openSUSE Security Update: Security update for libressl ______________________________________________________________________________ Announcement ID: openSUSE-SU-2017:1211-1 Rating: moderate References: #1019334 #968050 Cross-References: CVE-2016-0702 CVE-2016-7056 Affected Products: openSUSE Leap 42.2 ______________________________________________________________________________ An update that fixes two vulnerabilities is now available. Description: This update for libressl to version 2.5.1 fixes the following issues: These security issues were fixed: - CVE-2016-0702: Prevent side channel attack on modular exponentiation (boo#968050). - CVE-2016-7056: Avoid a side-channel cache-timing attack that can leak the ECDSA private keys when signing (boo#1019334). These non-security issues were fixed: - Detect zero-length encrypted session data early - Curve25519 Key Exchange support. - Support for alternate chains for certificate verification. - Added EVP interface for MD5+SHA1 hashes - Fixed DTLS client failures when the server sends a certificate request. - Corrected handling of padding when upgrading an SSLv2 challenge into an SSLv3/TLS connection. - Allowed protocols and ciphers to be set on a TLS config object in libtls. For additional changes please refer to the changelog. Patch Instructions: To install this openSUSE Security Update use YaST online_update. Alternatively you can run the command listed for your product: - openSUSE Leap 42.2: zypper in -t patch openSUSE-2017-561=1 To bring your system up-to-date, use "zypper patch". Package List: - openSUSE Leap 42.2 (i586 x86_64): libcrypto41-2.5.3-5.3.1 libcrypto41-debuginfo-2.5.3-5.3.1 libressl-2.5.3-5.3.1 libressl-debuginfo-2.5.3-5.3.1 libressl-debugsource-2.5.3-5.3.1 libressl-devel-2.5.3-5.3.1 libssl43-2.5.3-5.3.1 libssl43-debuginfo-2.5.3-5.3.1 libtls15-2.5.3-5.3.1 libtls15-debuginfo-2.5.3-5.3.1 - openSUSE Leap 42.2 (noarch): libressl-devel-doc-2.5.3-5.3.1 - openSUSE Leap 42.2 (x86_64): libcrypto41-32bit-2.5.3-5.3.1 libcrypto41-debuginfo-32bit-2.5.3-5.3.1 libressl-devel-32bit-2.5.3-5.3.1 libssl43-32bit-2.5.3-5.3.1 libssl43-debuginfo-32bit-2.5.3-5.3.1 libtls15-32bit-2.5.3-5.3.1 libtls15-debuginfo-32bit-2.5.3-5.3.1 References: https://www.suse.com/security/cve/CVE-2016-0702.html https://www.suse.com/security/cve/CVE-2016-7056.html https://bugzilla.suse.com/1019334 https://bugzilla.suse.com/968050