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SecurityAlert : 2509 CVE : CVE-2007-1785 SecurityRisk : High  (About) Remote Exploit : Yes Local Exploit : Yes Exploit Available : Yes Credit : Shirkdog Published : 02.04.2007
Advisory Content : [Shirkdog Security Advisory SHK-004] Title: ------ Computer Associates (CA) Brightstor Backup Mediasvr.exe Remote Code Vulnerability Description of Application: --------------------------- http://www3.ca.com/solutions/ProductFamily.aspx?ID=115 Brightstor ARCserv Backup provides a complete, flexible and integrated backup and recovery solution for Windows, NetWare, Linux and UNIX environments. Vulnerability(PoC): ------------------- There seems to be an design error in the handling of RPC data with xdr procedures across several .dll's imported by Mediasvr.exe. Four bytes from an RPC packet are processed as a particular address (xdr_handle_t data which is run through multiple bit shifts, and reversing of bytes), and eventually loaded into ECX. The 191 (0xbf) procedure, followed by nulls (at least 8 bytes of nulls, which may be Null Credentials and Auth?) leads to an exploitable condition. .text:0040AACD 008 mov ecx, [esp+8] .text:0040AAD1 008 mov dword_418820, esi .text:0040AAD7 008 push offset dword_418820 .text:0040AADC 00C mov eax, [ecx] .text:0040AADE 00C call dword ptr [eax+2Ch] At this point, you have control of ECX (esp+8 is your address data). The data from the packet is stored in memory and is relatively static (see NOTE). The address is then loaded into EAX, and then called as EAX+2Ch, which is controllable data from the packet. In this code, I just jump ahead to the portbinding shellcode. The following exploit opens up a shell on port 4444: http://www.shirkdog.us/camediasvrremote.py Impact: ---------- This vulnerability leads to remote code execution. Risk Level: -------------- Critical Solution: ------------ CA has been notified References: -------------- [Shirkdog Security] http://www.shirkdog.us/shk-004.html Shirkdog ' or 1=1-- http://www.shirkdog.us _________________________________________________________________ i'm making a difference. Make every IM count for the cause of your choice. Join Now. http://clk.atdmt.com/MSN/go/msnnkwme0080000001msn/direct/01/?href=http:/ /im.live.com/messenger/im/home/?source=hmtagline  Feedback : If you have additional information or notice any errors regarding this security advisory, please use contact form or email us at info()securityreason()com. |
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libc:fts_*() Multiple Denial of Service
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