cbcvebase.
CVE-2010-0071
published 2010-01-13

CVE-2010-0071: Unspecified vulnerability in the Listener component in Oracle Database 9.2.0.8, 9.2.0.8DV, 10.1.0.5, 10.2.0.4, and 11.1.0.7 allows remote attackers to affect…

PriorityP260critical10CVSS 2.0
AVNACLAuNCCICAC
EXPLOIT
EPSS
9.83%
95.0th percentile
Unspecified vulnerability in the Listener component in Oracle Database 9.2.0.8, 9.2.0.8DV, 10.1.0.5, 10.2.0.4, and 11.1.0.7 allows remote attackers to affect confidentiality, integrity, and availability via unknown vectors.

Affected

5 ranges
VendorProductVersion rangeFixed in
oracledatabase_server
oracledatabase_server
oracledatabase_server
oracledatabase_server
oracledatabase_server

Detection & IOCsextracted from sources · hover to see the quote

port1521
commandCONNECT_DATA=(COMMAND=service_register_NSGR))
processTNSLSNR.EXE
bytes
\x00\x68\x00\x00\x01\x00\x00\x00\x01\x3A\x01\x2C\x00\x00\x20\x00\x7F\xFF\xC6\x0E\x00\x00\x01\x00\x00\x2E\x00\x3A\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x28\x43\x4F\x4E\x4E\x45\x43\x54\x5F\x44\x41\x54\x41\x3D\x28\x43\x4F\x4D\x4D\x41\x4E\x44\x3D\x73\x65\x72\x76\x69\x63\x65\x5F\x72\x65\x67\x69\x73\x74\x65\x72\x5F\x4E\x53\x47\x52\x29\x29
  • Detect exploit by monitoring for TNS CONNECT packets on port 1521 containing the ASCII string 'service_register_NSGR' in the CONNECT_DATA field, which is the malicious TNS command used to trigger the nsglvcrt() memory corruption.
  • Monitor TNSLSNR.EXE for abnormally large memory allocation attempts via malloc (e.g., 0x4222fc4 bytes) followed by a memcpy from a null/zero source, which indicates the nsglvcrt() heap corruption trigger.
  • The exploit is sent over the Oracle Net (TNS) protocol without requiring authentication; alert on unauthenticated TNS connections to port 1521 that send a second large data packet (>700 bytes) immediately after the initial CONNECT handshake response.
  • The first exploit packet begins with the byte sequence 00 68 00 00 01 00 00 00 01 3A 01 2C — monitor for this TNS packet header on port 1521 as a signature of the CVE-2010-0071 exploit attempt.
  • ·The exploit successfully crashes Oracle RDBMS versions 11.1.0.6.0, 11.1.0.7.0, 10.2.0.4 (win32) and 10.2.0.2 (Linux x86) but does NOT crash Oracle RDBMS 11.2 Linux x86, so detection rules should be scoped to affected versions only.
  • ·The vulnerability is fixed in CPUjan2010; systems with the January 2010 Critical Patch Update applied are not vulnerable and detections may generate false positives if patch status is not verified.
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