CVE-2025-4598
MediumCVSS 4.7Exploitation Probability (EPSS)
Low risk46th percentile - higher than 46% of all known CVEs
Summary
A vulnerability in systemd-coredump allows an attacker to force a SUID process to crash and replace it with a non-SUID binary to access the original's privileged process coredump. This enables reading sensitive data, such as /etc/shadow content, loaded by the original process.
Risk Assessment
The risk involves potential leakage of sensitive system data, including user passwords, which could lead to privilege escalation and system compromise.
Recommendation
Immediately update systemd to a patched version that fixes the race condition in /proc/pid/auxv analysis. Until patched, restrict access to SUID processes and monitor for unusual crashes.
Original NVD description (English source)
A vulnerability was found in systemd-coredump. This flaw allows an attacker to force a SUID process to crash and replace it with a non-SUID binary to access the original's privileged process coredump, allowing the attacker to read sensitive data, such as /etc/shadow content, loaded by the original process. A SUID binary or process has a special type of permission, which allows the process to run with the file owner's permissions, regardless of the user executing the binary. This allows the process to access more restricted data than unprivileged users or processes would be able to. An attacker can leverage this flaw by forcing a SUID process to crash and force the Linux kernel to recycle the process PID before systemd-coredump can analyze the /proc/pid/auxv file. If the attacker wins the race condition, they gain access to the original's SUID process coredump file. They can read sensitive content loaded into memory by the original binary, affecting data confidentiality.