cbcvebase.
CVE-2006-5143
published 2006-10-10

CVE-2006-5143: Multiple buffer overflows in CA BrightStor ARCserve Backup r11.5 SP1 and earlier, r11.1, and 9.01; BrightStor ARCserve Backup for Windows r11; BrightStor…

PriorityP269high7.5CVSS 2.0
AVNACLAuNCPIPAP
EXPLOIT
EPSS
78.38%
99.5th percentile
Multiple buffer overflows in CA BrightStor ARCserve Backup r11.5 SP1 and earlier, r11.1, and 9.01; BrightStor ARCserve Backup for Windows r11; BrightStor Enterprise Backup 10.5; Server Protection Suite r2; and Business Protection Suite r2 allow remote attackers to execute arbitrary code via crafted data on TCP port 6071 to the Backup Agent RPC Server (DBASVR.exe) using the RPC routines with opcode (1) 0x01, (2) 0x02, or (3) 0x18; invalid stub data on TCP port 6503 to the RPC routines with opcode (4) 0x2b or (5) 0x2d in ASCORE.dll in the Message Engine RPC Server (msgeng.exe); (6) a long hostname on TCP port 41523 to ASBRDCST.DLL in the Discovery Service (casdscsvc.exe); or unspecified vectors related to the (7) Job Engine Service.

Affected

7 ranges
VendorProductVersion rangeFixed in
broadcombrightstor_arcserve_backup<= 11.5
broadcombrightstor_arcserve_backup
broadcombrightstor_arcserve_backup
broadcombrightstor_enterprise_backup
broadcombusiness_protection_suite
broadcomserver_protection_suite
cabrightstor_arcserve_backup

Detection & IOCsextracted from sources · hover to see the quote

port6503/tcp
port6071/tcp
port41523/tcp
port4444/tcp
otherRPC UUID: dc246bf0-7a7a-11ce-9f88-00805fe43838 v1.0
otherRPC opcode 0x2b (43) on TCP/6503 targeting ASCORE.dll in msgeng.exe
processDBASVR.exe
processcasdscsvc.exe
filenameASCORE.dll
filenameASBRDCST.DLL
  • Detect DCE/RPC bind requests to UUID dc246bf0-7a7a-11ce-9f88-00805fe43838 v1.0 on TCP/6503 targeting the CA BrightStor Message Engine (msgeng.exe)
  • Alert on DCE/RPC calls to opcode 0x2b (43) or 0x2d (45) on TCP/6503 with oversized stub data (>=680 bytes of NOP-like padding) targeting msgeng.exe / ASCORE.dll
  • Alert on DCE/RPC calls to opcode 0x01, 0x02, or 0x18 on TCP/6071 to the Backup Agent RPC Server (DBASVR.exe) with crafted/oversized data
  • Alert on excessively long hostname strings sent to TCP/41523 targeting the CA BrightStor Discovery Service (casdscsvc.exe / ASBRDCST.DLL)
  • Monitor for outbound connections or listening services on TCP/4444 following exploitation of msgeng.exe or Mediasvr.exe, indicating successful bind-shell payload execution
  • Detect portmap (TCP/111) queries for the CA Mediasvr.exe RPC service (program 0x00060097e / 0x6097e) as a precursor to exploitation
  • ·The Metasploit module targets Windows 2000 SP4 English only, using hardcoded RET (0x7c2f6cc8) and UEF (0x7c54144c) addresses; detection/blocking based on these addresses is OS-version specific
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