Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 5 |
CVE-ID | CVE-2019-5611 CVE-2019-5612 CVE-2019-5603 |
CWE-ID | CWE-20 CWE-399 CWE-125 CWE-264 |
Exploitation vector | Network |
Public exploit | Public exploit code for vulnerability #5 is available. |
Vulnerable software Subscribe |
FreeBSD Operating systems & Components / Operating system |
Vendor | FreeBSD Foundation |
Security Bulletin
This security bulletin contains information about 5 vulnerabilities.
EUVDB-ID: #VU20352
Risk: Medium
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: N/A
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass certain security restrictions.
The vulnerability exists due to incompatibility of firewall rules created with older versions of ipfw(8) utility that support jail keyword. The issue results in rules with the jail keyword are not applied, leading to potential unauthorized access to the services, protected by the firewall rules.
Install updates from vendor's website.
Vulnerable software versionsFreeBSD: 11.3
External linkshttp://www.freebsd.org/security/advisories/FreeBSD-EN-19:17.ipfw.asc
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU20353
Risk: Medium
CVSSv3.1: 4.7 [CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: N/A
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to absent handling of certain instructions in bhyve(8). A remote attacker with access to guest operating system can use the unsupported instructions to crash the bhyve hypervisor.
MitigationInstall updates from vendor's website.
Vulnerable software versionsFreeBSD: 11.0 - 12.0
External linkshttp://www.freebsd.org/security/advisories/FreeBSD-EN-19:16.bhyve.asc
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated privileged user via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU20354
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-5611
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a missing check in the code of m_pulldown(9) when processing IPv6 packets. A remote attacker can send specially crafted IPv6 traffic to the affected system and perform denial of service (DoS) attack.
Install updates from vendor's website.
Vulnerable software versionsFreeBSD: 11.0 - 12.0
External linkshttp://www.freebsd.org/security/advisories/FreeBSD-SA-19:22.mbuf.asc
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU20355
Risk: Low
CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-5612
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in the kernel driver for /dev/midistat. A local user can trigger out-of-bounds read error and read kernel memory contents.
MitigationInstall updates from vendor's website.
Vulnerable software versionsFreeBSD: 11.0 - 12.0
External linkshttp://www.freebsd.org/security/advisories/FreeBSD-SA-19:23.midi.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.
EUVDB-ID: #VU20356
Risk: Low
CVSSv3.1: 7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2019-5603
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: Yes
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a reference count overflow within the mqueuefs(5). A local user can obtain access to files, directories, sockets opened by processes owned by other users, including access to files outside of the jail. A local user can run a specially crafted application to gain elevated privileges on the system.
Install updates from vendor's website.
Vulnerable software versionsFreeBSD: 11.0 - 12.0
External linkshttp://packetstormsecurity.com/files/153752/FreeBSD-Security-Advisory-FreeBSD-SA-19-15.mqueuefs.html
http://security.FreeBSD.org/advisories/FreeBSD-SA-19:15.mqueuefs.asc
http://security.FreeBSD.org/advisories/FreeBSD-SA-19:24.mqueuefs.asc
http://security.netapp.com/advisory/ntap-20190814-0003/
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. However, proof of concept for this vulnerability is available.