Yz1 0.30/0.32 Filename buffer overflow

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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.
6.7	$0-$5k	0.00

A vulnerability classified as critical was found in Yz1 0.30/0.32. Affected by this vulnerability is some unknown functionality of the component Filename Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-120. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in Yz1 0.30 and 0.32, as used in IZArc 4.4, ZipGenius 6.3.2.3116, and Explzh (extension) 8.14, allows attackers to execute arbitrary code via a crafted archive file, related to filename handling.

The weakness was presented 02/22/2021. It is possible to read the advisory at illikainen.dev. This vulnerability is known as CVE-2020-24175 since 08/13/2020. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are unknown but a public exploit is available.

It is declared as proof-of-concept. It is possible to download the exploit at gist.github.com.

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

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VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.7

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

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Exploitinginfoedit

Class: Memory corruption
CWE: CWE-120
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Countermeasuresinfoedit

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfoedit

08/13/2020 CVE assigned
02/22/2021 +193 days Advisory disclosed
02/22/2021 +0 days VulDB entry created
03/04/2021 +10 days VulDB last update

Sourcesinfoedit

Advisory: illikainen.dev
Status: Not defined

CVE: CVE-2020-24175 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfoedit