OptiPNG 0.6.4 PNG File use after free

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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.
8.6	$0-$5k	0.00

Summaryinfo

A vulnerability was found in OptiPNG 0.6.4. It has been rated as critical. Affected is an unknown function of the component PNG File Handler. Performing a manipulation results in use after free. This vulnerability is cataloged as CVE-2015-7801. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in OptiPNG 0.6.4. This affects an unknown function of the component PNG File Handler. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Use-after-free vulnerability in OptiPNG 0.6.4 allows remote attackers to execute arbitrary code via a crafted PNG file.

The weakness was shared 04/20/2016 (Website). It is possible to read the advisory at openwall.com. This vulnerability is uniquely identified as CVE-2015-7801 since 10/09/2015. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 86553 (Debian DLA-332-1 : optipng security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196449 (Ubuntu Security Notification for Optipng Vulnerabilities (USN-2951-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (86553). The entries VDB-82339, VDB-82349, VDB-82350 and VDB-82720 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

OptiPNG

Version

0.6.4

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.6

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / 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: 86553
Nessus Name: Debian DLA-332-1 : optipng security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for optipng USN-2951-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/09/2015 🔍
10/22/2015 +13 days 🔍
10/23/2015 +1 days 🔍
04/20/2016 +180 days 🔍
04/20/2016 +0 days 🔍
04/21/2016 +1 days 🔍
07/26/2022 +2287 days 🔍

Sourcesinfo

Advisory: USN-2951-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-7801 (🔍)
GCVE (CVE): GCVE-0-2015-7801
GCVE (VulDB): GCVE-100-82719
See also: 🔍

Entryinfo

Created: 04/21/2016 15:20
Updated: 07/26/2022 12:27
Changes: 04/21/2016 15:20 (52), 10/19/2018 08:11 (19), 07/26/2022 12:27 (3)
Complete: 🔍
Cache ID: 216::103