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CVE-2021-32825

2.7 · LOW

bblfshd is an open source self-hosted server for source code parsing.

Published Aug 16, 2021CWE-23EPSS 0.92%

Overview

CVE-2021-32825 is a low-severity vulnerability. It was published on August 16, 2021 and has a CVSS 3.1 base score of 2.7 (LOW).

This vulnerability has a CVSS 3.1 base score of 2.7, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

bblfshd is an open source self-hosted server for source code parsing. In bblfshd before commit 4265465b9b6fb5663c30ee43806126012066aad4 there is a "zipslip" vulnerability. The unsafe handling of symbolic links in an unpacking routine may enable attackers to read and/or write to arbitrary locations outside the designated target folder. This issue may lead to arbitrary file write (with same permissions as the program running the unpack operation) if the attacker can control the archive file. Additionally, if the attacker has read access to the unpacked files, he may be able to read arbitrary system files the parent process has permissions to read. For more details including a PoC see the referenced GHSL-2020-258.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/bblfsh/bblfshd/commit/4265465b9b6fb5663c30ee43806126012066aad4GitHubgithub.com/bblfsh/bblfshd/pull/341GitHubsecuritylab.github.com/advisories/GHSL-2020-258-zipslip-bblfshd/GitHubgithub.com/bblfsh/bblfshd/commit/4265465b9b6fb5663c30ee43806126012066aad4GitHubgithub.com/bblfsh/bblfshd/pull/341GitHubsecuritylab.github.com/advisories/GHSL-2020-258-zipslip-bblfshd/

How CyberStrike helps

Frequently asked questions

What is CVE-2021-32825?

CVE-2021-32825 is a low-severity vulnerability. It was published on August 16, 2021 and has a CVSS 3.1 base score of 2.7 (LOW).

How severe is CVE-2021-32825?

This vulnerability has a CVSS 3.1 base score of 2.7, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-32825?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-32825?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-32825 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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