CVE-2021-28099 – com.netflix.hollow:hollow

Package

Manager: maven
Name: com.netflix.hollow:hollow
Vulnerable Version: >=0 <=6.1.0

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00035 pctl0.08533

Details

Insecure temporary file in Netflix OSS Hollow > ID: NFLX-2021-001 > Title: Local information disclosure in Hollow > Release Date: 2021-03-23 > Credit: Security Researcher @JLLeitschuh # Overview Security researcher @JLLeitschuh reported that Netflix Hollow (a Netflix OSS project available here: https://github.com/Netflix/hollow) writes to a local temporary directory before validating the permissions on it. # Impact An attacker with the ability to create directories and set permissions on the local filesystem could pre-create this directory and read or modify anything written there by the Hollow process. # Description Since the `Files.exists(parent)` is run before creating the directories, an attacker can pre-create these directories with wide permissions. Additionally, since an insecure source of randomness is used, the file names to be created can be deterministically calculated. # Workarounds and Fixes Avoid running Hollow in configurations that share a filesystem with less-trusted processes. May be fixed in a future release.

Metadata

Created: 2021-03-29T18:25:26Z
Modified: 2023-08-08T19:54:40Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/03/GHSA-9295-mhf3-v33m/GHSA-9295-mhf3-v33m.json
CWE IDs: ["CWE-377"]
Alternative ID: GHSA-9295-mhf3-v33m
Finding: F028
Auto approve: 1