Tcpdump: >> Libpcap >> 1.0.0 Security Vulnerabilities
In affected libpcap versions during the setup of a remote packet capture the internal function sock_initaddress() calls getaddrinfo() and possibly freeaddrinfo(), but does not clearly indicate to the caller function whether freeaddrinfo() still remains to be called after the function returns. This makes it possible in some scenarios that both the function and its caller call freeaddrinfo() for the same allocated memory block. A similar problem was reported in Apple libpcap, to which Apple assigned CVE-2023-40400.
CVSS Score
4.4
EPSS Score
0.0
Published
2024-08-31
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.
CVSS Score
4.4
EPSS Score
0.0
Published
2024-08-31
rpcapd/daemon.c in libpcap before 1.9.1 mishandles certain length values because of reuse of a variable. This may open up an attack vector involving extra data at the end of a request.
CVSS Score
5.3
EPSS Score
0.029
Published
2019-10-03
rpcapd/daemon.c in libpcap before 1.9.1 on non-Windows platforms provides details about why authentication failed, which might make it easier for attackers to enumerate valid usernames.
CVSS Score
5.3
EPSS Score
0.011
Published
2019-10-03
rpcapd/daemon.c in libpcap before 1.9.1 allows attackers to cause a denial of service (NULL pointer dereference and daemon crash) if a crypt() call fails.
CVSS Score
7.5
EPSS Score
0.022
Published
2019-10-03
rpcapd/daemon.c in libpcap before 1.9.1 allows SSRF because a URL may be provided as a capture source.
CVSS Score
5.3
EPSS Score
0.019
Published
2019-10-03
sf-pcapng.c in libpcap before 1.9.1 does not properly validate the PHB header length before allocating memory.
CVSS Score
5.3
EPSS Score
0.012
Published
2019-10-03