SB2018010414 - Spectre side-channel attack in Mozilla Firefox
Published: January 4, 2018
Security Bulletin ID
SB2018010414
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Spectre side-channel attack (CVE-ID: N/A)
CWE-ID: CWE-385 - Covert Timing Channel
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to an error in Intel processor microcode, which can lead to timing side-channel attack and data extraction from modern CPUs.
The vulnerability is dubbed "Spectre". The PoC-code was created in JavaScript, which demonstrated possibility of the attack.
Remediation
Install update from vendor's website.