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[SHLL-6290] Removed ShellShock test as it is no longer needed - CVE-2017-8108

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Michael Boelen 2017-05-03 09:33:40 +02:00
parent 9e10fdfbc8
commit 67333bb09a
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GPG Key ID: 26141F77A09D7F04
1 changed files with 0 additions and 127 deletions
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include/tests_shells
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@ -263,133 +263,6 @@
fi fi
# #
################################################################################# #################################################################################
#
# Test : SHLL-6290
# Description : Check for Shellshock vulnerability
# TODO remove this test?
Register --test-no SHLL-6290 --weight H --network NO --category security --description "Perform Shellshock vulnerability tests"
if [ ${SKIPTEST} -eq 0 ]; then
FOUND=0
x=""
#Display --indent 2 --text "- Testing for Shellshock vulnerability"
LogText "Test: Check if bash is in the list of shells."
if [ -f /etc/shells ]; then
LogText "Test: checking for bash shell in /etc/shells"
FIND=$(${EGREPBINARY} '(/usr)?(/local)?/bin/bash' /etc/shells | ${GREPBINARY} -v "^#" | head -1)
else
LogText "Test: checking if bash is available via which command"
FIND=$(which bash 2> /dev/null | grep -v "no [^ ]* in " | head -1)
fi
LogText "Result: command revealed ${FIND} as output"
if [ ! -z "${FIND}" ]; then
if [ -x "${FIND}" -a ! -L "${FIND}" ]; then
LogText "Result: found ${FIND} as a valid shell"
CreateTempFile || ExitFatal
SHELLSHOCK_TMP="${TEMP_FILE}"
# CVE-2014-6271
LogText "Test: Check for first exploit (CVE-2014-6271)"
echo "env 'x=() { :;}; echo vulnerable' 'BASH_FUNC_x()=() { :;}; echo vulnerable' bash -c \"echo test\" 2>&1 | ${GREPBINARY} 'vulnerable'" > ${SHELLSHOCK_TMP}
VULNERABLE=$(${FIND} ${SHELLSHOCK_TMP} 2> /dev/null)
rm -f ${SHELLSHOCK_TMP}
if [ ! -z "${VULNERABLE}" ]; then
LogText "Output: ${VULNERABLE}"
LogText "Result: Vulnerable to original shellshock (CVE-2014-6271)"
Display --indent 2 --text "- Shellshock: CVE-2014-6271 (original shellshocker)" --result "${STATUS_WARNING}" --color RED
FOUND=1
else
LogText "Result: Not vulnerable to original shellshock (CVE-2014-6271)"
fi
# CVE-2014-6277 (disabled, as this test was giving too much false positives)
# CVE-2014-6278
LogText "Test: Check for CVE-2014-6278"
echo "shellshocker='() { echo vulnerable; }' bash -c shellshocker 2>/dev/null | ${GREPBINARY} 'vulnerable'" > ${SHELLSHOCK_TMP}
VULNERABLE=$(${FIND} ${SHELLSHOCK_TMP} 2> /dev/null)
rm -f ${SHELLSHOCK_TMP}
if [ ! -z "${VULNERABLE}" ]; then
LogText "Output: ${VULNERABLE}"
LogText "Result: Vulnerable to CVE-2014-6278"
Display --indent 2 --text "- Shellshock: CVE-2014-6278 (Florian's patch, lcamtuf bug #2)" --result "${STATUS_WARNING}" --color RED
FOUND=1
else
LogText "Result: Not vulnerable to CVE-2014-6278"
fi
