Denial of service in Linux kernel SCTP

1) Input validation error

EUVDB-ID: #VU70466

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-3874

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to the SCTP socket buffer used by a userspace application is not accounted by the cgroups subsystem. A local user can perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3874
https://security.netapp.com/advisory/ntap-20190411-0003/
https://usn.ubuntu.com/3981-1/
https://usn.ubuntu.com/3980-1/
https://usn.ubuntu.com/3979-1/
https://usn.ubuntu.com/3982-2/
https://usn.ubuntu.com/3982-1/
https://usn.ubuntu.com/3980-2/
https://usn.ubuntu.com/3981-2/
https://access.redhat.com/errata/RHSA-2019:3517
https://access.redhat.com/errata/RHSA-2019:3309
https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
https://www.oracle.com/security-alerts/cpuApr2021.html

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.