Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2018-5407 |
CWE-ID | CWE-208 |
Exploitation vector | Local |
Public exploit | Public exploit code for vulnerability #1 is available. |
Vulnerable software Subscribe |
OpenSSL Server applications / Encryption software |
Vendor | OpenSSL Software Foundation |
Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU15723
Risk: Low
CVSSv3.1: 4.4 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:U/RC:C]
CVE-ID: CVE-2018-5407
CWE-ID:
CWE-208 - Information Exposure Through Timing Discrepancy
Exploit availability: Yes
DescriptionThe vulnerability allows a physical attacker to obtain potentially sensitive information.
The vulnerability exists due to due to execution of engine sharing on SMT (e.g.Hyper-Threading) architectures when improper handling of information by the processor. A physical attacker can construct a timing side channel to hijack information from processes that are running in the same core.
Note: the vulnerability has been dubbed as PortSmash microarchitecture bug.
MitigationUpdate to version 1.1.0i.
Vulnerable software versionsOpenSSL: 1.1.0 - 1.1.0h
External linkshttp://www.openssl.org/news/secadv/20181112.txt
Q & A
Can this vulnerability be exploited remotely?
No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.