CVE-2019-10773

Public Exploit

Description

In Yarn before 1.21.1, the package install functionality can be abused to generate arbitrary symlinks on the host filesystem by using specially crafted "bin" keys. Existing files could be overwritten depending on the current user permission set.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.57%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory redhat.com
Affected: n/a Yarn
Published at:
Updated at:

References

Link Tags
https://snyk.io/vuln/SNYK-JS-YARN-537806%2C
https://github.com/yarnpkg/yarn/commit/039bafd74b7b1a88a53a54f8fa6fa872615e90e7 third party advisory patch
https://github.com/yarnpkg/yarn/issues/7761#issuecomment-565493023 third party advisory exploit
https://blog.daniel-ruf.de/critical-design-flaw-npm-pnpm-yarn/ third party advisory exploit
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITY5BC63CCC647DFNUQRQ5AJDKUKUNBI/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3HIZW4NZVV5QY5WWGW2JRP3FHYKZ6ZJ5/ vendor advisory
https://access.redhat.com/errata/RHSA-2020:0475 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-10773?
CVE-2019-10773 has been scored as a high severity vulnerability.
How to fix CVE-2019-10773?
To fix CVE-2019-10773, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-10773 being actively exploited in the wild?
It is possible that CVE-2019-10773 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-10773?
CVE-2019-10773 affects n/a Yarn.
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