CVE-2022-23495 Detail
Current 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.
Analysis 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
References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-252 | Unchecked Return Value | NIST |
| CWE-755 | Improper Handling of Exceptional Conditions | GitHub, Inc. |
Change History
1 change records found show changes
Initial Analysis by NIST 12/12/2022 12:46:25 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | CPE Configuration |
OR
*cpe:2.3:a:protocol:go-merkledag:*:*:*:*:*:*:*:* versions from (including) 0.4.0 up to (excluding) 0.8.1
|
|
| Added | CVSS V3.1 |
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
|
| Added | CWE |
NIST CWE-252 |
|
| Changed | Reference Type |
https://en.wikipedia.org/wiki/Directed_acyclic_graph No Types Assigned |
https://en.wikipedia.org/wiki/Directed_acyclic_graph Technical Description, Third Party Advisory |
| Changed | Reference Type |
https://github.com/ipfs/go-merkledag/issues/90 No Types Assigned |
https://github.com/ipfs/go-merkledag/issues/90 Patch, Third Party Advisory |
| Changed | Reference Type |
https://github.com/ipfs/go-merkledag/pull/91 No Types Assigned |
https://github.com/ipfs/go-merkledag/pull/91 Patch, Third Party Advisory |
| Changed | Reference Type |
https://github.com/ipfs/go-merkledag/pull/92 No Types Assigned |
https://github.com/ipfs/go-merkledag/pull/92 Patch, Third Party Advisory |
| Changed | Reference Type |
https://github.com/ipfs/go-merkledag/pull/93 No Types Assigned |
https://github.com/ipfs/go-merkledag/pull/93 Patch, Third Party Advisory |
| Changed | Reference Type |
https://github.com/ipfs/go-merkledag/releases/tag/v0.8.0 No Types Assigned |
https://github.com/ipfs/go-merkledag/releases/tag/v0.8.0 Release Notes, Third Party Advisory |
| Changed | Reference Type |
https://github.com/ipfs/go-merkledag/releases/tag/v0.8.1 No Types Assigned |
https://github.com/ipfs/go-merkledag/releases/tag/v0.8.1 Release Notes, Third Party Advisory |
| Changed | Reference Type |
https://github.com/ipfs/go-merkledag/security/advisories/GHSA-x39j-h85h-3f46 No Types Assigned |
https://github.com/ipfs/go-merkledag/security/advisories/GHSA-x39j-h85h-3f46 Third Party Advisory |
| Changed | Reference Type |
https://github.com/ipfs/kubo/issues/9297 No Types Assigned |
https://github.com/ipfs/kubo/issues/9297 Patch, Third Party Advisory |
Quick Info
CVE Dictionary Entry:
CVE-2022-23495
NVD Published Date:
12/08/2022
NVD Last Modified:
12/12/2022
Source:
GitHub, Inc.