- #Updat javascript flash player pdf#
- #Updat javascript flash player Patch#
- #Updat javascript flash player code#
There has been a lot of chatter about another alleged 0-day exploit for Adobe Reader, a file called hereEvil.pdf (MD5: 7cf5e503c2b92e1c154ec53808466d7c). The exploits seen in the wild use the /RichMedia annotation so this effectively stops them. There has been a lot of chatter about this vulnerability, and a lot of incorrect/incomplete information about various mitigation options so I wanted to clear some things.įirst of all, the only mitigation option is the one listed in Adobe's security advisory posted above – you can't mitigate this attack with any options in Adobe Reader (some blogs posted instructions for modifying Trust options under Multimedia Trust, but this related only to legacy players and will not stop this exploit from executing).īesides removing files, our PDF expert Didier Stevens found a quick and dirty hack by using a hex editor on AcroRd32.dll and replacing the RichMedia instance (into Richmedia, for example).
#Updat javascript flash player Patch#
They claim they'll have a patch ready around July 30-31.
It appears that the attackers created two different shellcodes as well, one for Firefox users (still have to confirm this) and the other for Internet Explorer users (this one is confirmed to work).Īdobe has released an advisory on the issue here. (FIXED: the VT link pointed to a wrong file)Īt the moment there is a low number of malicious sites serving the exploit, but we confirmed that the links have been injected in legitimate web sites to create a drive-by attack, as expected. Regarding Flash, NoScript is your best help here, of course. It appears that even when JavaScript support is disabled in Adobe Reader that the exploit still works, so at the moment there are no reliable protection mechanisms (except not using Adobe Reader?). At the moment, the detection for both the exploit and the Trojan is pretty bad (only 7/41 for the Trojan, according to VirusTotal). Another interesting thing I noticed is that the Trojan, which is downloaded in the second stage, is partially XOR-ed – the attackers probably did this to evade IDSes or AV programs scanning HTTP traffic.
#Updat javascript flash player pdf#
This increases the number of vectors for this attack: the malicious Flash file can be embedded in PDF documents which will cause Adobe Reader to execute it OR it can be used to exploit the Flash player directly, making it a drive-by attack as well.Īnd indeed, when tested with Internet Explorer and the latest Flash player (version 10), the exploit silently drops a Trojan and works "as advertised".
#Updat javascript flash player code#
However, the vulnerable component is actually the Flash player or, better said, the code used by the Flash player which is obviously shared with Adobe Reader/Acrobat. Besides being a 0-day there are some other interesting things about this exploit.įirst, several AV companies reported that they detected this 0-day exploit in PDF files, so at first it looked like an Adobe Reader vulnerability. The last one exploits a vulnerability in Adobe Flash player (versions 9 and 10) as well as Adobe Reader and Acrobat 9.1.2. Well, it looks like the last two weeks have definitely been marked by multiple 0-day exploits actively used in the wild.
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