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HistoryFeb 09, 2022 - 10:49 p.m.

TOCTOU Race Condition in Yarn

2022-02-0922:49:38
Google
osv.dev
11
yarn
package integrity
toctou vulnerability
cache pollution
software
fix

EPSS

0.003

Percentile

71.0%

The package integrity validation in yarn < 1.19.0 contains a TOCTOU vulnerability where the hash is computed before writing a package to cache. It’s not computed again when reading from the cache. This may lead to a cache pollution attack. This issue is fixed in 1.19.0.