38 lines
1.3 KiB
Text
38 lines
1.3 KiB
Text
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rule VULN_LNX_OMI_RCE_CVE_2021_386471_Sep21 {
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meta:
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description = "Detects a Linux OMI version vulnerable to CVE-2021-38647 (OMIGOD) which enables an unauthenticated RCE"
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author = "Christian Burkard"
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date = "2021-09-16"
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reference = "https://www.wiz.io/blog/secret-agent-exposes-azure-customers-to-unauthorized-code-execution"
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score = 50
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id = "ca49f0cc-ea33-559c-bd4f-306a01315fce"
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strings:
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$a1 = "/opt/omi/bin/omiagent" ascii fullword
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$s1 = "OMI-1.6.8-0 - " ascii
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$s2 = "OMI-1.6.6-0 - " ascii
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$s3 = "OMI-1.6.4-1 - " ascii
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$s4 = "OMI-1.6.4-0 - " ascii
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$s5 = "OMI-1.6.2-0 - " ascii
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$s6 = "OMI-1.6.1-0 - " ascii
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$s7 = "OMI-1.5.0-0 - " ascii
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$s8 = "OMI-1.4.4-0 - " ascii
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$s9 = "OMI-1.4.3-2 - " ascii
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$s10 = "OMI-1.4.3-1 - " ascii
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$s11 = "OMI-1.4.3-0 - " ascii
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$s12 = "OMI-1.4.2-5 - " ascii
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$s13 = "OMI-1.4.2-4 - " ascii
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$s14 = "OMI-1.4.2-3 - " ascii
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$s15 = "OMI-1.4.2-2 - " ascii
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$s16 = "OMI-1.4.2-1 - " ascii
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$s17 = "OMI-1.4.1-1 - " ascii
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$s18 = "OMI-1.4.1-0 - " ascii
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$s19 = "OMI-1.4.0-6 - " ascii
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// older versions are no longer supported by current openssl
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// and are from before 2018
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condition:
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uint32be(0) == 0x7f454c46
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and $a1
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and 1 of ($s*)
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}
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