" wolfssl_LIBS="-L$(pwd)/../fips-install-dir/lib -lwolfssl"
 make
 make install
 make check

5. In the make check stage of the test, it was observed that 1 test was failing.

 Passed 34 of 35 'libstrongswan' suites
 FAIL: libstrongswan_tests
 ==================
 1 of 1 test failed
 ==================

6. Reviewing the logs it was apparent one of the RSA tests was failing.
7. Upon further debugging it turned out the failure was a test in strongSwan that was attempting to create an RSA key size of 1536-bits.

Running case 'generate':
 DEBUG: key_sizes[_i] set to 1024
 + PASS
 DEBUG: key_sizes[_i] set to 1536
 - FAIL
 DEBUG: key_sizes[_i] set to 2048
 + PASS
 DEBUG: key_sizes[_i] set to 3072
 + PASS
 DEBUG: key_sizes[_i] set to 4096
 + PASS

wolfSSL has a function RsaSizeCheck() which in FIPS mode will specifically reject any non FIPS RSA key sizes so this failure was not only expected, but it is a good thing for those wanting to use strongSwan in FIPS mode and ensure only FIPS-validated RSA key sizes will be supported!

wolfSSL is pleased that with the latest release of wolfSSL v4.7.0 and the wolfCrypt FIPS 140-2 module validated on FIPS certificate 3389, strongSwan support is working splendidly and wolfSSL engineers will be making efforts to ensure continued support into the future!

If you have any questions or run into any issues, contact us at facts@wolfssl.com, or call us at +1 425 245 8247.

devkitPro is a set of tool chains for compiling to gaming platforms. This includes the Nintendo Switch, 3DS, Wii, and Gamecube. If you need cryptographic or SSL/TLS capabilities in your games then wolfSSL has support for compiling with devkitPro. wolfSSL is a very lightweight and fast SSL/TLS library that will fit perfectly in a constrained game console environment.

This blog will showcase how to compile the wolfSSL testwolfcrypt program for Wii and run it in the Dolphin Emulator. It assumes that the devkitPro was installed in /opt/.

Compile wolfSSL using the devkitPPC tool chain:

./autogen.sh
./configure CFLAGS='-DDOLPHIN_EMULATOR -DDEVKITPRO -DGEKKO -DNO_WRITEV -I/opt/devkitpro/libogc/include -mrvl -mcpu=750 -mno-eabi -MMD -MP' LDFLAGS='-L/opt/devkitpro/libogc/lib/wii -lwiiuse -lbte -logc -lm' CC=/opt/devkitpro/devkitPPC/bin/powerpc-eabi-gcc RANLIB=/opt/devkitpro/devkitPPC/bin/powerpc-eabi-ranlib --host=ppc --enable-cryptonly --disable-shared --enable-static --disable-filesystem
make

Then convert the binary to a .dol file:

/opt/devkitpro/tools/bin/elf2dol wolfcrypt/test/testwolfcrypt ../testwolfcrypt.dol

The above command places the resulting binary in the directory that contains the wolfssl directory. Navigate to this directory in the Dolphin Emulator and run it:

If you have any questions or run into any issues, contact us at facts@wolfssl.com, or call us at +1 425 245 8247.

The wolfSSL / wolfCrypt libraries support asynchronous (non-blocking) crypto using hardware acceleration with the Intel QuickAssist and Cavium Nitrox III/V adapters. These are PCIe devices that accelerate crypto operations. For server platforms requiring high connection rates and throughput this allows greatly increased performance.

For some performance numbers see this page: https://www.wolfssl.com/docs/intel-quickassist/

Release v4.7.0 of wolfSSL Async has bug fixes and new features including:

• All wolfSSL v4.7.0 release fixes (https://github.com/wolfSSL/wolfssl/releases/tag/v4.7.0-stable)
• Fix for ARC4 macro typo.
• Fixes for Cavium Nitrox and Intel Quick Assist (https://github.com/wolfSSL/wolfssl/pull/3577) with TLS v1.3
• Documentation updates.
• Fixes for asynchronous memory leaks (https://github.com/wolfSSL/wolfssl/pull/3227)

If you have any questions or run into any issues, contact us at facts@wolfssl.com, or call us at +1 425 245 8247.

