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Fencer Vulns
low 3.9

CVE-2018-1123 json

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

published 2018-05-23 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-11767

cvss
3.9
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
8.7%
EPSS 8.7% chance of exploitation in 30 days, percentile 95%
public exploits
1
Exploit-DB

Summary

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).

Patch / fix

  • procps-ng_project procps-ng 3.3.15
  • procps Debian 14, Debian 13, Debian 12 2:3.3.15-1

debian advisories DEBIAN-CVE-2018-1123

  • procps Ubuntu 14.04 LTS 1:3.3.9-1ubuntu2.3
  • procps Ubuntu 16.04 LTS 2:3.3.10-4ubuntu2.4
  • procps Ubuntu 18.04 LTS 2:3.3.12-3ubuntu1.1

ubuntu advisories UBUNTU-CVE-2018-1123

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • procps SLE Module for Basesystem 15 SP1, SLE Module for Basesystem 15 3.3.15-7.7.26
  • procps SLES 12 SP4, SLES 12 SP3, SLES 12 SP2-BCL +13 more 3.3.9-11.18.1
  • procps SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 +1 more 3.3.9-11.14.1
  • procps SLES for SAP 11 SP4, SLES 11 SP4 3.2.7-152.31.1
  • procps SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 +1 more 3.3.9-11.11.1

suse advisories SUSE-SU-2019:2730-1SUSE-SU-2019:0450-2SUSE-SU-2019:0450-1SUSE-SU-2018:2451-2SUSE-SU-2018:2042-1SUSE-SU-2018:1836-1

  • procps openSUSE Tumbleweed 3.3.17-5.2
  • procps openSUSE Leap 15.0 3.3.15-lp150.5.3.1
  • procps openSUSE Leap 15.1 3.3.15-lp151.6.3.1

opensuse advisories openSUSE-SU-2024:11195-1openSUSE-SU-2019:2379-1openSUSE-SU-2019:2376-1

  • procps-ng Arch Linux 3.3.15-1

arch linux advisories AVG-705

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-1123 updated cvss 3.9

procps: denial of service in ps via mmap buffer overflow

  • Red Hat Enterprise Linux 5 procps Red Hat Enterprise Linux 6 procps Red Hat Enterprise Linux 7 procps-ng, procps-ng-i18n
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 8 procps-ng, procps-ng-i18n
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. Published
  2. First public exploit (EDB-44806)

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
10 mo ago

Exploit prediction

8.74% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-44806 Procps-ng - Multiple Vulnerabilities local, 2018-05-30
  • qualys.com https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 3.9 CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • [UNKNOWN] procps-ng, procps

Classification

Weakness
  • CWE-122 Heap-based Buffer Overflow
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.