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advisory-db/crates/serde_cbor/RUSTSEC-2019-0025.md
Tony Arcieri ac125ee29a Translate database into V3 advisory format (#420) 
As proposed in #240 and tracked in #414, this PR translates all
advisories into the new "V3" advisory format, which is based on Markdown
with leading TOML front matter.

This format makes it easier to see rendered Markdown syntax
descriptions, whether rendered by an IDE or GitHub. This should help
with both crafting advisories initially as well as review, and ideally
encourages more lengthy descriptions.

Support for this format shipped in `cargo-audit` v0.12.0 on
May 6th, 2020.
2020-10-01 18:29:11 -07:00

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[advisory]
id = "RUSTSEC-2019-0025"
package = "serde_cbor"
categories = ["crypto-failure"]
date = "2019-10-03"
keywords = ["stack-overflow", "crash", "denial-of-service"]
url = "https://github.com/pyfisch/cbor/releases/tag/v0.10.2"

[versions]
patched = [">= 0.10.2"]

Flaw in CBOR deserializer allows stack overflow

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.