CVE-2018-17977 — MEDIUM (4.4)

Vulnerability Description

The Linux kernel 4.14.67 mishandles certain interaction among XFRM Netlink messages, IPPROTO_AH packets, and IPPROTO_IP packets, which allows local users to cause a denial of service (memory consumption and system hang) by leveraging root access to execute crafted applications, as demonstrated on CentOS 7.

CVSS Score

4.4

MEDIUM

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Linux	Linux Kernel	4.14.67

Related Weaknesses (CWE)

CWE-400

References

http://www.securityfocus.com/bid/105539Third Party AdvisoryVDB Entry
https://www.openwall.com/lists/oss-security/2018/10/05/5Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/105539Third Party AdvisoryVDB Entry
https://www.openwall.com/lists/oss-security/2018/10/05/5Mailing ListThird Party Advisory

FAQ

What is CVE-2018-17977?

CVE-2018-17977 is a vulnerability with a CVSS score of 4.4 (MEDIUM). The Linux kernel 4.14.67 mishandles certain interaction among XFRM Netlink messages, IPPROTO_AH packets, and IPPROTO_IP packets, which allows local users to cause a denial of service (memory consumpti...

How severe is CVE-2018-17977?

CVE-2018-17977 has been rated MEDIUM with a CVSS base score of 4.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-17977?

Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.