SB2017022707 - Out-of-bounds read in xen (Alpine package)
Published: February 27, 2017
Security Bulletin ID
SB2017022707
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) Out-of-bounds read (CVE-ID: CVE-2017-2615)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA emulator support is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt copy in backward mode. A privileged user inside a guest could use this flaw to crash the QEMU process resulting in DoS or potentially execute arbitrary code on the host with privileges of QEMU process on the host.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=64053e93d1b2192473cc16b8719d43e6b1c036a6
- https://git.alpinelinux.org/aports/commit/?id=4fd42213196834bf5e7a33f83e9e6775606a9aba
- https://git.alpinelinux.org/aports/commit/?id=cbfc3b3f42666cb87df934d811bf788682a5f0cc
- https://git.alpinelinux.org/aports/commit/?id=108d798f522424e0e5c45a725d2b052458411614
- https://git.alpinelinux.org/aports/commit/?id=42fbf263cfee88faa3bdd4d91edbc34a0e6dd6a2
- https://git.alpinelinux.org/aports/commit/?id=da8fdc46be4a3e48a559102b6ff9f2cc78d4a37c