Resource exhaustion in xen (Alpine package)
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2018-7540 |
| CWE-ID | CWE-400 |
| Exploitation vector | Local 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 medium risk vulnerability.
1) Resource exhaustion
EUVDB-ID: #VU10780
Risk: Medium
CVSSv3.1: 6.4 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-7540
CWE-ID:
CWE-400 - Resource exhaustion
Exploit availability: No
DescriptionThe vulnerability allows an adjacent authenticated attacker to cause a DoS condition on the target system.
The weakness exists due to non-preemptable L3/L4 pagetable freeing. An adjacent attacker can exhaust all available CPU resources and cause the service to crash.
Install update from vendor's website.
Vulnerable software versionsxen (Alpine package): 4.6.6-r3
External linkshttp://git.alpinelinux.org/aports/commit/?id=6f854a08591e446ab616d0aac83e843cddcff8a9
http://git.alpinelinux.org/aports/commit/?id=0cfa2abffc5ad51933b5969c177bd1c441ea06f2
http://git.alpinelinux.org/aports/commit/?id=a95df62881a771a994c4b38730c4c69b0bf07a0e
http://git.alpinelinux.org/aports/commit/?id=7a017e10fd6de2f5477c69120b540b2cd74652a1
http://git.alpinelinux.org/aports/commit/?id=1fb3325abc8bc3f37fa93c0663908c29e9154087
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
