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2 vulnerabilities found for go-merkledag by ipfs
CVE-2022-23495 (GCVE-0-2022-23495)
Vulnerability from nvd – Published: 2022-12-08 21:25 – Updated: 2025-04-23 16:31
VLAI
EPSS
VEX
Title
ProtoNode may be modified such that common method calls may panic in ipfs/go-merkledag
Summary
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
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-755 - Improper Handling of Exceptional Conditions
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://github.com/ipfs/go-merkledag/security/adv… | x_refsource_CONFIRM |
| https://github.com/ipfs/go-merkledag/issues/90 | x_refsource_MISC |
| https://github.com/ipfs/kubo/issues/9297 | x_refsource_MISC |
| https://github.com/ipfs/go-merkledag/pull/91 | x_refsource_MISC |
| https://github.com/ipfs/go-merkledag/pull/92 | x_refsource_MISC |
| https://github.com/ipfs/go-merkledag/pull/93 | x_refsource_MISC |
| https://en.wikipedia.org/wiki/Directed_acyclic_graph | x_refsource_MISC |
| https://github.com/ipfs/go-merkledag/releases/tag… | x_refsource_MISC |
| https://github.com/ipfs/go-merkledag/releases/tag… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ipfs | go-merkledag |
Affected:
>= 0.4.0, < 0.8.1
|
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CVE-2022-23495 (GCVE-0-2022-23495)
Vulnerability from cvelistv5 – Published: 2022-12-08 21:25 – Updated: 2025-04-23 16:31
VLAI
EPSS
VEX
Title
ProtoNode may be modified such that common method calls may panic in ipfs/go-merkledag
Summary
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
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-755 - Improper Handling of Exceptional Conditions
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://github.com/ipfs/go-merkledag/security/adv… | x_refsource_CONFIRM |
| https://github.com/ipfs/go-merkledag/issues/90 | x_refsource_MISC |
| https://github.com/ipfs/kubo/issues/9297 | x_refsource_MISC |
| https://github.com/ipfs/go-merkledag/pull/91 | x_refsource_MISC |
| https://github.com/ipfs/go-merkledag/pull/92 | x_refsource_MISC |
| https://github.com/ipfs/go-merkledag/pull/93 | x_refsource_MISC |
| https://en.wikipedia.org/wiki/Directed_acyclic_graph | x_refsource_MISC |
| https://github.com/ipfs/go-merkledag/releases/tag… | x_refsource_MISC |
| https://github.com/ipfs/go-merkledag/releases/tag… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ipfs | go-merkledag |
Affected:
>= 0.4.0, < 0.8.1
|
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