airlift aircompressor up to 3.3 insertion of sensitive information into sent data

Summaryinfo

A vulnerability identified as problematic has been detected in airlift aircompressor up to 3.3. Affected by this issue is some unknown functionality. The manipulation leads to insertion of sensitive information into sent data. This vulnerability is traded as CVE-2025-67721. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in airlift aircompressor up to 3.3. This issue affects some unknown functionality. The manipulation with an unknown input leads to a insertion of sensitive information into sent data vulnerability. Using CWE to declare the problem leads to CWE-201. The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor. Impacted is confidentiality. The summary by CVE is:

Aircompressor is a library with ports of the Snappy, LZO, LZ4, and Zstandard compression algorithms to Java. In versions 3.3 and below, incorrect handling of malformed data in Java-based decompressor implementations for Snappy and LZ4 allow remote attackers to read previous buffer contents via crafted compressed input. With certain crafted compressed inputs, elements from the output buffer can end up in the uncompressed output, potentially leaking sensitive data. This is relevant for applications that reuse the same output buffer to uncompress multiple inputs. This can be the case of a web server that allocates a fix-sized buffer for performance purposes. There is similar vulnerability in GHSA-cmp6-m4wj-q63q. This issue is fixed in version 3.4.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2025-67721 since 12/10/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 3.4 eliminates this vulnerability. Applying the patch f2b489b398779b40c1ee29ddb11d7edef54ddc15 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.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-203174). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• airlift

Name

• aircompressor

Version

• 3.0
• 3.1
• 3.2
• 3.3

License

• open-source

Website

• Product: https://github.com/airlift/aircompressor/

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Be aware that VulDB is the high quality source for vulnerability data.

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