Denial of Service Vulnerability in Linux Kernel by Linux Foundation
CVE-2018-1120

2.8LOW

Key Information:

Vendor

[unknown]

Status
Kernel
Vendor
CVE Published:
20 June 2018

Badges

👾 Exploit Exists

What is CVE-2018-1120?

A significant flaw exists in the Linux kernel that can be exploited through the mmap() function when applied to a FUSE-backed file. This vulnerability enables attackers to manipulate a process's memory containing command line arguments or environment strings. As a direct consequence, utilities like ps, w, and any programs that read from /proc//cmdline or /proc//environ may suffer from an indefinite blockage or controlled delays, potentially leading to denial of service attacks. This behavior can be leveraged as a synchronization mechanism during larger attack campaigns.

Affected Version(s)

kernel kernel 4.17

References

https://usn.ubuntu.com/3752-2/
vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2018:3083
vendor-advisoryx_refsource_REDHAT
http://www.securityfocus.com/bid/104229
vdb-entryx_refsource_BID

CVSS V3.1

Score:
2.8
Severity:
LOW
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

CVSS V3.0

Score:
2.8
Severity:
LOW
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.