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.
7.5	$0-$5k	0.00

A vulnerability was found in Linux Kernel up to 2.6.38.8 (Operating System). It has been rated as critical. This issue affects the function rose_parse_ccitt. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. The summary by CVE is:

The rose_parse_ccitt function in net/rose/rose_subr.c in the Linux kernel before 2.6.39 does not validate the FAC_CCITT_DEST_NSAP and FAC_CCITT_SRC_NSAP fields, which allows remote attackers to (1) cause a denial of service (integer underflow, heap memory corruption, and panic) via a small length value in data sent to a ROSE socket, or (2) conduct stack-based buffer overflow attacks via a large length value in data sent to a ROSE socket.

The issue has been introduced in 03/14/2011. The weakness was presented 06/21/2012 (Website). The advisory is shared at github.com. The identification of this vulnerability is CVE-2011-4913 since 12/23/2011. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/05/2021).

The vulnerability was handled as a non-public zero-day exploit for at least 465 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 55104 (Ubuntu 10.04 LTS : linux, linux-ec2 vulnerabilities (USN-1141-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (55104). See 4416, 4544, 61074 and 61071 for similar entries.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 2.6.38
• 2.6.38.1
• 2.6.38.2
• 2.6.38.3
• 2.6.38.4
• 2.6.38.5
• 2.6.38.6
• 2.6.38.7
• 2.6.38.8

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: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.5
VulDB Temp Score: 7.5
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: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Nessus ID: 55104
Nessus Name: Ubuntu 10.04 LTS : linux, linux-ec2 vulnerabilities (USN-1141-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: be20250c13f88375345ad99950190685eda51eb8

Timelineinfo

03/14/2011 🔍
06/13/2011 +91 days 🔍
12/23/2011 +193 days 🔍
06/21/2012 +181 days 🔍
06/21/2012 +0 days 🔍
04/30/2014 +678 days 🔍
03/23/2015 +327 days 🔍
12/05/2021 +2449 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-1141-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-4913 (🔍)
OVAL: 🔍

Vulnerability Center: 44337 - Linux Kernel <2.6.39 ROSE Implementation Remote DoS due to Buffer Overflow in rose_subr.c, High
SecurityFocus: 45986

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 12/05/2021 09:47
Changes: 03/23/2015 16:50 (57), 05/27/2017 10:24 (5), 12/05/2021 09:43 (5), 12/05/2021 09:47 (3)
Complete: 🔍

Discussion

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