Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2023-23625
CVE-2023-23625:
vulnerability analysis and mitigation
Overview
CVE-2023-23625 affects go-unixfs, an implementation of a unix-like filesystem on top of an ipld merkledag. The vulnerability was discovered and disclosed on February 9, 2023. The issue allows attackers to cause panics and virtual memory leaks when reading malformed HAMT sharded directories through untrusted user input (NVD, GitHub Advisory).
Technical details
The vulnerability stems from bogus 'fanout' parameters in the HAMT directory nodes. When processing malformed tokens, the code could trigger excessive memory consumption and panics. The issue has a CVSS v3.1 Base Score of 7.5 (HIGH) according to NVD assessment, with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (NVD).
Impact
When exploited, the vulnerability can lead to denial of service through system panics and virtual memory leaks. This affects systems that process untrusted user input through the go-unixfs library (GitHub Advisory).
Mitigation and workarounds
Users are advised to upgrade to version 0.4.3 which includes the fix. For those unable to upgrade immediately, the recommended workaround is to avoid feeding untrusted user data to the decoding functions (GitHub Advisory).
Additional resources
Source: This report was generated using AI
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