openSUSE Security Update : libressl (openSUSE-2018-950)

Low Nessus Plugin ID 112264


The remote openSUSE host is missing a security update.


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

- 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

- Fixed a potential memory alignment crash in

SSL3_FLAGS_POP_BUFFER flags in write path, simplifying
IO paths.

- Removed SSL_OP_TLS_ROLLBACK_BUG buggy client

- Added const annotations to many existing APIs from
OpenSSL, making interoperability easier for downstream

- 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.


Update the affected libressl packages.

See Also

Plugin Details

Severity: Low

ID: 112264

File Name: openSUSE-2018-950.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2018/09/04

Modified: 2018/09/04

Dependencies: 12634

Risk Information

Risk Factor: Low

CVSS v2.0

Base Score: 1.9

Vector: CVSS2#AV:L/AC:M/Au:N/C:P/I:N/A:N

CVSS v3.0

Base Score: 4.7

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Vulnerability Information

CPE: p-cpe:/a:novell:opensuse:libcrypto43, p-cpe:/a:novell:opensuse:libcrypto43-32bit, p-cpe:/a:novell:opensuse:libcrypto43-32bit-debuginfo, p-cpe:/a:novell:opensuse:libcrypto43-debuginfo, p-cpe:/a:novell:opensuse:libressl, p-cpe:/a:novell:opensuse:libressl-debuginfo, p-cpe:/a:novell:opensuse:libressl-debugsource, p-cpe:/a:novell:opensuse:libressl-devel, p-cpe:/a:novell:opensuse:libressl-devel-32bit, p-cpe:/a:novell:opensuse:libssl45, p-cpe:/a:novell:opensuse:libssl45-32bit, p-cpe:/a:novell:opensuse:libssl45-32bit-debuginfo, p-cpe:/a:novell:opensuse:libssl45-debuginfo, p-cpe:/a:novell:opensuse:libtls17, p-cpe:/a:novell:opensuse:libtls17-32bit, p-cpe:/a:novell:opensuse:libtls17-32bit-debuginfo, p-cpe:/a:novell:opensuse:libtls17-debuginfo, cpe:/o:novell:opensuse:15.0

Patch Publication Date: 2018/09/03

Reference Information

CVE: CVE-2018-12434