HistoryEdit

RUSTSEC-2021-0001

XSS in mdBook's search page

Issued
Package
mdbook (crates.io)
Type
Vulnerability
Categories
Keywords
#xss
Aliases
Details
https://groups.google.com/g/rustlang-security-announcements/c/3-sO6of29O0
CVSS Score
6.1 MEDIUM
CVSS Details
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Patched
  • >=0.4.5
Unaffected
  • <=0.1.3
Keywords
#xss

Description

This is a cross-post of the official security advisory. The official post contains a signed version with our PGP key, as well.

The Rust Security Response Working Group was recently notified of a security issue affecting the search feature of mdBook, which could allow an attacker to execute arbitrary JavaScript code on the page.

The CVE for this vulnerability is CVE-2020-26297.

Overview

The search feature of mdBook (introduced in version 0.1.4) was affected by a cross site scripting vulnerability that allowed an attacker to execute arbitrary JavaScript code on an user's browser by tricking the user into typing a malicious search query, or tricking the user into clicking a link to the search page with the malicious search query prefilled.

mdBook 0.4.5 fixes the vulnerability by properly escaping the search query.

Mitigations

Owners of websites built with mdBook have to upgrade to mdBook 0.4.5 or greater and rebuild their website contents with it. It's possible to install mdBook 0.4.5 on the local system with:

cargo install mdbook --version 0.4.5 --force

Acknowledgements

Thanks to Kamil Vavra for responsibly disclosing the vulnerability to us according to our security policy.

Timeline of events

All times are listed in UTC.