Konloch Bytecode Viewer up to 2.10.x Archive path traversal

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.9$0-$5k0.00

A vulnerability classified as critical has been found in Konloch Bytecode Viewer up to 2.10.x. This affects an unknown code of the component Archive Handler. The manipulation with an unknown input leads to a directory traversal vulnerability. CWE is classifying the issue as CWE-22. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Bytecode Viewer (BCV) is a Java/Android reverse engineering suite. Versions of the package prior to 2.11.0 are vulnerable to Arbitrary File Write via Archive Extraction (AKA "Zip Slip"). The vulnerability is exploited using a specially crafted archive that holds directory traversal filenames (e.g. ../../evil.exe). The Zip Slip vulnerability can affect numerous archive formats, including zip, jar, tar, war, cpio, apk, rar and 7z. The attacker can then overwrite executable files and either invoke them remotely or wait for the system or user to call them, thus achieving remote command execution on the victim’s machine. The impact of a Zip Slip vulnerability would allow an attacker to create or overwrite existing files on the filesystem. In the context of a web application, a web shell could be placed within the application directory to achieve code execution. All users should upgrade to BCV v2.11.0 when possible to receive a patch. There are no recommended workarounds aside from upgrading.

The weakness was published 01/13/2022 as GHSA-3wq9-j4fc-4wmc. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2022-21675 since 11/16/2021. The exploitability is told to be easy. It is possible to initiate the attack remotely. A authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 2.11.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 1ec02658fe6858162f5e6a24f97928de6696c5cb is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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CPE 2.3infoedit

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CVSSv3infoedit

VulDB Meta Base Score: 8.1
VulDB Meta Temp Score: 7.9

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

CNA Base Score: 9.9
CNA Vector (GitHub, Inc.): 🔒

CVSSv2infoedit

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfoedit

Class: Directory traversal
CWE: CWE-22
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

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

Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Bytecode Viewer 2.11.0
Patch: 1ec02658fe6858162f5e6a24f97928de6696c5cb

Timelineinfoedit

11/16/2021 CVE assigned
01/13/2022 +58 days Advisory disclosed
01/13/2022 +0 days VulDB entry created
01/15/2022 +2 days VulDB last update

Sourcesinfoedit

Advisory: GHSA-3wq9-j4fc-4wmc
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2022-21675 (🔒)

Entryinfoedit

Created: 01/13/2022 06:28 AM
Updated: 01/15/2022 11:39 AM
Changes: (1) source_cve_nvd_summary
Complete: 🔍

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