Yarn up to 1.21.0 Package Installer link following

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Yarn up to 1.21.0. It has been classified as critical. Impacted is an unknown function of the component Package Installer. This manipulation causes link following. The identification of this vulnerability is CVE-2019-10773. The attack can only be executed locally. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Yarn up to 1.21.0. It has been declared as critical. Affected by this vulnerability is an unknown code block of the component Package Installer. The manipulation with an unknown input leads to a link following vulnerability. The CWE definition for the vulnerability is CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was shared 12/16/2019 (GitHub Repository). The advisory is shared at github.com. This vulnerability is known as CVE-2019-10773 since 04/03/2019. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

Upgrading to version 1.21.1 eliminates this vulnerability.

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Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 5.3
VulDB Temp Score: 4.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Link following
CWE: CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Yarn 1.21.1
Patch: github.com

Timelineinfo

04/03/2019 🔍
12/16/2019 +257 days 🔍
12/17/2019 +1 days 🔍
03/12/2024 +1547 days 🔍

Sourcesinfo

Advisory: RHSA-2020:0475
Status: Not defined

CVE: CVE-2019-10773 (🔍)
GCVE (CVE): GCVE-0-2019-10773
GCVE (VulDB): GCVE-100-147229

Entryinfo

Created: 12/17/2019 07:45
Updated: 03/12/2024 10:24
Changes: 12/17/2019 07:45 (38), 12/17/2019 07:50 (17), 03/12/2024 10:24 (5)
Complete: 🔍
Cache ID: 216::103

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