SUSE Security Update: Security update for openssl-1_1
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Announcement ID:    SUSE-SU-2021:0955-2
Rating:             important
References:         #1183852 
Cross-References:   CVE-2021-3449
CVSS scores:
                    CVE-2021-3449 (NVD) : 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
                    CVE-2021-3449 (SUSE): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products:
                    SUSE Linux Enterprise Module for Certifications 15-SP3
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   An update that fixes one vulnerability is now available.

Description:

   This update for openssl-1_1 fixes the security issue:

   * CVE-2021-3449: An OpenSSL TLS server may crash if sent a maliciously
     crafted renegotiation ClientHello message from a client. If a TLSv1.2
     renegotiation ClientHello omits the signature_algorithms extension but
     includes a signature_algorithms_cert extension, then a NULL pointer
     dereference will result, leading to a crash and a denial of service
     attack. OpenSSL TLS clients are not impacted by this issue. [bsc#1183852]


Patch Instructions:

   To install this SUSE 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:

   - SUSE Linux Enterprise Module for Certifications 15-SP3:

      zypper in -t patch SUSE-SLE-Module-Certifications-15-SP3-2022-2389=1



Package List:

   - SUSE Linux Enterprise Module for Certifications 15-SP3 (aarch64 ppc64le s390x x86_64):

      libopenssl-1_1-devel-1.1.1d-11.20.1
      libopenssl1_1-1.1.1d-11.20.1
      libopenssl1_1-debuginfo-1.1.1d-11.20.1
      libopenssl1_1-hmac-1.1.1d-11.20.1
      openssl-1_1-1.1.1d-11.20.1
      openssl-1_1-debuginfo-1.1.1d-11.20.1
      openssl-1_1-debugsource-1.1.1d-11.20.1

   - SUSE Linux Enterprise Module for Certifications 15-SP3 (x86_64):

      libopenssl-1_1-devel-32bit-1.1.1d-11.20.1
      libopenssl1_1-32bit-1.1.1d-11.20.1
      libopenssl1_1-32bit-debuginfo-1.1.1d-11.20.1
      libopenssl1_1-hmac-32bit-1.1.1d-11.20.1

   - SUSE Linux Enterprise Module for Certifications 15-SP3 (noarch):

      openssl-1_1-doc-1.1.1d-11.20.1


References:

   https://www.suse.com/security/cve/CVE-2021-3449.html
   https://bugzilla.suse.com/1183852