Privilege escalation in xen (Alpine package)
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2017-8905 |
| CWE-ID | CWE-20 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
xen (Alpine package) Operating systems & Components / Operating system package or component |
| Vendor | Alpine Linux Development Team |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Privilege escalation
EUVDB-ID: #VU6845
Risk: Low
CVSSv3.1: 4.6 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-8905
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to gain elevated privileges on the target system.
The weakness exists due to insufficient validation of user-supplied input. A local attacker can use a failsafe callback to modify part of a physical memory page, execute arbitrary code on the host OS with elevated privileges.
Successful exploitation of the vulnerability may result in privilege escalation.
Install update from vendor's website.
Vulnerable software versionsxen (Alpine package): 4.5.0-r0 - 4.5.5-r1
External linkshttp://git.alpinelinux.org/aports/commit/?id=379c5299d65499022d1f9338b6042ef5f6008b52
http://git.alpinelinux.org/aports/commit/?id=c12d6f2d2fc4ffae930a97f25ade837b85e48808
http://git.alpinelinux.org/aports/commit/?id=7f989732c4db2c7fa917bf58b0dd9b931dc2b9a5
http://git.alpinelinux.org/aports/commit/?id=231b8648691a0c1f456d8f87e56bd6480fb4a0bc
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
