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Credit:
The information has been provided by iDefense Labs Security Advisories.
The original article can be found at: http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=675
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Vulnerable Systems:
* Borland CaliberRM 2006 (file version 9.0.809.000) - StarTeam Multicast Service version 6.4
This vulnerability exists in the StarTeam Multicast Service component (STMulticastService). This service is implemented using the HTTP protocol. The vulnerable function, PGMWebHandler::parse_request, is shown below.
.text:003AA15D call PGMWebHandler::parse_request(char const *,uint,char *,uint,http_request_info_t &)
...
.text:003AA35E loc_3AA35E:
.text:003AA35E mov al, [ebx]
.text:003AA360 cmp al, 0Ah
.text:003AA362 mov [edx], al ; edx points to the stack, overflowable because of the loop
.text:003AA364 jnz loc_3AA4EF
...
.text:003AA36A mov byte ptr [edx+1], 0
.text:003AA36E mov al, byte ptr [esp+618h+lbuff]
.text:003AA372 cmp al, 0Dh
.text:003AA374 jz loc_3AA509
...
.text:003AA4F0 loc_3AA4F0:
.text:003AA4F0 mov eax, [esp+618h+count]
.text:003AA4F4 mov ecx, [esp+618h+req_len]
.text:003AA4FB inc ebx
.text:003AA4FC inc eax
.text:003AA4FD cmp eax, ecx
.text:003AA4FF mov [esp+618h+count], eax
.text:003AA503 jl loc_3AA35E ; loop back up
While searching for the standard 0x0a0d that ends HTTP requests, a loop copies attacker supplied data byte by byte into a fixed-size stack buffer. If a large enough request is sent, the return address, SEH pointers, and other stack data is overwritten.
Analysis:
Exploitation allows attackers to execute arbitrary code with SYSTEM level privileges. In order to exploit this vulnerability an attacker would have to send malicious data to the STMulticastService service listening on TCP port 3057.
The StarTeam Multicast service is not installed by default with CaliberRM 2006. The user must enable MPX Events and the StarTeam Message Broker option during the installation process.
Workaround:
In order to prevent exploitation of this vulnerability, administrators can disable the Multicast Service monitoring port. For more information consult Borland's Knowledge Base at the following URL: http://support.borland.com/kbshow.php?q=29083
Vendor response:
Borland Software Corp. has not responded to repeated inquiries regarding this vulnerability. iDefense Labs confirmed that the current version (Borland CaliberRM 2008) still contains the vulnerable code. However, the monitoring port appears to be disabled in a default installation.
CVE Information:
CVE-2008-0311
Disclosure timeline:
03/20/2007 - Initial vendor notification
03/20/2007 - Initial vendor response
08/06/2007 - Second vendor notification
11/02/2007 - Third vendor notification
04/02/2008 - Public disclosure
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