Resource exhaustion in Linux Kernel
CVE-2018-17977
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (31.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Linux Kernel — versions 4.14.67
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/105539 (VDB Entry, Third Party Advisory, vdb-entry)
- www.openwall.com/lists/oss-security/2018/10/05/5 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-17977?
- CVE-2018-17977 is a medium-severity vulnerability in Linux Kernel, classified under Uncontrolled Resource Consumption. CVSS score: 4.4/10. Published 2018-10-08.
- How severe is CVE-2018-17977?
- Medium severity. CVSS v3 base score is 4.4 out of 10.
- Is CVE-2018-17977 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.