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.
4.8	$0-$5k	0.00

A vulnerability, which was classified as problematic, was found in Samba up to 3.2.12 (File Transfer Software). This affects the function chain_reply of the file process.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. The summary by CVE is:

The chain_reply function in process.c in smbd in Samba before 3.4.8 and 3.5.x before 3.5.2 allows remote attackers to cause a denial of service (NULL pointer dereference and process crash) via a Negotiate Protocol request with a certain 0x0003 field value followed by a Session Setup AndX request with a certain 0x8003 field value.

The weakness was disclosed 06/17/2010 by Laurent Gaffie as confirmed git commit (GIT Repository). The advisory is shared at git.samba.org. This vulnerability is uniquely identified as CVE-2010-1635. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

A public exploit has been developed in Python. The exploit is shared for download at securityfocus.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 48199 (Mandriva Linux Security Advisory : samba (MDVSA-2010:141)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 70057 (Samba Multiple Remote Denial of Service Vulnerabilities).

Upgrading to version 3.2.13 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.samba.org. The best possible mitigation is suggested to be patching the affected component. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 9979.

The vulnerability is also documented in the vulnerability database at Tenable (48199). The entry 53698 is pretty similar.

Productinfo

Type

• File Transfer Software

Name

• Samba

Version

• 3.2.0
• 3.2.1
• 3.2.2
• 3.2.3
• 3.2.4
• 3.2.5
• 3.2.6
• 3.2.7
• 3.2.8
• 3.2.9
• 3.2.10
• 3.2.11
• 3.2.12

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
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: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Nessus ID: 48199
Nessus Name: Mandriva Linux Security Advisory : samba (MDVSA-2010:141)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 831116
OpenVAS Name: Mandriva Update for samba MDVSA-2010:141 (samba)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Upgrade: Samba 3.2.13
Patch: git.samba.org
TippingPoint: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

04/29/2010 🔍
05/11/2010 +12 days 🔍
05/11/2010 +0 days 🔍
06/17/2010 +37 days 🔍
06/17/2010 +0 days 🔍
07/30/2010 +43 days 🔍
08/03/2010 +4 days 🔍
03/19/2015 +1689 days 🔍
09/18/2021 +2375 days 🔍

Sourcesinfo

Product: samba.org

Advisory: git.samba.org
Researcher: Laurent Gaffie
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2010-1635 (🔍)
Vulnerability Center: 26665 - Samba Remote DoS Vulnerability via a Crafted Negotiate Protocol Request, Medium
SecurityFocus: 40097 - Samba Multiple Remote Denial of Service Vulnerabilities

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/19/2015 12:22
Updated: 09/18/2021 08:58
Changes: 03/19/2015 12:22 (69), 03/02/2017 10:55 (12), 09/18/2021 08:54 (4), 09/18/2021 08:58 (1)
Complete: 🔍

Discussion

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