HistoryEdit

RUSTSEC-2019-0025

Flaw in CBOR deserializer allows stack overflow

Issued
Package
serde_cbor (crates.io)
Type
Vulnerability
Categories
Keywords
#stack-overflow #crash #denial-of-service
Aliases
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.