Tcpdump Libpcap vulnerabilities

CVE-2025-11961 [LOW] CVE-2025-11961: pcap_ether_aton() is an auxiliary function in libpcap, it takes a string argument and returns a fixed-size allocated buffer pcap_ether_aton() is an auxiliary function in libpcap, it takes a string argument and returns a fixed-size allocated buffer. The string argument must be a well-formed MAC-48 address in one of the supported formats, but this requirement has been poorly documented. If an application calls the function with an argument that deviates from th

CVE-2024-8006 [MEDIUM] CWE-476 CVE-2024-8006: Remote packet capture support is disabled by default in libpcap. When a user builds libpcap with re 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 us

CVE-2023-7256 [MEDIUM] CVE-2023-7256: In affected libpcap versions during the setup of a remote packet capture the internal function sock_ 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

CVE-2019-15163 [HIGH] CWE-476 CVE-2019-15163: rpcapd/daemon.c in libpcap before 1.9.1 allows attackers to cause a denial of service (NULL pointer 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.

CVE-2019-15161 [MEDIUM] CWE-131 CVE-2019-15161: rpcapd/daemon.c in libpcap before 1.9.1 mishandles certain length values because of reuse of a varia 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.

CVE-2019-15164 [MEDIUM] CWE-918 CVE-2019-15164: rpcapd/daemon.c in libpcap before 1.9.1 allows SSRF because a URL may be provided as a capture sourc rpcapd/daemon.c in libpcap before 1.9.1 allows SSRF because a URL may be provided as a capture source.

CVE-2019-15162 [MEDIUM] CWE-345 CVE-2019-15162: rpcapd/daemon.c in libpcap before 1.9.1 on non-Windows platforms provides details about why authenti 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.

CVE-2019-15165 [MEDIUM] CWE-770 CVE-2019-15165: sf-pcapng.c in libpcap before 1.9.1 does not properly validate the PHB header length before allocati sf-pcapng.c in libpcap before 1.9.1 does not properly validate the PHB header length before allocating memory.

CVE-2011-1935 [CRITICAL] CVE-2011-1935: pcap-linux.c in libpcap 1.1.1 before commit ea9432fabdf4b33cbc76d9437200e028f1c47c93 when snaplen is pcap-linux.c in libpcap 1.1.1 before commit ea9432fabdf4b33cbc76d9437200e028f1c47c93 when snaplen is set may truncate packets, which might allow remote attackers to send arbitrary data while avoiding detection via crafted packets.