Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2018-18281 |
CWE-ID | CWE-284 |
Exploitation vector | Local |
Public exploit | N/A |
Vulnerable software Subscribe |
BIG-IP Hardware solutions / Firmware |
Vendor | F5 Networks |
Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU15643
Risk: Low
CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-18281
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a local user to bypass certain security restrictions.
The vulnerability exists due to improper access restrictions to memory when performing TLB flushes after dropping pagetable locks with mremap() syscall, A local user can access a physical page of a stale TLB entry after ftruncate() syscall is called to remove entries from the pagetables of a task that is in the middle of mremap() syscall.
Successful exploitation of the vulnerability may allow an attacker to gain access to sensitive information, stored in process memory.
MitigationInstall update from vendor's website.
Vulnerable software versionsBIG-IP: 13.1.0 - 16.1.2.1
External linkshttp://support.f5.com/csp/article/K36462841
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.