Sourced from The GitHub Security Advisory Database.

Denial of Service in js-yaml Versions of js-yaml prior to 3.13.0 are vulnerable to Denial of Service. By parsing a carefully-crafted YAML file, the node process stalls and may exhaust system resources leading to a Denial of Service.

Recommendation

Upgrade to version 3.13.0.

Affected versions: < 3.13.0

Sourced from The GitHub Security Advisory Database.

Code Injection in js-yaml Versions of js-yaml prior to 3.13.1 are vulnerable to Code Injection. The load() function may execute arbitrary code injected through a malicious YAML file. Objects that have toString as key, JavaScript code as value and are used as explicit mapping keys allow attackers to execute the supplied code through the load() function. The safeLoad() function is unaffected.

An example payload is { toString: ! 'function (){return Date.now()}' } : 1 which returns the object { "1553107949161": 1 }

Recommendation

Upgrade to version 3.13.1.

Affected versions: < 3.13.1

Sourced from js-yaml's changelog.

[3.14.1] - 2020年12月07日

Security

• Fix possible code execution in (already unsafe) .load() (in &anchor).

[3.14.0] - 2020年05月22日

Changed

• Support safe/loadAll(input, options) variant of call.
• CI: drop outdated nodejs versions.
• Dev deps bump.

Fixed

• Quote = in plain scalars #519.
• Check the node type for !<?> tag in case user manually specifies it.
• Verify that there are no null-bytes in input.
• Fix wrong quote position when writing condensed flow, #526.

[3.13.1] - 2019年04月05日

Security

• Fix possible code execution in (already unsafe) .load(), #480.

[3.13.0] - 2019年03月20日

Security

• Security fix: safeLoad() can hang when arrays with nested refs used as key. Now throws exception for nested arrays. #475.

• 37caaad 3.14.1 released
• 094c0f7 dist rebuild
• 9586ebe Avoid calling hasOwnProperty of user-controlled objects
• 34e5072 3.14.0 released
• 7b25c83 Browser files rebuild
• 6f73473 Dev deps bump
• 0c29349 Travis-CI: drop old nodejs versions
• 10be97e fix(loader): Add support for safe/loadAll(input, options)
• d6983dd Fix issue #526: wrong quote position writing condensed flow (#527)
• 93fbf7d fix issue 526 (wrong quote position writing condensed flow)
• Additional commits viewable in compare view

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