Race condition in xen (Alpine package)
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-25599 |
| CWE-ID | CWE-362 |
| Exploitation vector | Network |
| 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 high risk vulnerability.
1) Race condition
EUVDB-ID: #VU46983
Risk: High
CVSSv3.1: 8.6 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-25599
Exploit availability: No
DescriptionThe vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists due to a race condition caused by uses of EVTCHNOP_reset (potentially by a guest on itself) or XEN_DOMCTL_soft_reset (by itself covered by XSA-77). A remote user on the PV guest can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the host system.
MitigationInstall update from vendor's website.
Vulnerable software versionsxen (Alpine package): 4.5.0-r0 - 4.14.0-r0
External linkshttp://git.alpinelinux.org/aports/commit/?id=f48590ae54ca9e0c3bf6b3fae3e6b065f14223e3
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
