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Microsoft MSN Messenger 4.7 on Windows XP allows remote attackers to cause a denial of service (resource consumption) via a flood of SIP INVITE requests to the port specified for voice conversation.
Heap-based buffer overflow in Microsoft MSN Messenger 6.2, 7.0, and 7.5, and Live Messenger 8.0 allows user-assisted remote attackers to execute arbitrary code via unspecified vectors involving video conversation handling in Web Cam and video chat sessions.
The "Remember my Password" feature in MSN Messenger 7.5 stores passwords in an encrypted format under the HKEY_CURRENT_USER\Software\Microsoft\IdentityCRL\Creds registry key, which might allow local users to obtain the original passwords via a program that calls CryptUnprotectData, as demonstrated by the "MSN Password Recovery.exe" program. NOTE: it could be argued that local-only password recovery is inherently insecure because the decryption methods and keys must be stored somewhere on the local system, and are thus inherently accessible with varying degrees of effort. Perhaps this issue should not be included in CVE.
GIF file validation error in MSN Messenger 6.2 allows remote attackers in a user's contact list to execute arbitrary code via a GIF image with an improper height and width.
Multiple buffer overflows in libpng 1.2.5 and earlier, as used in multiple products, allow remote attackers to execute arbitrary code via malformed PNG images in which (1) the png_handle_tRNS function does not properly validate the length of transparency chunk (tRNS) data, or the (2) png_handle_sBIT or (3) png_handle_hIST functions do not perform sufficient bounds checking.
Microsoft MSN Messenger 6.0 and 6.1 does not properly handle certain requests, which allows remote attackers to read arbitrary files.
Microsoft MSN Messenger Service 1.0 through 4.6 allows remote attackers to cause a denial of service (crash) via an invite request that contains hex-encoded spaces (%20) in the Invitation-Cookie field.
Buffer overflow in Microsoft MSN Messenger Service 1.0 through 4.6 allows remote attackers to cause a denial of service (crash) via a long FN (font) argument in the message header.
MSN Messenger Service 3.6, and possibly other versions, uses weak authentication when exchanging messages between clients, which allows remote attackers to spoof messages from other users.
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