Security update for bouncycastle SUSE Patch security@suse.de SUSE Security Team openSUSE-SU-2018:1689-1 Final 1 1 2018-06-14T05:39:30Z current 2018-06-14T05:39:30Z 2018-06-14T05:39:30Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for bouncycastle 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). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://lists.opensuse.org/opensuse-security-announce/2018-06/msg00025.html E-Mail link for openSUSE-SU-2018:1689-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings openSUSE Leap 42.3 bouncycastle-1.59-23.3.1 bouncycastle-javadoc-1.59-23.3.1 bouncycastle-1.59-23.3.1 as a component of openSUSE Leap 42.3 bouncycastle-javadoc-1.59-23.3.1 as a component of openSUSE Leap 42.3 In Bouncy Castle JCE Provider version 1.55 and earlier the DSA does not fully validate ASN.1 encoding of signature on verification. It is possible to inject extra elements in the sequence making up the signature and still have it validate, which in some cases may allow the introduction of 'invisible' data into a signed structure. CVE-2016-1000338 openSUSE Leap 42.3:bouncycastle-1.59-23.3.1 openSUSE Leap 42.3:bouncycastle-javadoc-1.59-23.3.1 moderate Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2018-06/msg00025.html https://www.suse.com/security/cve/CVE-2016-1000338.html CVE-2016-1000338 https://bugzilla.suse.com/1095722 SUSE Bug 1095722 In the Bouncy Castle JCE Provider version 1.55 and earlier the primary engine class used for AES was AESFastEngine. Due to the highly table driven approach used in the algorithm it turns out that if the data channel on the CPU can be monitored the lookup table accesses are sufficient to leak information on the AES key being used. There was also a leak in AESEngine although it was substantially less. AESEngine has been modified to remove any signs of leakage (testing carried out on Intel X86-64) and is now the primary AES class for the BC JCE provider from 1.56. Use of AESFastEngine is now only recommended where otherwise deemed appropriate. CVE-2016-1000339 openSUSE Leap 42.3:bouncycastle-1.59-23.3.1 openSUSE Leap 42.3:bouncycastle-javadoc-1.59-23.3.1 moderate Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2018-06/msg00025.html https://www.suse.com/security/cve/CVE-2016-1000339.html CVE-2016-1000339 https://bugzilla.suse.com/1095853 SUSE Bug 1095853 In the Bouncy Castle JCE Provider versions 1.51 to 1.55, a carry propagation bug was introduced in the implementation of squaring for several raw math classes have been fixed (org.bouncycastle.math.raw.Nat???). These classes are used by our custom elliptic curve implementations (org.bouncycastle.math.ec.custom.**), so there was the possibility of rare (in general usage) spurious calculations for elliptic curve scalar multiplications. Such errors would have been detected with high probability by the output validation for our scalar multipliers. CVE-2016-1000340 openSUSE Leap 42.3:bouncycastle-1.59-23.3.1 openSUSE Leap 42.3:bouncycastle-javadoc-1.59-23.3.1 moderate Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2018-06/msg00025.html https://www.suse.com/security/cve/CVE-2016-1000340.html CVE-2016-1000340 https://bugzilla.suse.com/1095854 SUSE Bug 1095854 In the Bouncy Castle JCE Provider version 1.55 and earlier DSA signature generation is vulnerable to timing attack. Where timings can be closely observed for the generation of signatures, the lack of blinding in 1.55, or earlier, may allow an attacker to gain information about the signature's k value and ultimately the private value as well. CVE-2016-1000341 openSUSE Leap 42.3:bouncycastle-1.59-23.3.1 openSUSE Leap 42.3:bouncycastle-javadoc-1.59-23.3.1 moderate Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2018-06/msg00025.html https://www.suse.com/security/cve/CVE-2016-1000341.html CVE-2016-1000341 https://bugzilla.suse.com/1095852 SUSE Bug 1095852 In the Bouncy Castle JCE Provider version 1.55 and earlier ECDSA does not fully validate ASN.1 encoding of signature on verification. It is possible to inject extra elements in the sequence making up the signature and still have