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
High
EPSS
Percentile
9.5%
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.
[
{
"defaultStatus": "unaffected",
"modules": [
"remote packet capture"
],
"product": "libpcap",
"programRoutines": [
{
"name": "pcap_findalldevs_ex()"
}
],
"repo": "https://github.com/the-tcpdump-group/libpcap/",
"vendor": "The Tcpdump Group",
"versions": [
{
"status": "affected",
"version": "1.9.x"
},
{
"lessThanOrEqual": "1.10.4",
"status": "affected",
"version": "1.10.x",
"versionType": "semver"
}
]
}
]