CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
Low
Remote packet capture support is disabled by default in libpcap. When a user builds libpcap with remote packet capture support enabled, one of the functions that become available is pcap_findalldevs_ex(). One of the function arguments can be a filesystem path, which normally means a directory with input data files. When the specified path cannot be used as a directory, the function receives NULL from opendir(), but does not check the return value and passes the NULL value to readdir(), which causes a NULL pointer derefence.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 12 | all | libpcap | <= 1.10.3-1 | libpcap_1.10.3-1_all.deb |
Debian | 11 | all | libpcap | <= 1.10.0-2 | libpcap_1.10.0-2_all.deb |
Debian | 999 | all | libpcap | < 1.10.5-1 | libpcap_1.10.5-1_all.deb |
Debian | 13 | all | libpcap | < 1.10.5-1 | libpcap_1.10.5-1_all.deb |