Race condition in xen (Alpine package)
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2019-17346 |
| CWE-ID | CWE-362 |
| 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) Race condition
EUVDB-ID: #VU17901
Risk: Low
CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-17346
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition when processing TLB flushing on PCID-enabled guest system. A local user of guest operating system can crash a hosts system or execute arbitrary code on other guests.
Only x86 systems with at least one PCID-enabled PV guest are vulnerable.
MitigationInstall update from vendor's website.
Vulnerable software versionsxen (Alpine package): 4.7.6-r0 - 4.11.4-r0
External linkshttp://git.alpinelinux.org/aports/commit/?id=e42bcd9d2c39e861c980adebf91418ddbe72bd21
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.
