Reported

April 27, 2019

Issued

October 1, 2020 (last modified: June 13, 2023)

Package

ammonia (crates.io)

Type

Vulnerability

Keywords

#stack-overflow #crash

Aliases

• CVE-2019-15542
• GHSA-5hp8-35wj-m525

References

• https://github.com/rust-ammonia/ammonia/blob/master/CHANGELOG.md#210

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

Patched

• >=2.1.0

Affected Functions

Version

ammonia::Document::to_string

• <2.1.0

ammonia::Document::write_to

• <2.1.0

ammonia::clean

• <2.1.0

Description

Affected versions of this crate did use recursion for serialization of HTML DOM trees.

This allows an attacker to cause abort due to stack overflow by providing a pathologically nested input.

The flaw was corrected by serializing the DOM tree iteratively instead.

Advisory available under CC0-1.0 license.