Public Date:
1575474: CVE-2018-1123 procps-ng, procps: denial of service in ps via mmap buffer overflow
Due to incorrect accounting when decoding and escaping Unicode data in procfs, ps is vulnerable to overflowing an mmap()ed region when formatting the process list for display. Since ps maps a guard page at the end of the buffer, impact is limited to a crash.

Find out more about CVE-2018-1123 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v3 metrics

NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.

CVSS3 Base Score 3.9
CVSS3 Base Metrics CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction Required
Scope Unchanged
Confidentiality None
Integrity Impact Low
Availability Impact Low

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 8 procps-ng Not affected
Red Hat Enterprise Linux 7 procps-ng Will not fix
Red Hat Enterprise Linux 6 procps Will not fix
Red Hat Enterprise Linux 5 procps Will not fix
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.


Red Hat would like to thank Qualys Research Labs for reporting this issue.

External References

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