PT-2020-9730 · Yarn+1 · Yarn+1

Published 2020-03-01 · Updated 2022-02-09 · CVE-2019-15608

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions yarn versions prior to 1.19.0

Description The issue concerns a TOCTOU vulnerability in the package integrity validation. This vulnerability occurs because the hash is computed before writing a package to the cache, but it is not computed again when reading from the cache. This may lead to a cache pollution attack.

Recommendations For versions prior to 1.19.0, update to version 1.19.0 to resolve the issue.

Exploit

Fix

Time Of Check To Time Of Use

Weakness Enumeration

CWE-367

CWE-840

Related Identifiers

ALT-PU-2020-1415

ALT-PU-2020-1988

CVE-2019-15608

GHSA-HJXC-462X-X77J

Affected Products

Alt Linux

Yarn

References · 11

• 🔥 https://hackerone.com/reports/703138 · Exploit
• https://ubuntu.com/security/CVE-2019-15608 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-hjxc-462x-x77j · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-15608 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-15608 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-15608 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-15608 · Security Note
• https://cve.org/CVERecord?id=CVE-2019-15608 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-15608 · Vendor Advisory
• https://github.com/yarnpkg/yarn/blob/master/CHANGELOG.md#1190 · Note
• https://github.com/yarnpkg/yarn/commit/0474b8c66a8ea298f5e4dedc67b2de464297ad1c · Note