cbcvebase.
CVE-2002-0649
published 2002-08-12

CVE-2002-0649: Multiple buffer overflows in the Resolution Service for Microsoft SQL Server 2000 and Microsoft Desktop Engine 2000 (MSDE) allow remote attackers to cause a…

PriorityP269high7.5CVSS 2.0
AVNACLAuNCPIPAP
ITWEXPLOITVulnCheck KEV
Exploited in the wild
EPSS
84.75%
99.7th percentile
Multiple buffer overflows in the Resolution Service for Microsoft SQL Server 2000 and Microsoft Desktop Engine 2000 (MSDE) allow remote attackers to cause a denial of service or execute arbitrary code via UDP packets to port 1434 in which (1) a 0x04 byte that causes the SQL Monitor thread to generate a long registry key name, or (2) a 0x08 byte with a long string causes heap corruption, as exploited by the Slammer/Sapphire worm.

Affected

2 ranges
VendorProductVersion rangeFixed in
microsoftdata_engine
microsoftsql_server

Detection & IOCsextracted from sources · hover to see the quote

portUDP/1434
registryReturn address 0x42b48774 (in sqlsort.dll, MSSQL 2000/MSDE SP0/SP1/SP2)
otherReturn address 0x42B0C9DC (jmp esp in sqlsort.dll)
bytes
0x04 (UDP packet first byte, triggers SQL Monitor thread overflow)
bytes
0x08 (UDP packet first byte, triggers heap corruption)
bytes
|04| ... |81 F1 03 01 04 9B 81 F1 01| ... sock ... send
bytes
|04| ... |81 F1 03 01 04 9B 81 F1| ... sock ... send
  • Detect exploit trigger: UDP packets to port 1434 where the first byte is 0x04 (stack overflow vector) or 0x08 (heap overflow vector).
  • Slammer worm payload contains the byte sequence |81 F1 03 01 04 9B 81 F1 01| as well as the strings 'sock' and 'send' within the UDP payload to port 1434; match all four content patterns for high-confidence detection.
  • Monitor for outbound UDP traffic from internal hosts to external port 1434 — this indicates a Slammer-infected host attempting to propagate.
  • The exploit payload bad characters are \x00\x3a\x0a\x0d\x2f\x5c; the trigger packet starts with \x04 followed by up to ~800 bytes of text, ending with \x68:888 (push dword 0x3838383a).
  • Block or alert on all UDP and TCP traffic to/from port 1434 at the network perimeter to mitigate both exploitation and worm propagation.
  • ·The Metasploit module targets MSSQL 2000 / MSDE pre-SP3 only; the return address 0x42b48774 is specific to that version range and will differ across service pack levels.
  • ·The Snort rules carry metadata confidence 'Medium' and signature_severity 'Informational', meaning they may generate noise and should be tuned before use in blocking mode.

CVSS provenance

nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
vulncheck7.5HIGH
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