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CVE-2022-23495 Detail

Description

go-merkledag implements the 'DAGService' interface and adds two ipld node types, Protobuf and Raw for the ipfs project. A `ProtoNode` may be modified in such a way as to cause various encode errors which will trigger a panic on common method calls that don't allow for error returns. A `ProtoNode` should only be able to encode to valid DAG-PB, attempting to encode invalid DAG-PB forms will result in an error from the codec. Manipulation of an existing (newly created or decoded) `ProtoNode` using the modifier methods did not account for certain states that would place the `ProtoNode` into an unencodeable form. Due to conformance with the [`github.com/ipfs/go-block-format#Block`](https://pkg.go.dev/github.com/ipfs/go-block-format#Block) and [`github.com/ipfs/go-ipld-format#Node`](https://pkg.go.dev/github.com/ipfs/go-ipld-format#Node) interfaces, certain methods, which internally require a re-encode if state has changed, will panic due to the inability to return an error. This issue has been addressed across a number of pull requests. Users are advised to upgrade to version 0.8.1 for a complete set of fixes. Users unable to upgrade may attempt to mitigate this issue by sanitising inputs when allowing user-input to set a new `CidBuilder` on a `ProtoNode` and by sanitising `Tsize` (`Link#Size`) values such that they are a reasonable byte-size for sub-DAGs where derived from user-input.


Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score matches with CNA score
CNA:  GitHub, Inc.
Base Score:  7.5 HIGH
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: The NVD and the CNA have provided the same score. When this occurs only the CNA information is displayed, but the Acceptance Level icon for the CNA is given a checkmark to signify NVD concurrence.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://en.wikipedia.org/wiki/Directed_acyclic_graph Technical Description  Third Party Advisory 
https://github.com/ipfs/go-merkledag/issues/90 Patch  Third Party Advisory 
https://github.com/ipfs/go-merkledag/pull/91 Patch  Third Party Advisory 
https://github.com/ipfs/go-merkledag/pull/92 Patch  Third Party Advisory 
https://github.com/ipfs/go-merkledag/pull/93 Patch  Third Party Advisory 
https://github.com/ipfs/go-merkledag/releases/tag/v0.8.0 Release Notes  Third Party Advisory 
https://github.com/ipfs/go-merkledag/releases/tag/v0.8.1 Release Notes  Third Party Advisory 
https://github.com/ipfs/go-merkledag/security/advisories/GHSA-x39j-h85h-3f46 Third Party Advisory 
https://github.com/ipfs/kubo/issues/9297 Patch  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-252 Unchecked Return Value cwe source acceptance level NIST  
CWE-755 Improper Handling of Exceptional Conditions Provider acceptance level GitHub, Inc.  

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Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2022-23495
NVD Published Date:
12/08/2022
NVD Last Modified:
12/12/2022
Source:
GitHub, Inc.