We are in the process of adding BSD Kernel compatibility to wolfSSL. This means that our embedded SSL library would run in Kernel mode and use BSD based OE’s. The advantage of this project may include performance enhancement for device driver implementers that want SSL security. Stay tuned for more updates regarding this project. We would love to know do Kernel developers want an SSL library? Please comment!

If you have any questions or run into any issues, contact us at facts@wolfssl.com, or call us at +1 425 245 8247.

This post has been cross posted from Daniel Stenberg’s blog – originally posted here.

Welcome to the 200th curl release. We call it 200 OK. It coincides with us counting more than 900 commit authors and surpassing 2,400 credited contributors in the project. This is also the first release ever in which we thank more than 80 persons in the RELEASE-NOTES for having helped out making it and we’ve set two new record in the bug-bounty program: the largest single payout ever for a single bug (2,000 USD) and the largest total payout during a single release cycle: 3,800 USD.

This release cycle was 42 days only, two weeks shorter than normal due to the previous 7.76.1 patch release.

Numbers

• the 200th release
• 5 changes
• 42 days (total: 8,468)
• 133 bug-fixes (total: 6,966)
• 192 commits (total: 27,202)
• 0 new public libcurl function (total: 85)
• 2 new curl_easy_setopt() option (total: 290)
• 2 new curl command line option (total: 242)
• 82 contributors, 44 new (total: 2,410)
• 47 authors, 23 new (total: 901)
• 3 security fixes (total: 103)
• 3,800 USD paid in Bug Bounties (total: 9,000 USD)

Security

We set two new records in the curl bug-bounty program this time as mentioned above. These are the issues that made them happen.

• CVE-2021-22901: TLS session caching disaster

This is a Use-After-Free in the OpenSSL backend code that in the absolutely worst case can lead to an RCE, a Remote Code Execution. The flaw is reasonably recently added and it’s very hard to exploit but you should upgrade or patch immediately.

The issue occurs when TLS session related info is sent from the TLS server when the transfer that previously used it is already done and gone.

The reporter was awarded 2,000 USD for this finding.

• CVE-2021-22898: TELNET stack contents disclosure

When libcurl accepts custom TELNET options to send to the server, it the input parser was flawed which could be exploited to have libcurl instead send contents from the stack.

The reporter was awarded 1,000 USD for this finding.

• CVE-2021-22897: schannel cipher selection surprise

In the Schannel backend code, the selected cipher for a transfer done with was stored in a static variable. This caused one transfer’s choice to weaken the choice for a single set transfer could unknowingly affect other connections to a lower security grade than intended.

The reporter was awarded 800 USD for this finding.

Changes

In this release we introduce 5 new changes that might be interesting to take a look at!

• Make TLS flavor explicit

As explained separately, the curl configure script no longer defaults to selecting a particular TLS library. When you build curl with configure now, you need to select which library to use. No special treatment for any of them!

• No more SSL

curl now has no more traces of support for SSLv2 or SSLv3. Those ancient and insecure SSL versions were already disabled by default by TLS libraries everywhere, but now it’s also impossible to activate them even in special build. Stripped out from both the curl tool and the library (thus counted as two changes).

• HSTS in the build

We brought HSTS support a while ago, but now we finally remove the experimental label and ship it enabled in the build by default for everyone to use it more easily.

• In-memory cert API

We introduce API options for libcurl that allow users to specify certificates in-memory instead of using files in the file system. See CURLOPT_CAINFO_BLOB.

Favorite bug-fixes

Again we manage to perform a large amount of fixes in this release, so I’m highlighting a few of the ones I find most interesting!

• Version output

The first line of curl -V output got updated: libcurl now includes OpenLDAP and its version of that was used in the build, and then the curl tool can add libmetalink and its version of that was used in the build!

• curl_mprintf: add description

We’ve provided the *printf() clone functions in the API since forever, but we’ve tried to discourage users from using them. Still, now we have a first shot at a man page that clearly describes how they work.

