SB2017080790 - Privilege escalation in xen (Alpine package)
Published: August 7, 2017
Security Bulletin ID
SB2017080790
CSH 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 vulnerability.
1) Privilege escalation (CVE-ID: CVE-2017-10915)
CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local attacker to gain elevated privileges.
The weakness exists due to a race condition when managing page references by the shadow-paging feature.. A local OS attacker can gain Xen privileges on the target system.
Successful exploitation of the vulnerability results in privilege escalation.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=777808728eee590185d5d0f60357c3e334fa40cd
- https://git.alpinelinux.org/aports/commit/?id=88fbbb90ca25cd6378753538feb327abf36a30ac
- https://git.alpinelinux.org/aports/commit/?id=91aea7ba80331c34e950b9ccb02e757d4471325c
- https://git.alpinelinux.org/aports/commit/?id=605bcdc44def7408f05991fd6ecf6f7dfe7e683c
- https://git.alpinelinux.org/aports/commit/?id=2e37a309d6db43d6ec74cb76058f38a9060be22a