SB2018090635 - Information disclosure in xen (Alpine package)
Published: September 6, 2018
Security Bulletin ID
SB2018090635
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Information disclosure (CVE-ID: CVE-2018-3646)
The vulnerability allows an adjacent attacker to obtain potentially sensitive information on the target system.
The weakness exists on the systems with microprocessors utilizing speculative execution and address translations due to an error in Hypervisor. An adjacent attacker can access information residing in the L1 data cache via a terminal page fault and a side-channel analysis.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=b1098f74cfa616c0046ba6c5f2d032ac2f1d8e02
- https://git.alpinelinux.org/aports/commit/?id=3157c8cf385f659174a6d95a9218bc3281359513
- https://git.alpinelinux.org/aports/commit/?id=fa4aef12fe69b28f195024708e67ea7e48e9fca6
- https://git.alpinelinux.org/aports/commit/?id=8a2e635d73f2f09c768259b4730dcf3f55d0ed93
- https://git.alpinelinux.org/aports/commit/?id=ca1b59327d93bdc40e475877934ab83be23847f1
- https://git.alpinelinux.org/aports/commit/?id=74dce6e0451466b8eb5078660886cc226f9704f4