Security update for openssl-1_0_0

SUSE Security Update: Security update for openssl-1_0_0
Announcement ID: SUSE-SU-2018:2965-1
Rating: moderate
References: #1089039 #1097158 #1101470 #1104789 #1106197
Cross-References: CVE-2018-0732 CVE-2018-0737
Affected Products:
  • SUSE Linux Enterprise Module for Legacy Software 15

An update that solves two vulnerabilities and has three fixes is now available.

Description:

This update for openssl-1_0_0 to 1.0.2p fixes the following issues:
These security issues were fixed:

  • Prevent One&Done side-channel attack on RSA that allowed physically near attackers to use EM emanations to recover information (bsc#1104789)
  • CVE-2018-0737: The RSA Key generation algorithm has been shown to be vulnerable to a cache timing side channel attack. An attacker with sufficient access to mount cache timing attacks during the RSA key generation process could have recovered the private key (bsc#1089039)
  • CVE-2018-0732: During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server could have sent a very large prime value to the client. This caused the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack (bsc#1097158)
  • Make problematic ECDSA sign addition length-invariant
  • Add blinding to ECDSA and DSA signatures to protect against side channel attacks

This non-security issue was fixed:
  • Add openssl(cli) Provide so the packages that require the openssl binary can require this instead of the new openssl meta package (bsc#1101470)

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 Legacy Software 15:
    zypper in -t patch SUSE-SLE-Module-Legacy-15-2018-2095=1

Package List:

  • SUSE Linux Enterprise Module for Legacy Software 15 (aarch64 ppc64le s390x x86_64):
    • libopenssl-1_0_0-devel-1.0.2p-3.8.1
    • libopenssl1_0_0-1.0.2p-3.8.1
    • libopenssl1_0_0-debuginfo-1.0.2p-3.8.1
    • openssl-1_0_0-1.0.2p-3.8.1
    • openssl-1_0_0-debuginfo-1.0.2p-3.8.1
    • openssl-1_0_0-debugsource-1.0.2p-3.8.1

References: