CCE-91912-6Platform: cpe:/o:ubuntu:ubuntu_linux:16.04 | Date: (C)2018-07-09 (M)2023-07-04 |
A core dump is the memory of an executable program. It is generally used to determine why a program aborted. It can also be used to glean confidential information from a core file. The system provides the ability to set a soft limit for core dumps, but this can be overridden by the user.
Rationale:
Setting a hard limit on core dumps prevents users from overriding the soft variable. If core dumps are required, consider setting limits for user groups (see limits.conf(5)). In addition, setting the fs.suid_dumpable variable to 0 will prevent setuid programs from dumping core. The apport service if active will override the fs.suid_dumpable variable setting and automatically create core dump reports. The whoopsie service monitors apport core dump reports and transmits them to Canonical.
Parameter:
[no/yes]
Technical Mechanism:
Add the following line to the /etc/security/limits.conf file.
* hard core 0
Add the following line to the /etc/sysctl.conf file.
fs.suid_dumpable = 0
Uninstall the apport and whoopsie packages or comment out any start lines in
/etc/init/apport.conf and /etc/init/whoopsie.conf files:
# start on runlevel [2345]
CCSS Severity: | CCSS Metrics: |
CCSS Score : 6.2 | Attack Vector: LOCAL |
Exploit Score: 2.5 | Attack Complexity: LOW |
Impact Score: 3.6 | Privileges Required: NONE |
Severity: MEDIUM | User Interaction: NONE |
Vector: AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | Scope: UNCHANGED |
| Confidentiality: HIGH |
| Integrity: NONE |
| Availability: NONE |
| |
References: Resource Id | Reference |
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SCAP Repo OVAL Definition | oval:org.secpod.oval:def:46173 |