Zapping Zapping VBI Library up to 0.2.19 contrib/ntsc-cc.c ccdecode memory corruption

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.
6.6	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Zapping Zapping VBI Library up to 0.2.19. Impacted is the function ccdecode of the file contrib/ntsc-cc.c. Performing a manipulation results in memory corruption. This vulnerability is known as CVE-2007-3121. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Zapping Zapping VBI Library up to 0.2.19 (Software Library). It has been classified as critical. This affects the function ccdecode of the file contrib/ntsc-cc.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 summary by CVE is:

Buffer overflow in the CCdecode function in contrib/ntsc-cc.c in the zvbi-ntsc-cc tool in Zapping VBI Library (ZVBI) before 0.2.25 allows attackers to cause a denial of service (application crash) and possibly execute arbitrary code via long data during a reception error. NOTE: some of these details are obtained from third party information.

The bug was discovered 02/14/2007. The weakness was published 03/09/2007 (Website). The advisory is shared at sourceforge.net. This vulnerability is uniquely identified as CVE-2007-3121 since 06/07/2007. 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 are known, but no exploit is available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 23 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 0.2.20 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at OSVDB (43454†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Software Library

Vendor

• Zapping

Name

• Zapping VBI Library

Version

• 0.2.0
• 0.2.1
• 0.2.2
• 0.2.3
• 0.2.4
• 0.2.5
• 0.2.6
• 0.2.7
• 0.2.8
• 0.2.9
• 0.2.10
• 0.2.11
• 0.2.12
• 0.2.13
• 0.2.14
• 0.2.15
• 0.2.16
• 0.2.17
• 0.2.18
• 0.2.19

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
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: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

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: Upgrade
Status: 🔍

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

Upgrade: Zapping VBI Library 0.2.20

Timelineinfo

02/14/2007 🔍
03/09/2007 +23 days 🔍
03/09/2007 +0 days 🔍
06/07/2007 +90 days 🔍
06/07/2007 +0 days 🔍
03/22/2008 +289 days 🔍
03/15/2015 +2548 days 🔍
08/19/2017 +888 days 🔍

Sourcesinfo

Advisory: sourceforge.net
Status: Not defined
Confirmation: 🔍

CVE: CVE-2007-3121 (🔍)
GCVE (CVE): GCVE-0-2007-3121
GCVE (VulDB): GCVE-100-37185
OSVDB: 43454 - Zapping VBI Library zvbi-ntsc-cc Tool contrib/ntsc-cc.c CCDecode Function Reception Error Overflow
Vupen: ADV-2007-2088

Entryinfo

Created: 03/15/2015 15:58
Updated: 08/19/2017 09:50
Changes: 03/15/2015 15:58 (49), 08/19/2017 09:50 (9)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

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