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.
7.1	$0-$5k	0.00

A vulnerability was found in David King vino up to 2.31.91 and classified as critical. This issue affects the function vino_server_client_data_pending of the file vino-server.c. 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 vino_server_client_data_pending function in vino-server.c in GNOME Vino 2.26.1, 2.32.1, 3.7.3, and earlier, and 3.8 when encryption is disabled, does not properly clear client data when an error causes the connection to close during authentication, which allows remote attackers to cause a denial of service (infinite loop, CPU and disk consumption) via multiple crafted requests during authentication.

The weakness was disclosed 10/01/2013 (Website). It is possible to read the advisory at trustwave.com. The identification of this vulnerability is CVE-2013-5745 since 09/16/2013. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known.

A public exploit has been developed by Trustwave's SpiderLabs and been published before and not just after the advisory. The exploit is available at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 14 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 70593 (Fedora 19 : vino-3.8.1-3.fc19 (2013-17121)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 121836 (Solaris 11.1 Support Repository Update (SRU) 16.5.0 Missing).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 13405.

The vulnerability is also documented in the databases at Exploit-DB (28338), Tenable (70593), SecurityFocus (BID 58795†), Secunia (SA55090†) and Vulnerability Center (SBV-41783†).

Productinfo

Vendor

• David King

Name

• vino

Version

• 2.31.0
• 2.31.1
• 2.31.2
• 2.31.3
• 2.31.4
• 2.31.5
• 2.31.6
• 2.31.7
• 2.31.8
• 2.31.9
• 2.31.10
• 2.31.11
• 2.31.12
• 2.31.13
• 2.31.14
• 2.31.15
• 2.31.16
• 2.31.17
• 2.31.18
• 2.31.19
• 2.31.20
• 2.31.21
• 2.31.22
• 2.31.23
• 2.31.24
• 2.31.25
• 2.31.26
• 2.31.27
• 2.31.28
• 2.31.29
• 2.31.30
• 2.31.31
• 2.31.32
• 2.31.33
• 2.31.34
• 2.31.35
• 2.31.36
• 2.31.37
• 2.31.38
• 2.31.39
• 2.31.40
• 2.31.41
• 2.31.42
• 2.31.43
• 2.31.44
• 2.31.45
• 2.31.46
• 2.31.47
• 2.31.48
• 2.31.49
• 2.31.50
• 2.31.51
• 2.31.52
• 2.31.53
• 2.31.54
• 2.31.55
• 2.31.56
• 2.31.57
• 2.31.58
• 2.31.59
• 2.31.60
• 2.31.61
• 2.31.62
• 2.31.63
• 2.31.64
• 2.31.65
• 2.31.66
• 2.31.67
• 2.31.68
• 2.31.69
• 2.31.70
• 2.31.71
• 2.31.72
• 2.31.73
• 2.31.74
• 2.31.75
• 2.31.76
• 2.31.77
• 2.31.78
• 2.31.79
• 2.31.80
• 2.31.81
• 2.31.82
• 2.31.83
• 2.31.84
• 2.31.85
• 2.31.86
• 2.31.87
• 2.31.88
• 2.31.89
• 2.31.90
• 2.31.91

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: 7.1

VulDB Base Score: 7.5
VulDB Temp Score: 7.1
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
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Trustwave's SpiderLabs
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Nessus ID: 70593
Nessus Name: Fedora 19 : vino-3.8.1-3.fc19 (2013-17121)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 881807
OpenVAS Name: CentOS Update for vino CESA-2013:1452 centos5
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
TippingPoint: 🔍
Fortigate IPS: 🔍

Timelineinfo

09/16/2013 🔍
09/17/2013 +1 days 🔍
09/17/2013 +0 days 🔍
09/17/2013 +0 days 🔍
10/01/2013 +14 days 🔍
10/01/2013 +0 days 🔍
10/01/2013 +0 days 🔍
10/07/2013 +6 days 🔍
10/25/2013 +18 days 🔍
03/24/2015 +515 days 🔍
01/08/2022 +2482 days 🔍

Sourcesinfo

Advisory: USN-1980-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-5745 (🔍)
OVAL: 🔍

SecurityFocus: 58795
Secunia: 55090 - Ubuntu update for vino, Less Critical
Vulnerability Center: 41783 - Vino VNC Server Remote DOS Vulnerability Due to Improper Data Clearance While Closing A Connection, Medium

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

Entryinfo

Created: 03/24/2015 15:54
Updated: 01/08/2022 08:39
Changes: 03/24/2015 15:54 (71), 05/12/2017 20:55 (12), 01/08/2022 08:32 (3), 01/08/2022 08:36 (1), 01/08/2022 08:39 (1)
Complete: 🔍
Cache ID: 3:9A2:103

Discussion

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