CVE-2018-1124: canonical ubuntu_linux Heap-based Buffer Overflow
CVSS: 7.8v3.1HighModified
AliasesRHSA-2019:2401UBUNTU-CVE-2018-1124DEBIAN-CVE-2018-1124
Published 23-05-2018Last modified 18-12-2025
Vulnerability summary
CVE-2018-1124 is a high (CVSS 7.8) Heap-based Buffer Overflow vulnerability in canonical ubuntu_linux. EPSS estimates a 1.90% chance of exploitation in the next 30 days, higher than 79.3% of scored vulnerabilities. 2 public exploits are recorded.
CVSS score
7.8/10
010
High · v3.1 (NVD)EPSS score
1.90%
0%100%
Low · -0.04 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2reference, exploit-database
Advisory lineage
Upstream 0 · Downstream 18 · Related 10Timeline
- 23-05-2018PublishedVulnerability first disclosed.
- 18-12-2025Last modifiedVulnerability information updated.
Description
procps-ng before version 3.3.15 is vulnerable to multiple integer overflows leading to a heap corruption in file2strvec function. This allows a privilege escalation for a local attacker who can create entries in procfs by starting processes, which could result in crashes or arbitrary code execution in proc utilities run by other users.
CVSS metrics
8 scores · 5 sources · 3 versionsHigh 7.8Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
High 7.3Preferred score · CVE.org (CNA)
CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:HSources4 sources · 7.3–7.8
- NVDNIST7.3HighCVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
- OSV · Red hatEcosystem advisory · calculated7.3HighCVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HDiffers
Medium 4.6Preferred score · NVD (NIST)
AV:L/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.90%
Chance of exploitation in the next 30 days
Percentile
79%
Versus all other CVEs
30-day change
-0.04 pp
From 1.94% on 18-09-2026
18-09-202618-10-2026
EPSS score1.90%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundExploit Reference (qualys.com)
Maturity: unknown
Procps-ng - Multiple Vulnerabilities
Maturity: poc
Weaknesses
CWE · root cause- CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
- CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Redhat8 products
- enterprise_linuxEOL6.0 | 7.0 | 7.5
- enterprise_linux_desktop6.0 | 7.0
- enterprise_linux_server6.0 | 7.0
- enterprise_linux_workstation6.0 | 7.0
- procps-ng< 0:3.3.10-10.el7_3.1
Debian2 products
- procps< 2:3.3.15-1
- debian_linuxEOL7.0 | 8.0 | 9.0
[unknown]1 product
- procps-ngprocps-ng 3.3.15
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 17.10 | 18.04
Opensuse1 product
- leapEOL15.0 | 15.1
Procps-ng_project1 product
- procps-ng< 3.3.15
Schneider-electric1 product
Ubuntu1 product
- procps< 1:3.3.9-1ubuntu2.3 | < 2:3.3.10-4ubuntu2.4 | < 2:3.3.12-3ubuntu1.1
8 vendors · 16 products
References
32 links- bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1124X Refsource CONFIRMIssue TrackingThird Party Advisory
- lists.debian.org/debian-lts-announce/2018/05/msg00021.htmlMailing ListX Refsource MLISTThird Party Advisory
Show all 32 references
- www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txtX Refsource MISCExploitThird Party AdvisoryARTICLEREPORT
- access.redhat.com/errata/RHSA-2019:2401Vendor AdvisoryX Refsource REDHATThird Party AdvisoryAdvisory
- lists.opensuse.org/opensuse-security-announce/2019-10/msg00058.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-10/msg00059.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
