Information disclosure in FreeBSD
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2018-3620 CVE-2018-3646 |
| CWE-ID | CWE-200 |
| Exploitation vector | Local network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
FreeBSD Operating systems & Components / Operating system |
| Vendor | FreeBSD Foundation |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Side-channel attack
EUVDB-ID: #VU14411
Risk: Low
CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-3620
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a local attacker to obtain potentially sensitive information.
The vulnerability exists due to an error in systems with microprocessors utilizing speculative execution and address translations . A local attacker can trigger terminal page fault, conduct side-channel attack and gain access to potentially sensitive information residing in the L1 data cache.
Install update from vendor's website.
Vulnerable software versionsFreeBSD: 5.3 - 11.1
External linkshttp://www.freebsd.org/security/advisories/FreeBSD-SA-18:09.l1tf.asc
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.
2) Side-channel attack
EUVDB-ID: #VU14412
Risk: Low
CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-3646
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows an adjacent attacker to obtain potentially sensitive information.
The vulnerability exists due to an error in systems with microprocessors utilizing speculative execution and address translations. An adjacent attacker with guest OS privilege can trigger terminal page fault, conduct side-channel attack and gain access to potentially sensitive information residing in the L1 data cache.
Install update from vendor's website.
Vulnerable software versionsFreeBSD: 5.3 - 11.1
External linkshttp://www.freebsd.org/security/advisories/FreeBSD-SA-18:09.l1tf.asc
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.
