fix echo under some shells
This commit is contained in:
Stéphane Lesimple
parent
0201b02313
commit
3b760822ff
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@ -11,27 +11,27 @@ pstatus()
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yellow) col="\033[103m\033[30m";;
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*) col="";;
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esac
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echo -n "$col$2\033[0m"
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[ -n "$3" ] && echo -n " ($3)"
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echo
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/bin/echo -ne "$col$2\033[0m"
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[ -n "$3" ] && /bin/echo -n " ($3)"
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/bin/echo
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}
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echo "Spectre and Meltdown mitigation detection tool v$VERSION"
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echo
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/bin/echo "Spectre and Meltdown mitigation detection tool v$VERSION"
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/bin/echo
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# SPECTRE 1
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echo "\033[1;34mCVE-2017-5753 [bounds check bypass] aka 'Spectre Variant 1'\033[0m"
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echo -n "* Kernel recompiled with LFENCE opcode insertion: "
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/bin/echo -e "\033[1;34mCVE-2017-5753 [bounds check bypass] aka 'Spectre Variant 1'\033[0m"
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/bin/echo -n "* Kernel recompiled with LFENCE opcode insertion: "
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pstatus yellow UNKNOWN "check not yet implemented"
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echo -n "> \033[46m\033[30mSTATUS:\033[0m "
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/bin/echo -ne "> \033[46m\033[30mSTATUS:\033[0m "
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pstatus yellow UNKNOWN "not implemented, but real answer is most probably VULNERABLE at this stage"
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# VARIANT 2
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echo
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echo "\033[1;34mCVE-2017-5715 [branch target injection] aka 'Spectre Variant 2'\033[0m"
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echo "* Mitigation 1"
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echo -n "* Hardware (CPU microcode) support for mitigation: "
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/bin/echo
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/bin/echo -e "\033[1;34mCVE-2017-5715 [branch target injection] aka 'Spectre Variant 2'\033[0m"
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/bin/echo "* Mitigation 1"
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/bin/echo -n "* Hardware (CPU microcode) support for mitigation: "
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if [ ! -e /dev/cpu/0/msr ]; then
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modprobe msr 2>/dev/null && insmod_msr=1
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fi
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@ -45,14 +45,14 @@ else
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pstatus red NO
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fi
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#dd if=/dev/cpu/0/msr of=/dev/null bs=1 count=8 skip=73 2>/dev/null
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#echo $?
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#/bin/echo $?
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fi
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if [ "$insmod_msr" = 1 ]; then
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rmmod msr 2>/dev/null
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fi
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echo -n "* Kernel support for IBRS: "
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/bin/echo -n "* Kernel support for IBRS: "
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if [ -e /sys/kernel/debug/sched_features ]; then
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mount -t debugfs debugfs /sys/kernel/debug 2>/dev/null && mounted_debugfs=1
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fi
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@ -64,7 +64,7 @@ else
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fi
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ibrs_enabled=$(cat /sys/kernel/debug/ibrs_enabled 2>/dev/null)
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echo -n "* IBRS enabled for Kernel space: "
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/bin/echo -n "* IBRS enabled for Kernel space: "
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case "$ibrs_enabled" in
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"") [ "$ibrs_supported" = 1 ] && pstatus yellow UNKNOWN || pstatus red NO;;
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0) pstatus red NO;;
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@ -72,7 +72,7 @@ case "$ibrs_enabled" in
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*) pstatus yellow UNKNOWN;;
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esac
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echo -n "* IBRS enabled for User space: "
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/bin/echo -n "* IBRS enabled for User space: "
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case "$ibrs_enabled" in
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"") [ "$ibrs_supported" = 1 ] && pstatus yellow UNKNOWN || pstatus red NO;;
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0 | 1) pstatus red NO;;
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@ -84,11 +84,11 @@ if [ "$mounted_debugfs" = 1 ]; then
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umount /sys/kernel/debug
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fi
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echo "* Mitigation 2"
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echo -n "* Kernel recompiled with retpoline: "
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/bin/echo "* Mitigation 2"
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/bin/echo -n "* Kernel recompiled with retpoline: "
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pstatus yellow UNKNOWN "check not yet implemented"
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echo -n "> \033[46m\033[30mSTATUS:\033[0m "
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/bin/echo -ne "> \033[46m\033[30mSTATUS:\033[0m "
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if grep -q AMD /proc/cpuinfo; then
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pstatus green "NOT VULNERABLE" "your CPU is not vulnerable as per the vendor"
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elif [ "$ibrs_enabled" = 1 -o "$ibrs_enabled" = 2 ]; then
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@ -98,9 +98,9 @@ else
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fi
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# MELTDOWN
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echo
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echo "\033[1;34mCVE-2017-5754 [rogue data cache load] aka 'Meltdown' aka 'Variant 3'\033[0m"
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echo -n "* Kernel supports Page Table Isolation (PTI): "
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/bin/echo
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/bin/echo -e "\033[1;34mCVE-2017-5754 [rogue data cache load] aka 'Meltdown' aka 'Variant 3'\033[0m"
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/bin/echo -n "* Kernel supports Page Table Isolation (PTI): "
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if [ -e /proc/config.gz ]; then
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if zgrep -q '^CONFIG_PAGE_TABLE_ISOLATION=y' /proc/config.gz; then
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pstatus green YES
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@ -126,7 +126,7 @@ else
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pstatus yellow UNKNOWN
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fi
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echo -n "* PTI enabled and active: "
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/bin/echo -n "* PTI enabled and active: "
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if grep ^flags /proc/cpuinfo | grep -qw pti; then
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pstatus green YES
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kpti_enabled=1
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@ -137,7 +137,7 @@ else
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pstatus red NO
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fi
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echo -n "> \033[46m\033[30mSTATUS:\033[0m "
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/bin/echo -ne "> \033[46m\033[30mSTATUS:\033[0m "
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if grep -q AMD /proc/cpuinfo; then
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pstatus green "NOT VULNERABLE" "your CPU is not vulnerable as per the vendor"
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elif [ "$kpti_enabled" = 1 ]; then
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@ -147,10 +147,10 @@ else
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fi
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echo
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/bin/echo
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if [ "$USER" != root ]; then
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echo "Note that you should launch this script with root privileges to get accurate information"
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echo "You can try the following command: sudo $0"
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/bin/echo "Note that you should launch this script with root privileges to get accurate information"
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/bin/echo "You can try the following command: sudo $0"
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fi
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