openSUSE Security Update: Security update for libressl
______________________________________________________________________________

Announcement ID:    openSUSE-SU-2018:2592-1
Rating:             moderate
References:         #1097779 
Cross-References:   CVE-2018-12434
Affected Products:
                    openSUSE Leap 15.0
______________________________________________________________________________

   An update that fixes one vulnerability is now available.

Description:

   This update for libressl to version 2.8.0 fixes the following issues:

   Security issues fixed:

   - CVE-2018-12434: Avoid a timing side-channel leak when generating DSA and
     ECDSA signatures. (boo#1097779)
   - Reject excessively large primes in DH key generation.

   Other bugs fixed:

   - Fixed a pair of 20+ year-old bugs in X509_NAME_add_entry.
   - Tighten up checks for various X509_VERIFY_PARAM functions, 'poisoning'
     parameters so that an unverified certificate cannot be used if it fails
     verification.
   - Fixed a potential memory leak on failure in ASN1_item_digest.
   - Fixed a potential memory alignment crash in asn1_item_combine_free.
   - Removed unused SSL3_FLAGS_DELAY_CLIENT_FINISHED and
     SSL3_FLAGS_POP_BUFFER flags in write path, simplifying IO paths.
   - Removed SSL_OP_TLS_ROLLBACK_BUG buggy client workarounds.
   - Added const annotations to many existing APIs from OpenSSL, making
     interoperability easier for downstream applications.
   - Added a missing bounds check in c2i_ASN1_BIT_STRING.
   - Removed three remaining single DES cipher suites.
   - Fixed a potential leak/incorrect return value in DSA signature
     generation.
   - Added a blinding value when generating DSA and ECDSA signatures, in
     order to reduce the possibility of a side-channel attack leaking the
     private key.
   - Added ECC constant time scalar multiplication support.
   - Revised the implementation of RSASSA-PKCS1-v1_5 to match the
     specification in RFC 8017.


Patch Instructions:

   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 15.0:

      zypper in -t patch openSUSE-2018-950=1



Package List:

   - openSUSE Leap 15.0 (i586 x86_64):

      libcrypto43-2.8.0-lp150.2.3.1
      libcrypto43-debuginfo-2.8.0-lp150.2.3.1
      libressl-2.8.0-lp150.2.3.1
      libressl-debuginfo-2.8.0-lp150.2.3.1
      libressl-debugsource-2.8.0-lp150.2.3.1
      libressl-devel-2.8.0-lp150.2.3.1
      libssl45-2.8.0-lp150.2.3.1
      libssl45-debuginfo-2.8.0-lp150.2.3.1
      libtls17-2.8.0-lp150.2.3.1
      libtls17-debuginfo-2.8.0-lp150.2.3.1

   - openSUSE Leap 15.0 (noarch):

      libressl-devel-doc-2.8.0-lp150.2.3.1

   - openSUSE Leap 15.0 (x86_64):

      libcrypto43-32bit-2.8.0-lp150.2.3.1
      libcrypto43-32bit-debuginfo-2.8.0-lp150.2.3.1
      libressl-devel-32bit-2.8.0-lp150.2.3.1
      libssl45-32bit-2.8.0-lp150.2.3.1
      libssl45-32bit-debuginfo-2.8.0-lp150.2.3.1
      libtls17-32bit-2.8.0-lp150.2.3.1
      libtls17-32bit-debuginfo-2.8.0-lp150.2.3.1


References:

   https://www.suse.com/security/cve/CVE-2018-12434.html
   https://bugzilla.suse.com/1097779

--