Snort, Sourcefire, and Nortel Threat Protection IDS/IPS DCE/RPC buffer overflow
| smb-bo (31275) |  High Risk |
Description:
Snort IDS (Intrusion Detection System), Sourcefire Intrusion Sensor software, and Nortel Threat Protection are vulnerable to a stack-based buffer overflow in the DCE/RPC reassembly process. By sending specially-crafted SMB traffic to a vulnerable system, a remote attacker could overflow a buffer and execute arbitrary code on the system with root or SYSTEM privileges.
Consequences:
Gain Access
Remedy:
For Snort IDS/IPS:
Upgrade to the latest version of Snort (2.6.1.3 or later), available from the Snort Web site. See References.
For Gentoo Linux:
Refer to GLSA 200703-01 for patch, upgrade, or suggested workaround information. See References.
For Nortel Threat Protection:
Refer to Nortel Networks Security Advisory DOCUMENT ID 2007007755 for patch, upgrade, or suggested workaround information. See References.
As a workaround, disable the DCE/RPC preprocessor by removing the DCE/RPC preprocessor directives from snort.conf and restarting Snort. However, be advised that disabling the DCE/RPC preprocessor reduces detection capabilities for attacks in DCE/RPC traffic. After upgrading, customers should re-enable the DCE/RPC preprocessor.
References:
- 2007-02-19 Sourcefire Advisory: Vulnerability in Snort DCE/RPC Preprocessor.
- IBM Internet Security Systems Protection Advisory - Feb 19, 2007: Sourcefire Snort Remote Buffer Overflow.
- Nortel Networks Security Advisory DOCUMENT ID 2007007755: Security vulnerability in TPS DCE/RPC preprocessor (CVE-2006-5276).
- Offensive Security Exploit Database [04-09-2012]: Snort 2 DCE/RPC preprocessor Buffer Overflow.
- Snort Web site: Snort - the de facto standard for intrusion detection/prevention.
- Sourcefire Web site: Sourcefire Network Security.
- US-CERT Technical Cyber Security Alert TA07-050A: Sourcefire Snort DCE/RPC Preprocessor Buffer Overflow.
- BID-22616: Snort/Sourcefire DCE/RPC Packet Reassembly Stack Buffer Overflow Vulnerability
- CVE-2006-5276: Stack-based buffer overflow in the DCE/RPC preprocessor in Snort before 2.6.1.3, and 2.7 before beta 2; and Sourcefire Intrusion Sensor; allows remote attackers to execute arbitrary code via crafted SMB traffic.
- GLSA-200703-01: Snort: Remote execution of arbitrary code
- OSVDB ID: 32094: Snort DCE/RPC Pre-Processor Packet Reassembly Remote Overflow
- SA24190: Snort DCE/RPC Preprocessor Buffer Overflow
- SA24235: Sourcefire Intrusion Sensor DCE/RPC Preprocessor Buffer Overflow
- SA24239: Nortel Threat Protection System DCE/RPC Preprocessor Buffer Overflow
- SA24240: Nortel Threat Protection System DCE/RPC Preprocessor Buffer Overflow
- SECTRACK ID: 1017669: Snort Buffer Overflow in DCE/RPC Preprocessor Lets Remote Users Execute Arbitrary Code
- SECTRACK ID: 1017670: Sourcefire Intrusion Sensor Buffer Overflow in DCE/RPC Preprocessor Lets Remote Users Execute Arbitrary Code
- US-CERT VU#196240: Sourcefire Snort DCE/RPC preprocessor does not properly reassemble fragmented packets
- VUPEN/ADV-2007-0656: Sourcefire Intrusion Sensor and Snort DCE/RPC Preprocessor Overflow Vulnerability
- VUPEN/ADV-2007-0668: Nortel Threat Protection System DCE/RPC Preprocessor Buffer Overflow Vulnerability
Platforms Affected:
- Gentoo Linux
- Nortel Threat Protection System 2050
- Nortel Threat Protection System 2070
- Nortel Threat Protection System 2150
- Nortel Threat Protection System 2170
- Nortel Threat Protection System SEU
- Snort Snort 2.6.1
- Snort Snort 2.6.1.1
- Snort Snort 2.6.1.2
- Snort Snort 2.7 Beta1
- Sourcefire Sourcefire Intrusion Sensors 4.1.x before SEU 64
- Sourcefire Sourcefire Intrusion Sensors 4.5.x before SEU 64
- Sourcefire Sourcefire Intrusion Sensors 4.6.x before SEU 64
- Sourcefire Sourcefire Intrusion Sensors (Crossbeam) 4.1.x before SEU 64
- Sourcefire Sourcefire Intrusion Sensors (Crossbeam) 4.5.x before SEU 64
- Sourcefire Sourcefire Intrusion Sensors (Crossbeam) 4.6.x before SEU 64
Reported:
Feb 19, 2007
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