Ensure system wide crypto policy macs are configured

보통레벨 1자동linux

설명

Message Authentication Code (MAC) algorithm is a family of cryptographic functions that is parameterized by a symmetric key. Each of the functions can act on input data (called a “message”) of variable length to produce an output value of a specified length. The output value is called the MAC of the input message. A MAC algorithm can be used to provide data-origin authentication and data-integrity protection

점검 방법

감사 방식: 셸 명령

shell

alt0() { command -v grep >/dev/null 2>&1 || { echo "step1: grep not installed"; return 1; }; o=$(bash -c 'grep -Pi -- '"'"'^\h*mac\h*=\h*([^#\n\r]+)?-128\b'"'"' /etc/crypto-' 2>&1); printf '%s\n' "$o" | tr -s ' \t' '  ' | sed 's/^ //;s/ $//' | grep -Fxq -- policies/state/CURRENT.pol || { echo step1: missing policies/state/CURRENT.pol; return 1; }; }; if alt0; then echo compliant; fi

예상 출력: compliant

조치 방법

조치 방식: 가이드 또는 인프라 패치

Note: • The commands below are written for the included DEFAULT system-wide crypto policy. If another policy is in use and follows local site policy, replace DEFAULT with the name of your system-wide crypto policy. • Multiple subpolicies may be assigned to a policy as a colon separated list. e.g. DEFAULT:NO-SHA1:NO-SSHCBC • Subpolicies: o Not included in the update-crypto-policies --set command will not be applied to the system wide crypto policy. o must exist before they can be applied to the system wide crypto policy. o .pmod file filenames must be in all upper case, upper case, e.g. NO- WEAKMAC.pmod, or they will not be read by the update-crypto-policies --set command. Create or edit a fi…

속성

운영 체제: rocky-10
태그: cis-convertedlinux
참고 자료: CIS Rocky Linux 10 Benchmark v1.0.0 - 1.6.3

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