Description

When logs are written to a widely-writable directory (the default), an unprivileged attacker may predict a privileged process's log file path and pre-create a symbolic link to a sensitive file in its place. When that privileged process runs, it will follow the planted symlink and overwrite that sensitive file. To fix that, glog now causes the program to exit (with status code 2) when it finds that the configured log file already exists.

Classification

CVE ID: CVE-2024-45339

Affected Products

Vendor: github.com/golang/glog

Product: github.com/golang/glog

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.05% (probability of being exploited)

EPSS Percentile: 18.25% (scored less or equal to compared to others)

EPSS Date: 2025-02-27 (when was this score calculated)

References

https://github.com/golang/glog/pull/74/commits/b8741656e406e66d6992bc2c9575e460ecaa0ec2
https://github.com/golang/glog/pull/74
https://groups.google.com/g/golang-announce/c/H-Q4ouHWyKs
https://owasp.org/www-community/vulnerabilities/Insecure_Temporary_File
https://pkg.go.dev/vuln/GO-2025-3372

Timeline