CVE Vulnerabilities

CVE-2018-0493

Use After Free

Published: Apr 03, 2018 | Modified: Nov 21, 2024
CVSS 3.x
7.2
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
6.5 MEDIUM
AV:N/AC:L/Au:S/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu
MEDIUM

remctld in remctl before 3.14, when an attacker is authorized to execute a command that uses the sudo option, has a use-after-free that leads to a daemon crash, memory corruption, or arbitrary command execution.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

Name Vendor Start Version End Version
Remctl Eyrie * 3.14 (excluding)
Remctl Ubuntu artful *
Remctl Ubuntu bionic *
Remctl Ubuntu cosmic *
Remctl Ubuntu devel *
Remctl Ubuntu disco *
Remctl Ubuntu eoan *
Remctl Ubuntu esm-apps/bionic *
Remctl Ubuntu esm-apps/focal *
Remctl Ubuntu esm-apps/jammy *
Remctl Ubuntu esm-apps/noble *
Remctl Ubuntu esm-apps/xenial *
Remctl Ubuntu focal *
Remctl Ubuntu groovy *
Remctl Ubuntu hirsute *
Remctl Ubuntu impish *
Remctl Ubuntu jammy *
Remctl Ubuntu kinetic *
Remctl Ubuntu lunar *
Remctl Ubuntu mantic *
Remctl Ubuntu noble *
Remctl Ubuntu oracular *
Remctl Ubuntu plucky *
Remctl Ubuntu questing *
Remctl Ubuntu trusty *
Remctl Ubuntu upstream *
Remctl Ubuntu xenial *

Potential Mitigations

References