# CVE-2014-7169
LogText "Test: Check for taviso bug CVE-2014-7169"
echo "(cd /tmp; rm -f /tmp/echo; env X='() { (a)=>\' bash -c "echo echo nonvuln" 2>/dev/null; [[ \"\$(cat echo 2> /dev/null)\" == \"nonvuln\" ]] && echo \"vulnerable\" 2> /dev/null) | ${GREPBINARY} ' vulnerable'" > ${SHELLSHOCK_TMP}
VULNERABLE=$(${FIND} ${SHELLSHOCK_TMP} 2> /dev/null)
rm -f ${SHELLSHOCK_TMP}
if [ ! "${VULNERABLE}" = "" ]; then
LogText "Output: ${VULNERABLE}"
LogText "Result: Vulnerable to taviso bug (CVE-2014-7169)"
Display --indent 2 --text "- Shellshock: CVE-2014-7169 (taviso bug)" --result "${STATUS_WARNING}" --color RED
FOUND=1
else
LogText "Result: Not vulnerable to taviso bug (CVE-2014-7169)"
fi
# CVE-2014-7186
LogText "Test: Check for CVE-2014-7186"
echo "(bash -c 'true <<EOF <<EOF <<EOF <<EOF <<EOF <<EOF <<EOF <<EOF <<EOF <<EOF <<EOF <<EOF <<EOF <<EOF' 2>/dev/null || echo \"vulnerable\") | ${GREPBINARY} 'vulnerable'" > ${SHELLSHOCK_TMP}
VULNERABLE=$(${FIND} ${SHELLSHOCK_TMP} 2> /dev/null)
rm -f ${SHELLSHOCK_TMP}
if [ ! "${VULNERABLE}" = "" ]; then
LogText "Output: ${VULNERABLE}"
LogText "Result: Vulnerable to CVE-2014-7186"
Display --indent 2 --text "- Shellshock: CVE-2014-7186 redir_stack bug" --result "${STATUS_WARNING}" --color RED
FOUND=1
else
LogText "Result: Not vulnerable to CVE-2014-7186"
fi
# CVE-2014-7187
LogText "Test: Check for CVE-2014-7187"
echo "((for x in {1..200}; do echo \"for x$x in ; do :\"; done; for x in {1..200}; do echo done; done) | bash || echo \"vulnerable\") | ${GREPBINARY} 'vulnerable'" > ${SHELLSHOCK_TMP}
VULNERABLE=$(${FIND} ${SHELLSHOCK_TMP} 2> /dev/null)
rm -f ${SHELLSHOCK_TMP}
if [ ! "${VULNERABLE}" = "" ]; then
LogText "Output: ${VULNERABLE}"
LogText "Result: Vulnerable to CVE-2014-7187"
Display --indent 2 --text "- Shellshock: CVE-2014-7187 nested loops off by one bug" --result "${STATUS_WARNING}" --color RED
FOUND=1
else
LogText "Result: Not vulnerable to CVE-2014-7187"
fi
# CVE-2014-////
LogText "Test: Check for bug Exploit #3 - shellshocker.net (no CVE)"
echo "env X=' () { }; echo hello' bash -c 'date'| ${GREPBINARY} 'hello'" > ${SHELLSHOCK_TMP}
VULNERABLE=$(${FIND} ${SHELLSHOCK_TMP} 2> /dev/null)
rm -f ${SHELLSHOCK_TMP}
if [ ! -z "${VULNERABLE}" ]; then
LogText "Output: ${VULNERABLE}"
LogText "Result: Vulnerable to CVE-2014-//// (exploit #3 on shellshocker.net)"
Display --indent 2 --text "- Shellshock: Exploit #3 on shellshocker.net (no CVE)" --result "${STATUS_WARNING}" --color RED
FOUND=1
else
LogText "Result: Not vulnerable to exploit #3 on shellshocker.net (no CVE)"
fi
else
LogText "Result: bash binary found, but not executable, or it is symlinked"
fi
else
LogText "Result: could not find bash to be a valid shell"
fi
if [ ${FOUND} -eq 1 ]; then
ReportWarning ${TEST_NO} "System vulnerable to Shellshock (bash)"
AddHP 0 25
else
AddHP 5 5
fi
unset x
fi
#
#################################################################################
# #
Report "session_timeout_enabled=${IDLE_TIMEOUT}" Report "session_timeout_enabled=${IDLE_TIMEOUT}"