What is CVE-2018-5803?

CVE-2018-5803 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Improper Input Validation flaw (CWE-20). CVE-2018-5803 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2018-5803?

CVE-2018-5803 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2018-5803?

No patch is currently available for CVE-2018-5803. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2018-5803 actively exploited?

CVE-2018-5803 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2018-5803

Medium

In the Linux Kernel before version 4.15.8, 4.14.25, 4.9.87, 4.4.121, 4.1.51, and 3.2.102, an error in the "_sctp_make_chunk()" function (net/sctp/sm_make_chunk.c) when handling SCTP packets length can be exploited to cause a kernel crash.

Package Linux Kernel

Published 2018-06-12

Last modified 2024-11-21

CVSS version 3.0

Patch available

Awaiting data

CVSS 3.0 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-20

CVE-2018-5803 is a Improper Input Validation vulnerability

What is Improper Input Validation?

The product receives input but does not validate it correctly, allowing attackers to craft inputs that cause unexpected behavior. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2018-5803 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Red Hat
https://access.redhat.com/errata/RHSA-2018:1854

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2018:2948

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2018:3083

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2018:3096

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2019:0641

Third Party Advisory
Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.102

Vendor Advisory
Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.1.51

Vendor Advisory
Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.25

Vendor Advisory
Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.15.8

Vendor Advisory
Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.121

Vendor Advisory
Kernel.org
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.87

Vendor Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2018/05/msg00000.html

Third Party Advisory
Secuniaresearch
https://secuniaresearch.flexerasoftware.com/advisories/81331/

Third Party Advisory
Secuniaresearch
https://secuniaresearch.flexerasoftware.com/secunia_research/2018-2/

Third Party Advisory
Ubuntu Security
https://usn.ubuntu.com/3654-1/

Third Party Advisory
Ubuntu Security
https://usn.ubuntu.com/3654-2/

Third Party Advisory
Ubuntu Security
https://usn.ubuntu.com/3656-1/

Third Party Advisory
Ubuntu Security
https://usn.ubuntu.com/3697-1/

Third Party Advisory
Ubuntu Security
https://usn.ubuntu.com/3697-2/

Third Party Advisory
Ubuntu Security
https://usn.ubuntu.com/3698-1/

Third Party Advisory
Ubuntu Security
https://usn.ubuntu.com/3698-2/

Third Party Advisory
Debian Security
https://www.debian.org/security/2018/dsa-4187

Third Party Advisory
Debian Security
https://www.debian.org/security/2018/dsa-4188

Third Party Advisory
Spinics
https://www.spinics.net/lists/linux-sctp/msg07036.html

Mailing List Third Party Advisory
Spinics
https://www.spinics.net/lists/netdev/msg482523.html

Mailing List Third Party Advisory
Kernel patch commit
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?id=07f2c7ab6f8d0a7e7c5764c4e6cc9c52951b9d9c
Patch

Details

CVE ID CVE-2018-5803

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.0

Published 2018-06-12

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2018-5803?

CVE-2018-5803 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Improper Input Validation flaw (CWE-20) . CVE-2018-5803 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2018-5803?

CVE-2018-5803 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.0). The vector string is CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2018-5803?

No patch is currently available for CVE-2018-5803. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2018-5803 actively exploited?

No — CVE-2018-5803 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Improper Input Validation (CWE-20)?

The product receives input but does not validate it correctly, allowing attackers to craft inputs that cause unexpected behavior. View CWE-20 on MITRE CWE →