openSUSE Security Update: Security update for bouncycastle ______________________________________________________________________________
Announcement ID: openSUSE-SU-2018:1689-1 Rating: moderate References: #1072697 #1095722 #1095849 #1095850 #1095852 #1095853 #1095854 #1096022 #1096024 #1096025 #1096026 Cross-References: CVE-2016-1000338 CVE-2016-1000339 CVE-2016-1000340 CVE-2016-1000341 CVE-2016-1000342 CVE-2016-1000343 CVE-2016-1000344 CVE-2016-1000345 CVE-2016-1000346 CVE-2016-1000352 CVE-2017-13098 Affected Products: openSUSE Leap 42.3 ______________________________________________________________________________
An update that fixes 11 vulnerabilities is now available.
This update for bouncycastle to version 1.59 fixes the following issues:
These security issues were fixed:
- CVE-2017-13098: BouncyCastle, when configured to use the JCE (Java Cryptography Extension) for cryptographic functions, provided a weak Bleichenbacher oracle when any TLS cipher suite using RSA key exchange was negotiated. An attacker can recover the private key from a vulnerable application. This vulnerability is referred to as "ROBOT" (bsc#1072697). - CVE-2016-1000338: Ensure full validation of ASN.1 encoding of signature on verification. It was possible to inject extra elements in the sequence making up the signature and still have it validate, which in some cases may have allowed the introduction of 'invisible' data into a signed structure (bsc#1095722). - CVE-2016-1000339: Prevent AESEngine key information leak via lookup table accesses (boo#1095853). - CVE-2016-1000340: Preventcarry propagation bugs in the implementation of squaring for several raw math classes (boo#1095854). - CVE-2016-1000341: Fix DSA signature generation vulnerability to timing attack (boo#1095852). - CVE-2016-1000341: DSA signature generation was vulnerable to timing attack. Where timings can be closely observed for the generation of signatures may have allowed an attacker to gain information about the signature's k value and ultimately the private value as well (bsc#1095852). - CVE-2016-1000342: Ensure that ECDSA does fully validate ASN.1 encoding of signature on verification. It was possible to inject extra elements in the sequence making up the signature and still have it validate, which in some cases may have allowed the introduction of 'invisible' data into a signed structure (bsc#1095850). - CVE-2016-1000343: Prevent weak default settings for private DSA key pair generation (boo#1095849). - CVE-2016-1000344: Removed DHIES from the provider to disable the unsafe usage of ECB mode (boo#1096026). - CVE-2016-1000345: The DHIES/ECIES CBC mode was vulnerable to padding oracle attack. In an environment where timings can be easily observed, it was possible with enough observations to identify when the decryption is failing due to padding (bsc#1096025). - CVE-2016-1000346: The other party DH public key was not fully validated. This could have caused issues as invalid keys could be used to reveal details about the other party's private key where static Diffie-Hellman is in use (bsc#1096024). - CVE-2016-1000352: Remove ECIES from the provider to disable the unsafe usage of ECB mode (boo#1096022).
To install this openSUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:
- openSUSE Leap 42.3:
zypper in -t patch openSUSE-2018-628=1
- openSUSE Leap 42.3 (noarch):
https://www.suse.com/security/cve/CVE-2016-1000338.html https://www.suse.com/security/cve/CVE-2016-1000339.html https://www.suse.com/security/cve/CVE-2016-1000340.html https://www.suse.com/security/cve/CVE-2016-1000341.html https://www.suse.com/security/cve/CVE-2016-1000342.html https://www.suse.com/security/cve/CVE-2016-1000343.html https://www.suse.com/security/cve/CVE-2016-1000344.html https://www.suse.com/security/cve/CVE-2016-1000345.html https://www.suse.com/security/cve/CVE-2016-1000346.html https://www.suse.com/security/cve/CVE-2016-1000352.html https://www.suse.com/security/cve/CVE-2017-13098.html https://bugzilla.suse.com/1072697 https://bugzilla.suse.com/1095722 https://bugzilla.suse.com/1095849 https://bugzilla.suse.com/1095850 https://bugzilla.suse.com/1095852 https://bugzilla.suse.com/1095853 https://bugzilla.suse.com/1095854 https://bugzilla.suse.com/1096022 https://bugzilla.suse.com/1096024 https://bugzilla.suse.com/1096025 https://bugzilla.suse.com/1096026