VDB-217748 · CVE-2023-22899 · ID 485

Zip4j up to 2.11.2 ZIP Archive signature verification

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.
5.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Zip4j up to 2.11.2. It has been declared as critical. This vulnerability affects unknown code of the component ZIP Archive Handler. Such manipulation leads to signature verification. This vulnerability is listed as CVE-2023-22899. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Zip4j up to 2.11.2. Affected by this issue is some unknown processing of the component ZIP Archive Handler. The manipulation with an unknown input leads to a signature verification vulnerability. Using CWE to declare the problem leads to CWE-347. The product does not verify, or incorrectly verifies, the cryptographic signature for data. Impacted is integrity, and availability. CVE summarizes:

Zip4j through 2.11.2, as used in Threema and other products, does not always check the MAC when decrypting a ZIP archive.

The weakness was presented 01/10/2023. The advisory is shared for download at breakingthe3ma.app. This vulnerability is handled as CVE-2023-22899 since 01/10/2023. There are neither technical details nor an exploit publicly available.

Upgrading eliminates this vulnerability. The upgrade is hosted for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-0309). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Zip4j

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Signature verification
CWE: CWE-347 / CWE-345
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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: github.com

Timelineinfo

01/10/2023 🔍
01/10/2023 +0 days 🔍
01/10/2023 +0 days 🔍
07/02/2025 +904 days 🔍

Sourcesinfo

Advisory: 485
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2023-22899 (🔍)
GCVE (CVE): GCVE-0-2023-22899
GCVE (VulDB): GCVE-100-217748
EUVD: 🔍

Entryinfo

Created: 01/10/2023 08:55
Updated: 07/02/2025 13:34
Changes: 01/10/2023 08:55 (40), 01/30/2023 18:26 (1), 01/30/2023 18:33 (11), 04/09/2025 18:35 (16), 07/02/2025 13:34 (1)
Complete: 🔍
Cache ID: 216::103