CVE-2018-1123 Memory corruption in procps-ng, procps

What is CVE-2018-1123?

CVE-2018-1123 is a low-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 23 May 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official 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).

Weakness: CWE-119, CWE-122

Which versions are affected by CVE-2018-1123?

It affects 3 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Procps-Ng Project Procps-Ng.

How do I fix CVE-2018-1123?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2018-1123 being exploited?

There is no known exploitation of CVE-2018-1123 in the wild and no public exploit code.

Public exploit code: 2 Exploit-DB entries.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-1123, GHSA-3vgv-cg7r-qgvj, UBUNTU-CVE-2018-1123.