it validate, which in some cases may allow the introduction of 'invisible' data into a signed structure. CVE-2016-1000342 openSUSE Leap 42.3:bouncycastle-1.59-23.3.1 openSUSE Leap 42.3:bouncycastle-javadoc-1.59-23.3.1 moderate Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2018-06/msg00025.html https://www.suse.com/security/cve/CVE-2016-1000342.html CVE-2016-1000342 https://bugzilla.suse.com/1095850 SUSE Bug 1095850 In the Bouncy Castle JCE Provider version 1.55 and earlier the DSA key pair generator generates a weak private key if used with default values. If the JCA key pair generator is not explicitly initialised with DSA parameters, 1.55 and earlier generates a private value assuming a 1024 bit key size. In earlier releases this can be dealt with by explicitly passing parameters to the key pair generator. CVE-2016-1000343 openSUSE Leap 42.3:bouncycastle-1.59-23.3.1 openSUSE Leap 42.3:bouncycastle-javadoc-1.59-23.3.1 moderate Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2018-06/msg00025.html https://www.suse.com/security/cve/CVE-2016-1000343.html CVE-2016-1000343 https://bugzilla.suse.com/1095849 SUSE Bug 1095849 In the Bouncy Castle JCE Provider version 1.55 and earlier the DHIES implementation allowed the use of ECB mode. This mode is regarded as unsafe and support for it has been removed from the provider. CVE-2016-1000344 openSUSE Leap 42.3:bouncycastle-1.59-23.3.1 openSUSE Leap 42.3:bouncycastle-javadoc-1.59-23.3.1 moderate Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2018-06/msg00025.html https://www.suse.com/security/cve/CVE-2016-1000344.html CVE-2016-1000344 https://bugzilla.suse.com/1096026 SUSE Bug 1096026 In the Bouncy Castle JCE Provider version 1.55 and earlier the DHIES/ECIES CBC mode vulnerable to padding oracle attack. For BC 1.55 and older, in an environment where timings can be easily observed, it is possible with enough observations to identify when the decryption is failing due to padding. CVE-2016-1000345 openSUSE Leap 42.3:bouncycastle-1.59-23.3.1 openSUSE Leap 42.3:bouncycastle-javadoc-1.59-23.3.1 moderate Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2018-06/msg00025.html https://www.suse.com/security/cve/CVE-2016-1000345.html CVE-2016-1000345 https://bugzilla.suse.com/1096025 SUSE Bug 1096025 In the Bouncy Castle JCE Provider version 1.55 and earlier the other party DH public key is not fully validated. This can cause issues as invalid keys can be used to reveal details about the other party's private key where static Diffie-Hellman is in use. As of release 1.56 the key parameters are checked on agreement calculation. CVE-2016-1000346 openSUSE Leap 42.3:bouncycastle-1.59-23.3.1 openSUSE Leap 42.3:bouncycastle-javadoc-1.59-23.3.1 moderate Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2018-06/msg00025.html https://www.suse.com/security/cve/CVE-2016-1000346.html CVE-2016-1000346 https://bugzilla.suse.com/1096024 SUSE Bug 1096024 In the Bouncy Castle JCE Provider version 1.55 and earlier the ECIES implementation allowed the use of ECB mode. This mode is regarded as unsafe and support for it has been removed from the provider. CVE-2016-1000352 openSUSE Leap 42.3:bouncycastle-1.59-23.3.1 openSUSE Leap 42.3:bouncycastle-javadoc-1.59-23.3.1 moderate Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2018-06/msg00025.html https://www.suse.com/security/cve/CVE-2016-1000352.html CVE-2016-1000352 https://bugzilla.suse.com/1096022 SUSE Bug 1096022 BouncyCastle TLS prior to version 1.0.3, when configured to use the JCE (Java Cryptography Extension) for cryptographic functions, provides a weak Bleichenbacher oracle when any TLS cipher suite using RSA key exchange is negotiated. An attacker can recover the private key from a vulnerable application. This vulnerability is referred to as "ROBOT." CVE-2017-13098 openSUSE Leap 42.3:bouncycastle-1.59-23.3.1 openSUSE Leap 42.3:bouncycastle-javadoc-1.59-23.3.1 moderate Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2018-06/msg00025.html https://www.suse.com/security/cve/CVE-2017-13098.html CVE-2017-13098 https://bugzilla.suse.com/1072697 SUSE Bug 1072697