CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.7	$0-$5k	0.00

A vulnerability, which was classified as critical, was found in SourceFire Snort 2.9.4. This affects the function rule20275eval of the file netbios_kb961501-smb-printss-reponse.c. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was disclosed 01/17/2013 by Tavis Ormandy (@taviso) with Google Security Team as confirmed bulletin (Website). The advisory is shared at blog.snort.org. The public release has been coordinated in cooperation with SourceFire. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at X-Force (81408).

Productinfo

Vendor

• SourceFire

Name

• Snort

Version

• 2.9.4

License

• free

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 8.7

VulDB Base Score: 10.0
VulDB Temp Score: 8.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven
Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

01/17/2013 🔍
01/17/2013 +0 days 🔍
01/18/2013 +1 days 🔍
01/18/2013 +0 days 🔍
01/21/2013 +3 days 🔍
01/22/2013 +1 days 🔍
03/23/2019 +2251 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: blog.snort.org
Researcher: Tavis Ormandy (@taviso)
Organization: Google Security Team
Status: Confirmed
Coordinated: 🔍
X-Force: 81408 - Snort rule20275eval() buffer overflow, High Risk
SecurityTracker: 1028008
SecurityFocus: 57476 - Snort 'rule20275eval()' Function Stack Buffer Overflow Vulnerability
Secunia: 51901 - Snort "rule20275eval()" Buffer Overflow Vulnerability, Moderately Critical
OSVDB: 89348

Entryinfo

Created: 01/22/2013 14:10
Updated: 03/23/2019 15:07
Changes: 01/22/2013 14:10 (49), 03/23/2019 15:07 (14)
Complete: 🔍
Committer: olku

Discussion

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