Vulnerability CVE-2020-26279
Published: 2021-03-24

Description:
go-ipfs is an open-source golang implementation of IPFS which is a global, versioned, peer-to-peer filesystem. In go-ipfs before version 0.8.0-rc1, it is possible for path traversal to occur with DAGs containing relative paths during retrieval. This can cause files to be overwritten, or written to incorrect output directories. The issue can only occur when a get is done on an affected DAG. This is fixed in version 0.8.0-rc1.

Type:

CWE-22

 (Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'))

CVSS2 => (AV:N/AC:L/Au:S/C:N/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5.5/10
4.9/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
None
Partial
Partial
Affected software
Protocol -> Go-ipfs 

 References:
https://github.com/ipfs/go-ipfs/commit/b7ddba7fe47dee5b1760b8ffe897908417e577b2
https://github.com/ipfs/go-ipfs/security/advisories/GHSA-27pv-q55r-222g
https://github.com/whyrusleeping/tar-utils/commit/20a61371de5b51380bbdb0c7935b30b0625ac227
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