15 lines
629 B
Text
15 lines
629 B
Text
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rule VUL_Exchange_CVE_2020_0688 {
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meta:
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description = "Detects static validation key used by Exchange server in web.config"
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author = "Florian Roth (Nextron Systems)"
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reference = "https://www.thezdi.com/blog/2020/2/24/cve-2020-0688-remote-code-execution-on-microsoft-exchange-server-through-fixed-cryptographic-keys"
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date = "2020-02-26"
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score = 60
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id = "1065f297-0dc4-5dcb-b0f3-c89d06ff5e69"
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strings:
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$h1 = "<?xml "
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$x1 = "<machineKey validationKey=\"CB2721ABDAF8E9DC516D621D8B8BF13A2C9E8689A25303BF\"" ascii wide
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condition:
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filesize <= 300KB and $h1 at 0 and $x1
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}
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