Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS1nM3Z2LWcyajUtNDVmMs05dw

ipld/go-codec-dagpb panics when processing certain blocks

Impact

Decoding certain blocks using the go-ipld-prime version of the dag-pb codec (go-codec-dagpb) can cause a panic. The panic comes from an assumption that the reported link length is accurate, but if the block ends before that reported length then it’s a buffer overread.

Patches

The issue is fixed in v1.3.1 and above.

Consumers can discover the versions of go-codec-dagpb in a module's dependency graph using the following command in the module root:

go mod graph | grep go-codec-dagpb

Workarounds

You can work around this issue without upgrading by recovering panics higher in the call stack of the goroutine that calls the defective code.

For more information

If you have any questions or comments about this advisory:

• Ask in IPFS Discord #ipld-chatter
• Open an issue in go-codec-dagpb

Permalink: https://github.com/advisories/GHSA-g3vv-g2j5-45f2
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1nM3Z2LWcyajUtNDVmMs05dw
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: about 2 years ago
Updated: 8 months ago

CVSS Score: 7.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Identifiers: GHSA-g3vv-g2j5-45f2
References:

• https://github.com/ipld/go-codec-dagpb/security/advisories/GHSA-g3vv-g2j5-45f2
• https://github.com/ipld/go-codec-dagpb/commit/a17ace35cc760a2698645c09868f9050fa219f57
• https://pkg.go.dev/vuln/GO-2022-0422
• https://nvd.nist.gov/vuln/detail/CVE-2022-2584
• https://github.com/advisories/GHSA-g3vv-g2j5-45f2

Repository: https://github.com/ipld/go-codec-dagpb
Blast Radius: 21.2

Affected Packages