SB2018051744 - Privilege escalation in xen (Alpine package)
Published: May 17, 2018
Security Bulletin ID
SB2018051744
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Privilege escalation (CVE-ID: CVE-2018-8897)
The vulnerability allows a local attacker to gain elevated privileges on the target system.The vulnerability exists due to improper implementation of Intel 64 and IA-32 Architectures Software Developer's Manual (SDM) on multiple system kernels, which results in an unexpected behavior for #DB exceptions that are deferred by MOV SS or POP SS. A local user can execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=cf5828feef63ab62588f29482b15001535c73719
- https://git.alpinelinux.org/aports/commit/?id=66ff4f8a6b71dd204bc568c21c45941d612402c2
- https://git.alpinelinux.org/aports/commit/?id=96018bf2841ac59b632f6d84ad6247b5b825dc3a
- https://git.alpinelinux.org/aports/commit/?id=5f72054ca4ac3f0f8f05c17a83a9c203f580bddc
- https://git.alpinelinux.org/aports/commit/?id=d2a71459869989207ef392e3d8338330ee055a7f
- https://git.alpinelinux.org/aports/commit/?id=9a8ee8c0046132a4ccaab5cffc615967367db70d
- https://git.alpinelinux.org/aports/commit/?id=9bdda5f2061773ab7f74bacd75ba922ce5fef8ac