This page lists known vulnerabilities for the wolfSSL embedded SSL/TLS library, wolfCrypt embedded crypto engine, and other wolfSSL products. Each vulnerability is linked to the description and CVE if available. Please contact us with any questions or concerns.

Known Vulnerabilities

The SSL protocol, along with the more recent TLS 1.2 protocol, are both well documented and under constant scrutiny by the top experts in security and cryptography. SSL was quickly adopted as a standard world wide. SSL and TLS together secure communications between billions of computers, servers, Internet of Things (IoT) devices, and embedded systems. The security provided by an SSL/TLS Library depends on the underlying strength of its cryptography which is used to encrypt communications.

LINK CVE-2017-13099 Medium Versions of wolfSSL up to 3.12.2 have a weak Bleichenbacher vulnerability with suites that use an RSA-encrypted premaster secret. Discovered by Hanno Böck, Juraj Somorovsky, Craig Young. PR #1229
LINK CVE-2017-2800 Critical Versions of wolfSSL before 3.11.0 have a possible out-of-bounds write by one from a crafted certificate being passed to the function wolfSSL_X509_NAME_get_text_by_NID. Discovered by Aleksandar Nikolic of Cisco Talos. 3.11.0
LINK CVE-2017-8855 High In versions of wolfSSL before 3.11.0 there are cases where a malformed DH key is not rejected by the function wc_DhAgree. Thanks to Yueh-Hsun Lin and Peng Li at KNOX Security at Samsung Research America. 3.11.0
LINK CVE-2017-8854 High Versions of wolfSSL before 3.10.2 have a possible out-of-bounds memory access when loading crafted DH parameters. Thanks to Yueh-Hsun Lin and Peng Li at KNOX Security at Samsung Research America. 3.10.2
LINK CVE-2017-6076 Medium In versions of wolfSSL before 3.10.2 the software implementation makes it easier to extract RSA key information for a malicious user who has access to view the cache on a machine. 3.10.2
LINK CVE-2016-7440 Medium Software AES table lookups do not properly consider cache-bank access times 3.9.10
LINK CVE-2016-7439 Medium Software RSA does not properly consider cache-bank monitoring 3.9.10
LINK CVE-2016-7438 Medium Software ECC does not properly consider cache-bank monitoring 3.9.10
LINK CVE-2015-6925 High Potential DOS attack when using DTLS on the server side 3.6.8
LINK CVE-2015-7744 Medium TLS servers using RSA with ephemeral keys may leak key bits on signature faults 3.6.8
LINK CVE-2014-2900 Medium Unknown critical certificate extension allowed 2.9.4
LINK CVE-2014-2899 Medium NULL pointer dereference on peer cert request after certificate parsing failure 2.9.4
LINK CVE-2014-2898 Low Out of bounds read on repeated calls to CyaSSL_read(), memory access error. 2.9.4
LINK CVE-2014-2897 High Out of bounds read, SSL 3.0 HMAC doesn't check padding length for verify failure 2.9.4
LINK CVE-2014-2896 N/A Memory corruption, possible out of bounds read on length check in DoAlert() 2.9.4

Known Attacks

As researchers and security professionals release new attacks against SSL/TLS protocol versions, algorithms, or cryptographic modes, we want to keep our users informed if wolfSSL is vulnerable or safe to such attacks.

12.08.2017 The ROBOT Attack Medium YES YES
08.24.2016 SWEET32 Attack TLS & SSH - High
OpenVPN - Medium
03.01.2016 DROWN Attack Medium NO N/A
01.07.2016 SLOTH Attack Medium NO N/A
08.11.2015 Pandora's Box Attack N/A NO N/A
07.09.2015 Logjam Attack Critical NO N/A
03.30.2015 Bar Mitzvah Attack Medium YES YES
03.04.2015 FREAK Attack Medium for all implementations YES N/A
12.12.2014 POODLE Bites Again Medium NO N/A
10.14.2014 POODLE: Padding Oracle On Downgraded Legacy Encryption Medium YES YES
04.09.2014 Heartbleed Bug Medium NO N/A
02.05.2014 Lucky 13 Attack Low YES YES
09.24.2012 CRIME Attack Low YES YES
05.13.2011 BEAST Attack Medium YES YES

Contact Us

Email: info@wolfssl.com
Phone: +1 (425) 245-8247