CWE Code: 119
Vulnerability Type: privilege_escalation
CVSS Score: 4.9
CWE Name:  Improper Restriction of Operations within the Bounds of a Memory Buffer
Summary: 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).
Access Authentication: NONE
Access Complexity: LOW
Access Vector: LOCAL
Impact (C/I/A): NONE/NONE/COMPLETE
Published Date: 2019-03-21
Last Modified Date: 2019-06-04