This is important as they’re not quite POSIX compliant and users who against our advice decide to rely on them need to be able to know how they work!

• CURLOPT_IPRESOLVE: preventing wrong IP version from being used

This option was made a little stricter than before. Previously, it would be lax about existing connections and prefer reuse instead of resolving again, but starting now this option makes sure to only use a connection with the request IP version.

This allows applications to explicitly create two separate connections to the same host using different IP versions when desired, which previously libcurl wouldn’t easily let you do.

• Ignore SIGPIPE in curl_easy_send

libcurl makes its best at ignoring SIGPIPE everywhere and here we identified a spot where we had missed it… We also made sure to enable the ignoring logic when built to use wolfSSL.

• Several HTTP/2-fixes

There are no less than 6 separate fixes mentioned in the HTTP/2 module in this release. Some potential memory leaks but also some more behavior improving things. Possibly the most important one was the move of the transfer-related error code from the connection struct to the transfers struct since it was vulnerable to a race condition that could make it wrong. Another related fix is that libcurl no longer forcibly disconnects a connection over which a transfer gets HTTP_1_1_REQUIRED returned.

• Partial CONNECT requests

When the CONNECT HTTP request sent to a proxy wasn’t all sent in a single send() call, curl would fail. It is baffling that this bug hasn’t been found or reported earlier but was detected this time when the reporter issued a CONNECT request that was larger than 16 kilobytes…

• TLS: add USE_HTTP2 define

There was several remaining bad assumptions that HTTP/2 support in curl relies purely on nghttp2. This is no longer true as HTTP/2 support can also be provide by hyper.

• normalize numerical IPv4 hosts

The URL parser now knows about the special IPv4 numerical formats and parses and normalizes URLs with numerical IPv4 addresses.

• Timeout, timed out libssh2 disconnects too

When libcurl (built with libssh2 support) stopped an SFTP transfer because a timeout was triggered, the following SFTP disconnect procedure was subsequently also stopped because of the same timeout and therefore wasn’t allowed to properly clean up everything, leading to a memory-leak!

IRC network switch

We moved the #curl IRC channel to the new network libera.chat. Come join us there!

Next release

On Jul 21, 2021 we plan to ship the next release. The version number for that is not yet decided but we have changes in the pipeline, making a minor version number bump very likely.

Support

• wolfSSL offers Curl support is available, and part of that support revenue goes into finding and fixing these kinds of vulnerabilities.  
•  Customers under curl support can get advice on whether or not the advisories apply to them.
•  24×7 support on curl is available, and can include pre-notification of upcoming vulnerability announcements.

If you have any questions or run into any issues, contact us at facts@wolfssl.com, or call us at +1 425 245 8247.

wolfSSL has a command-line utility, it’s called wolfCLU. As promised, here’s a sneak peek of notable additions to wolfCLU that are coming soon:

1. PKEY and certificate public key output
2. Certificate request creation
3. Updates to human readable text output of certificates

If you have any questions or run into any issues, contact us at facts@wolfssl.com, or call us at +1 425 245 8247.

Download wolfCLU: https://github.com/wolfSSL/wolfssl-examples/tree/master/wolfCLU
Love it? Star us on GitHub!

In case you didn’t know, wolfSSL has a portable command line utility. You can download wolfCLU on Github today for use with the wolfSSL embedded SSL/TLS library! wolfCLU (Command Line Utility) is backed by the best-tested crypto using wolfCrypt and it can make use of FIPS builds with wolfSSL!

wolfCLU currently has the following features:
– Support for ED25519 sign and verify
– Autoconf for portability
– Encrypt a file and store it locally on your computer
– Decrypt that file after it has been encrypted, or send it via email to your friend, if he/she knows the password and algorithm used for encryption, they can then decrypt it on their computer
– Hash a single file (IE a zip archive) for verification
– Benchmark the currently configured Algorithms
– X509 parsing and print out

Download wolfCLU: https://github.com/wolfssl/wolfclu
Love it? Star us on GitHub!

If you have any questions or run into any issues, contact us at facts@wolfssl.com, or call us at +1 425 245 8247.