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msgpackr's conversion of property names to strings can trigger infinite recursion

High severity GitHub Reviewed Published Dec 28, 2023 in kriszyp/msgpackr • Updated Jan 10, 2024

Package

npm msgpackr (npm)

Affected versions

< 1.10.1

Patched versions

1.10.1

Description

Impact

When decoding user supplied MessagePack messages, users can trigger stuck threads by crafting messages that keep the decoder stuck in a loop.

Patches

The fix is available in v1.10.1

Workarounds

Exploits seem to require structured cloning, replacing the 0x70 extension with your own (that throws an error or does something other than recursive referencing) should mitigate the issue.

References

References

@kriszyp kriszyp published to kriszyp/msgpackr Dec 28, 2023
Published by the National Vulnerability Database Dec 28, 2023
Published to the GitHub Advisory Database Dec 28, 2023
Reviewed Dec 28, 2023
Last updated Jan 10, 2024

Severity

High
8.6
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Weaknesses

CVE ID

CVE-2023-52079

GHSA ID

GHSA-7hpj-7hhx-2fgx

Source code

Credits

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