Reported

October 3, 2019

Issued

October 2, 2020 (last modified: October 19, 2021)

Package

serde_cbor (crates.io)

Type

Vulnerability

Categories

• crypto-failure

Keywords

#stack-overflow #crash #denial-of-service

Aliases

• CVE-2019-25001

Details

https://github.com/pyfisch/cbor/releases/tag/v0.10.2

CVSS Score

7.5 HIGH

CVSS Details

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

CVSS Vector

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

Patched

• >=0.10.2

Description

Affected versions of this crate did not properly check if semantic tags were nested excessively during deserialization.

This allows an attacker to craft small (< 1 kB) CBOR documents that cause a stack overflow.

The flaw was corrected by limiting the allowed number of nested tags.