SB2018112201 - Slackware Linux update for openssl

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Main Vulnerability Database SB2018112201

SB2018112201 - Slackware Linux update for openssl

Published: November 22, 2018

Security Bulletin ID SB2018112201
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Physical access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Side-channel attack (CVE-ID: CVE-2018-5407)

The vulnerability allows a physical attacker to obtain potentially sensitive information.

The vulnerability exists due to due to execution of engine sharing on SMT (e.g.Hyper-Threading) architectures when improper handling of information by the processor. A physical attacker can construct a timing side channel to hijack information from processes that are running in the same core.

Note: the vulnerability has been dubbed as PortSmash microarchitecture bug.


2) Information disclosure (CVE-ID: CVE-2018-0734)

The vulnerability allows a local attacker to obtain potentially sensitive information.

The vulnerability exists due to unspecified flaw in Digital Signature Algorithm (DSA). A local attacker can conduct a timing side-channel attack and recover the private key, which could be used to conduct further attacks.


Remediation

Install update from vendor's website.

References