CVE-2025-24965: .krun_config.json symlink attack creates or overwrites file on the host in crun
Description
crun is an open source OCI Container Runtime fully written in C. In affected versions A malicious container image could trick the krun handler into escaping the root filesystem, allowing file creation or modification on the host. No special permissions are needed, only the ability for the current user to write to the target file. The problem is fixed in crun 1.20 and all users are advised to upgrade. There are no known workarounds for this vulnerability.
Classification
CVE ID: CVE-2025-24965
CVSS Base Severity: HIGH
CVSS Base Score: 8.5
CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Affected Products
Vendor: containers
Product: crun
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.04% (probability of being exploited)
EPSS Percentile: 9.68% (scored less or equal to compared to others)
EPSS Date: 2025-03-20 (when was this score calculated)
References
https://github.com/containers/crun/security/advisories/GHSA-f42g-r5jj-qh4jhttps://github.com/containers/crun/commit/0aec82c2b686f0b1793deed43b46524fe2e8b5a7
https://github.com/containers/crun/releases/tag/1.20