Ensure core dumps are disabled

MittelStufe 1Automatisiertaix

Beschreibung

This change disables core dumps in the default user stanza of /etc/security/limits and also ensures the fullcore kernel parameter is set to false. The creation of core dumps can reveal pertinent system information, potentially even passwords, within the core file. The ability to create a core dump is also a vulnerability to be exploited by a hacker. Audit: automated read-only check derived from the CIS audit procedure; it prints "compliant" when the control is met.

So wird geprüft

Prüfmethode: Shell-Befehl

shell

command -v lssec >/dev/null 2>&1 || exit 1; command -v lsattr >/dev/null 2>&1 || exit 1; a=$(lssec -f /etc/security/limits -s default -a core -a core_hard 2>/dev/null) || exit 1; b=$(lsattr -El sys0 -a fullcore -F value 2>/dev/null) || exit 1; [ "$a" = "default core=0 core_hard=0" ] && [ "$b" = false ] && echo compliant || echo "$a fullcore=$b"

Erwartete Ausgabe: compliant

So wird behoben

Behebungsmethode: Anleitung oder Infrastruktur-Patch

chsec -f /etc/security/limits -s default -a core=0 -a core_hard=0; chdev -l sys0 -a fullcore=false

Eigenschaften

Betriebssysteme: Beliebig
Tags: aixhardening
Referenz: CIS IBM AIX 7 Benchmark v1.2.0 - 4.8.3 Ensure core dumps are disabled

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shell

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