pngcrush up to 1.7.86 sPLT Chunk Structure png.c double free

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.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in pngcrush up to 1.7.86. It has been declared as problematic. This affects an unknown part of the file png.c of the component sPLT Chunk Structure Handler. Executing a manipulation can lead to double free. This vulnerability is tracked as CVE-2015-7700. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in pngcrush up to 1.7.86 and classified as problematic. This vulnerability affects some unknown processing of the file png.c of the component sPLT Chunk Structure Handler. The manipulation with an unknown input leads to a double free vulnerability. The CWE definition for the vulnerability is CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. As an impact it is known to affect availability. CVE summarizes:

Double-free vulnerability in the sPLT chunk structure and png.c in pngcrush before 1.7.87 allows attackers to have unspecified impact via unknown vectors.

The bug was discovered 10/10/2015. The weakness was disclosed 08/31/2017 (Website). The advisory is available at pmt.sourceforge.net. This vulnerability was named CVE-2015-7700 since 10/04/2015. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 122 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 88658 (Amazon Linux AMI : pngcrush (ALAS-2016-646)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170796 (OpenSUSE Security Update for pngcrush (openSUSE-SU-2018:0098-1)).

Upgrading to version 1.7.87 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (88658). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• pngcrush

Version

• 1.7.0
• 1.7.1
• 1.7.2
• 1.7.3
• 1.7.4
• 1.7.5
• 1.7.6
• 1.7.7
• 1.7.8
• 1.7.9
• 1.7.10
• 1.7.11
• 1.7.12
• 1.7.13
• 1.7.14
• 1.7.15
• 1.7.16
• 1.7.17
• 1.7.18
• 1.7.19
• 1.7.20
• 1.7.21
• 1.7.22
• 1.7.23
• 1.7.24
• 1.7.25
• 1.7.26
• 1.7.27
• 1.7.28
• 1.7.29
• 1.7.30
• 1.7.31
• 1.7.32
• 1.7.33
• 1.7.34
• 1.7.35
• 1.7.36
• 1.7.37
• 1.7.38
• 1.7.39
• 1.7.40
• 1.7.41
• 1.7.42
• 1.7.43
• 1.7.44
• 1.7.45
• 1.7.46
• 1.7.47
• 1.7.48
• 1.7.49
• 1.7.50
• 1.7.51
• 1.7.52
• 1.7.53
• 1.7.54
• 1.7.55
• 1.7.56
• 1.7.57
• 1.7.58
• 1.7.59
• 1.7.60
• 1.7.61
• 1.7.62
• 1.7.63
• 1.7.64
• 1.7.65
• 1.7.66
• 1.7.67
• 1.7.68
• 1.7.69
• 1.7.70
• 1.7.71
• 1.7.72
• 1.7.73
• 1.7.74
• 1.7.75
• 1.7.76
• 1.7.77
• 1.7.78
• 1.7.79
• 1.7.80
• 1.7.81
• 1.7.82
• 1.7.83
• 1.7.84
• 1.7.85
• 1.7.86

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

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: Double free
CWE: CWE-415 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
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: 88658
Nessus Name: Amazon Linux AMI : pngcrush (ALAS-2016-646)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 14611
OpenVAS Name: Amazon Linux Local Check: alas-2016-646
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: pngcrush 1.7.87

Timelineinfo

10/04/2015 🔍
10/10/2015 +6 days 🔍
02/09/2016 +122 days 🔍
02/10/2016 +1 days 🔍
08/31/2017 +568 days 🔍
08/31/2017 +0 days 🔍
09/01/2017 +1 days 🔍
11/12/2019 +802 days 🔍

Sourcesinfo

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

CVE: CVE-2015-7700 (🔍)
GCVE (CVE): GCVE-0-2015-7700
GCVE (VulDB): GCVE-100-106042

Entryinfo

Created: 09/01/2017 09:02
Updated: 11/12/2019 15:07
Changes: 09/01/2017 09:02 (65), 11/12/2019 15:07 (9)
Complete: 🔍
Cache ID: 216:003:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

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