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Ubuntu: openssl-blacklist update Print E-mail
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Posted by Benjamin D. Thomas   
Ubuntu A weakness has been discovered in the random number generator used by OpenSSL on Debian and Ubuntu systems. As a result of this weakness, certain encryption keys are much more common than they should be, such that an attacker could guess the key through a brute-force attack given minimal knowledge of the system. This particularly affects the use of encryption keys in OpenSSH, OpenVPN and SSL certificates.
=========================================================== 
Ubuntu Security Notice USN-612-11              June 18, 2008
openssl-blacklist update
http://www.ubuntu.com/usn/usn-612-1
http://www.ubuntu.com/usn/usn-612-3
http://www.ubuntu.com/usn/usn-612-8
http://www.ubuntu.com/usn/usn-612-9
===========================================================

A security issue affects the following Ubuntu releases:

Ubuntu 6.06 LTS
Ubuntu 7.04
Ubuntu 7.10
Ubuntu 8.04 LTS

This advisory also applies to the corresponding versions of
Kubuntu, Edubuntu, and Xubuntu.

The problem can be corrected by upgrading your system to the
following package versions:

Ubuntu 6.06 LTS:
  openssl-blacklist               0.3.3+0.4-0ubuntu0.6.06.2
  openssl-blacklist-extra         0.3.3+0.4-0ubuntu0.6.06.2

Ubuntu 7.04:
  openssl-blacklist               0.3.3+0.4-0ubuntu0.7.04.2
  openssl-blacklist-extra         0.3.3+0.4-0ubuntu0.7.04.2

Ubuntu 7.10:
  openssl-blacklist               0.3.3+0.4-0ubuntu0.7.10.2
  openssl-blacklist-extra         0.3.3+0.4-0ubuntu0.7.10.2

Ubuntu 8.04 LTS:
  openssl-blacklist               0.3.3+0.4-0ubuntu0.8.04.3
  openssl-blacklist-extra         0.3.3+0.4-0ubuntu0.8.04.3

In general, a standard system upgrade is sufficient to effect the
necessary changes.

Details follow:

USN-612-3 addressed a weakness in OpenSSL certificate and key
generation and introduced openssl-blacklist to aid in detecting
vulnerable certificates and keys. This update adds RSA-4096
blacklists to the openssl-blacklist-extra package and adjusts
openssl-vulnkey to properly handle RSA-4096 and higher moduli.

Original advisory details:
 A weakness has been discovered in the random number generator used
 by OpenSSL on Debian and Ubuntu systems. As a result of this
 weakness, certain encryption keys are much more common than they
 should be, such that an attacker could guess the key through a
 brute-force attack given minimal knowledge of the system. This
 particularly affects the use of encryption keys in OpenSSH, OpenVPN
 and SSL certificates.


Updated packages for Ubuntu 6.06 LTS:

  Source archives:

    http://security.ubuntu.com/ubuntu/pool/main/o/openssl-blacklist/openssl-blacklist_0.3.3+0.4-0ubuntu0.6.06.2.dsc
      Size/MD5:      676 ec900c22df66e7da2543082d7123aed7
    http://security.ubuntu.com/ubuntu/pool/main/o/openssl-blacklist/openssl-blacklist_0.3.3+0.4-0ubuntu0.6.06.2.tar.gz
      Size/MD5: 32928890 ff8a69186860a3c9bc78c86b51993154

  Architecture independent packages:

    http://security.ubuntu.com/ubuntu/pool/main/o/openssl-blacklist/openssl-blacklist-extra_0.3.3+0.4-0ubuntu0.6.06.2_all.deb
      Size/MD5:  6317974 c71f0e9dfaf87712672fb52acb55db0d
    http://security.ubuntu.com/ubuntu/pool/main/o/openssl-blacklist/openssl-blacklist_0.3.3+0.4-0ubuntu0.6.06.2_all.deb
      Size/MD5:  6333018 e43b4ea20935655041e803064cee6626

Updated packages for Ubuntu 7.04:

  Source archives:

    http://security.ubuntu.com/ubuntu/pool/main/o/openssl-blacklist/openssl-blacklist_0.3.3+0.4-0ubuntu0.7.04.2.dsc
      Size/MD5:      812 71e900154130bd20b4401b6ac2653cdc
    http://security.ubuntu.com/ubuntu/pool/main/o/openssl-blacklist/openssl-blacklist_0.3.3+0.4-0ubuntu0.7.04.2.tar.gz
      Size/MD5: 32928996 37d24b96159aca653515a8aa136f31d3

  Architecture independent packages:

    http://security.ubuntu.com/ubuntu/pool/main/o/openssl-blacklist/openssl-blacklist-extra_0.3.3+0.4-0ubuntu0.7.04.2_all.deb
      Size/MD5:  6318082 cc4e2c235c71d36653ce1c2ef1b247bc
    http://security.ubuntu.com/ubuntu/pool/main/o/openssl-blacklist/openssl-blacklist_0.3.3+0.4-0ubuntu0.7.04.2_all.deb
      Size/MD5:  6332858 d805a05a0bc674c064256cf26f231881

Updated packages for Ubuntu 7.10:

  Source archives:

    http://security.ubuntu.com/ubuntu/pool/main/o/openssl-blacklist/openssl-blacklist_0.3.3+0.4-0ubuntu0.7.10.2.dsc
      Size/MD5:      812 b62d9f57a2c6f4e3e671a3d9648b1df1
    http://security.ubuntu.com/ubuntu/pool/main/o/openssl-blacklist/openssl-blacklist_0.3.3+0.4-0ubuntu0.7.10.2.tar.gz
      Size/MD5: 32928995 8717c32922e43aaaf7203ccd268b99a8

  Architecture independent packages:

    http://security.ubuntu.com/ubuntu/pool/main/o/openssl-blacklist/openssl-blacklist-extra_0.3.3+0.4-0ubuntu0.7.10.2_all.deb
      Size/MD5:  6318232 81e856d987468e3fc3a0d6e7e21bf532
    http://security.ubuntu.com/ubuntu/pool/main/o/openssl-blacklist/openssl-blacklist_0.3.3+0.4-0ubuntu0.7.10.2_all.deb
      Size/MD5:  6332724 84087c5b3d5a05cf55d415adaf6974f1

Updated packages for Ubuntu 8.04 LTS:

  Source archives:

    http://security.ubuntu.com/ubuntu/pool/main/o/openssl-blacklist/openssl-blacklist_0.3.3+0.4-0ubuntu0.8.04.3.dsc
      Size/MD5:      943 c1d37d2d4a36ba178022fc27ff6a0bdc
    http://security.ubuntu.com/ubuntu/pool/main/o/openssl-blacklist/openssl-blacklist_0.3.3+0.4-0ubuntu0.8.04.3.tar.gz
      Size/MD5: 32929040 376d57551e6859b39c2e795284978233

  Architecture independent packages:

    http://security.ubuntu.com/ubuntu/pool/main/o/openssl-blacklist/openssl-blacklist-extra_0.3.3+0.4-0ubuntu0.8.04.3_all.deb
      Size/MD5:  6318142 0d1c09236b595d8fd8dbe4a617497d2e
    http://security.ubuntu.com/ubuntu/pool/main/o/openssl-blacklist/openssl-blacklist_0.3.3+0.4-0ubuntu0.8.04.3_all.deb
      Size/MD5:  6333180 df969f0af29ab3474c9d1d7b119a66a7



 
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