CVE-2018-1126

Exp

procps-ng before version 3.3.15 is vulnerable to an incorrect integer size in proc/alloc.* leading to truncation/integer overflow issues. This flaw is related to CVE-2018-1124.

Published: 2018-05-23 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-1126 is rated High Exploit Risk (63.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.99%). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.67% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2018-1126

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2018-1126

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.33% 1.99% +1.67%
2 2026-06-06 0.50% 0.33% -0.18%
3 2026-01-25 — 0.50% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-1126

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.8 3.0 MEDIUM
CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 1.3 3.4 [email protected]
9.8 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2018-1126

OS Trackers for CVE-2018-1126

vendor priority summary link
debian not yet assigned CVE-2018-1126 not yet assigned priority: Debian including 1 source packages (procps), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-1126
redhat medium — https://access.redhat.com/security/cve/CVE-2018-1126
suse medium CVE-2018-1126 severity moderate: SUSE including 496 source package names (0.1.0:libprocps7-3.3.15-7.7.26, 0.1.0:procps-3.3.15-7.7.26, …), 961 product×package rows across 486 product lines (Container bci/bci-init, Container bci/gcc, … (486 product lines)): Fixed 804, Known Affected 157. https://www.suse.com/security/cve/CVE-2018-1126/
ubuntu medium CVE-2018-1126 medium priority: Ubuntu including 1 source packages (procps), 5 status rows across 5 suites (artful, bionic, trusty, upstream, xenial): released 5. https://ubuntu.com/security/CVE-2018-1126

Affected software / configurations for CVE-2018-1126

Vendor Product Version Raw CPE
procps-ng_project procps-ng < 3.3.15 cpe:2.3:a:procps-ng_project:procps-ng:*:*:*:*:*:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 17.10 cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
canonical ubuntu_linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
debian debian_linux 7.0 cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
redhat enterprise_linux 7.0 cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 7.0 cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 7.0 cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 7.5 cpe:2.3:o:redhat:enterprise_linux_server:7.5:*:*:*:*:*:*:*
redhat enterprise_linux_server_aus 6.6 cpe:2.3:o:redhat:enterprise_linux_server_aus:6.6:*:*:*:*:*:*:*
redhat enterprise_linux_server_tus 6.6 cpe:2.3:o:redhat:enterprise_linux_server_tus:6.6:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 7.0 cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
schneider-electric struxureware_data_center_expert < 7.6.0 cpe:2.3:a:schneider-electric:struxureware_data_center_expert:*:*:*:*:*:*:*:*

References for CVE-2018-1126

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00058.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00059.html
http://seclists.org/oss-sec/2018/q2/122 Mailing List Third Party Advisory
http://www.securityfocus.com/bid/104214 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1041057 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:1700 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1777 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:1820 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2267 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2268 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1944
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1126 Issue Tracking Third Party Advisory
https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0 Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/05/msg00021.html Third Party Advisory
https://usn.ubuntu.com/3658-1/ Third Party Advisory
https://usn.ubuntu.com/3658-2/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4208 Third Party Advisory
https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt Exploit Third Party Advisory
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