Multiple vulnerabilities in FreeBSD
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2019-15878 CVE-2019-15879 CVE-2019-15880 |
| CWE-ID | CWE-416 CWE-20 |
| Exploitation vector | 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 3 vulnerabilities.
1) Use-after-free
EUVDB-ID: #VU27861
Risk: Low
CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-15878
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to the SCTP layer does improper checking when an application tries to update a shared key. A local user can trigger a use-after-free error by specific sequences of updating shared keys and closing the SCTP association and cause a kernel panic.
Install updates from vendor's website.
Vulnerable software versionsFreeBSD: 11.3 - 12.1
External linkshttp://www.freebsd.org/security/advisories/FreeBSD-SA-20:14.sctp.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) Use-after-free
EUVDB-ID: #VU27862
Risk: Low
CVSSv3.1: 8.6 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-15879
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition in cryptodev module. A local user can run a specially crafted application to trigger a use-after-free error and overwrite arbitrary kernel memory.
Install updates from vendor's website.
Vulnerable software versionsFreeBSD: 11.0 - 12.1
External linkshttp://www.freebsd.org/security/advisories/FreeBSD-SA-20:15.cryptodev.asc
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Input validation error
EUVDB-ID: #VU27863
Risk: Low
CVSSv3.1: 4.9 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-15880
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied MAC key length in cryptodev module. A local user can pass an overly long MAC key and cause kernel panic.
Install updates from vendor's website.
Vulnerable software versionsFreeBSD: 12.1
External linkshttp://www.freebsd.org/security/advisories/FreeBSD-SA-20:16.cryptodev.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.
