CVE-2018-1120
MediumA flaw was found affecting the Linux kernel before version 4.17. By mmap()ing a FUSE-backed file onto a process's memory containing command line arguments (or environment strings), an attacker can cause utilities from psutils or procps (such as ps, w) or any other program which makes a read() call to the /proc/<pid>/cmdline (or /proc/<pid>/environ) files to block indefinitely (denial of service) or for some controlled time (as a synchronization primitive for other attacks).
CVSS 3.0 score
5.3
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness type
CWE-122CVE-2018-1120 is classified as CWE-122
See CWE-122 on MITRE CWE for full details on this weakness type.
References
The following references provide additional information about CVE-2018-1120 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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Exploit Mailing List Third Party Advisory
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Securityfocushttp://www.securityfocus.com/bid/104229Third Party Advisory VDB Entry
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Third Party Advisory
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Third Party Advisory
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Third Party Advisory
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Mailing List Third Party Advisory
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Third Party Advisory
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Ubuntu Securityhttps://usn.ubuntu.com/3752-1/Third Party Advisory
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Ubuntu Securityhttps://usn.ubuntu.com/3752-2/Third Party Advisory
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Ubuntu Securityhttps://usn.ubuntu.com/3752-3/Third Party Advisory
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Ubuntu Securityhttps://usn.ubuntu.com/3910-1/
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Ubuntu Securityhttps://usn.ubuntu.com/3910-2/
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Exploit-DBhttps://www.exploit-db.com/exploits/44806/Exploit Third Party Advisory VDB Entry
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PatchKernel patch commithttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1120
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PatchKernel patch commithttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7f7ccc2ccc2e70c6054685f5e3522efa81556830
Frequently asked questions
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What is CVE-2018-1120?
CVE-2018-1120 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.3 out of 10 . CVE-2018-1120 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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What is the CVSS score for CVE-2018-1120?
CVE-2018-1120 has a CVSS score of 5.3 out of 10, rated Medium severity (CVSS 3.0). The vector string is
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H. -
Is there a patch available for CVE-2018-1120?
No patch is currently available for CVE-2018-1120. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
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Is CVE-2018-1120 actively exploited?
No — CVE-2018-1120 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.