-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Package : bouncycastle Version : 1.49+dfsg-3+deb8u3 CVE ID : CVE-2016-1000338 CVE-2016-1000339 CVE-2016-1000341 CVE-2016-1000342 CVE-2016-1000343 CVE-2016-1000345 CVE-2016-1000346
Several security vulnerabilities were found in Bouncy Castle, a Java implementation of cryptographic algorithms. CVE-2016-1000338 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-2016-1000339 Previously 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 and is now the primary AES class for the BC JCE provider. Use of AESFastEngine is now only recommended where otherwise deemed appropriate. CVE-2016-1000341 DSA signature generation is vulnerable to timing attack. Where timings can be closely observed for the generation of signatures, the lack of blinding may allow an attacker to gain information about the signature's k value and ultimately the private value as well. CVE-2016-1000342 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-2016-1000343 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-2016-1000345 The DHIES/ECIES CBC mode is vulnerable to padding oracle attack. 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-2016-1000346 In the Bouncy Castle JCE Provider 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 this release the key parameters are checked on agreement calculation. For Debian 8 "Jessie", these problems have been fixed in version 1.49+dfsg-3+deb8u3. We recommend that you upgrade your bouncycastle packages. Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEErPPQiO8y7e9qGoNf2a0UuVE7UeQFAltAxoNfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldEFD RjNEMDg4RUYzMkVERUY2QTFBODM1RkQ5QUQxNEI5NTEzQjUxRTQACgkQ2a0UuVE7 UeTFrw/+OkEtAXHMvpLSWjgpz8izf7dlTP884iyiKV2FX6qlidWOk9/aR9kZrc7M n74UCrgqihkG2MhRRlKe4PXR4hdC7RTX/gIykOLTHN9a3l5uFe+vMZ4F5p2mBpax ozqRJmMc6ALMqCbaTVzNUaHHL0FMVcy61W7FsB189DogCAs0KxOHAqZmKzmWVn1f 0lMf0zRlzquDO4b36bw9ixtoMDBnxKZRzWIVv361FHmwRkin0lG1nfuqG3R4eVrv AMsp42PCa6/U1+xJ6XkTbBugXBoLHhaDcC74oGeDXXjnqslGKZmQEQEihBLBmSiu LW5gijV6+PSUbJQcKRgUPUnVA2jNS/uO28/nsnXL/K2u1CUl0FJhGUV1NgETVz7Y Glv56Vr9pqpkv0V2Yj3DYDvALiXnpzC9jhyfbc3n3enXdkq7FOoeNEU16wLnl0C8 393o5KtnQXkhtUZ52KUL06ONGzJ/2PnSnvTtdg9kWDuE/dW9ZZq10p91UwUokRdB zgN+vDsIaR4sLiXPEP1Y/K40bgn+r+/YuS/p4ODdYAIIaehiesbSXfiB1bqR74cL OWtGwHRppZ+NL1c6XUuMtwMQZc+LIfsUmCO222xSyuzl1VRr8GdBZqQet71BmAW/ CAFBZJE68/CRaImih4Hus8Vqu1rzJqYnSKJFFNiIetBrum70eK0= =wMaJ -----END PGP SIGNATURE-----