CVE-2019-6454
MEDIUM 5.5EPSS 2.0%
An issue was discovered in sd-bus in systemd 239. bus_process_object() in libsystemd/sd-bus/bus-objects.c allocates a variable-length stack buffer for temporarily storing the object path of incoming D-Bus messages. An unprivileged local user can exploit this by sending a specially crafted message to PID1, causing the stack pointer to jump over the stack guard pages into an unmapped memory region and trigger a denial of service (systemd PID1 crash and kernel panic).
- CVSS v3.1
- 5.5 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - CVSS v2.0
- 4.9 MEDIUM
AV:L/AC:L/Au:N/C:N/I:N/A:C - EPSS
- 2.04% chance of exploitation in the next 30 days, 80th percentile
- Published
- 2019-03-17
- Updated
- 2024-08-04