ET DELETED PDF Name Representation Obfuscation of JBIG2Decode, Very Likely Memory Corruption Attempt

7.0.35.0SID: 2011534Rev: 7Disabled2 views
Sourceet/open
Fileemerging-deleted.rules
CreatedSeptember 27, 2010
UpdatedJuly 26, 2019
Classificationattempted-user
alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET DELETED PDF Name Representation Obfuscation of JBIG2Decode, Very Likely Memory Corruption Attempt"; flow:established,to_client; content:"obj"; content:"<<"; within:4; content:"/"; within:50; content:!"JBIG2Decode"; within:11; content:"#"; within:31; pcre:"/\x3C\x3C(\x0D\x0A|\x0A)[^>]*\x2F[^JBIG2Decode](J|#4A)(B|#42)(I|#49)(G|#47)(2|#32)(D|#44)(e|#65)(c|#63)(o|#6F)(d|#64)(e|#65)/smi"; reference:url,blog.didierstevens.com/2008/04/29/pdf-let-me-count-the-ways/; reference:url,blog.didierstevens.com/2009/03/01/quickpost-jbig2decode-signatures/; reference:bugtraq,33751; reference:cve,2009-0658; classtype:attempted-user; sid:2011534; rev:7; metadata:created_at 2010_09_27, confidence Medium, signature_severity Unknown, updated_at 2019_07_26;)

References

urlblog.didierstevens.com/2008/04/29/pdf-let-me-count-the-ways/
urlblog.didierstevens.com/2009/03/01/quickpost-jbig2decode-signatures/
bugtraq33751
cve2009-0658

Metadata

created at2010_09_27
confidenceMedium
signature severityUnknown
updated at2019_07_26

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