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.

References

• https://nvd.nist.gov/vuln/detail/CVE-2019-15161
• the-tcpdump-group/libpcap@617b12c
• https://github.com/the-tcpdump-group/libpcap/blob/libpcap-1.9/CHANGES
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5P5K3DQ4TFSZBDB3XN4CZNJNQ3UIF3D3/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GBIEKWLNIR62KZ5GA7EDXZS52HU6OE5F/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UZTIPUWABYUE5KQOLCKAW65AUUSB7QO6/
• https://seclists.org/bugtraq/2019/Dec/23
• https://support.apple.com/kb/HT210785
• https://support.apple.com/kb/HT210788
• https://support.apple.com/kb/HT210789
• https://support.apple.com/kb/HT210790
• https://www.oracle.com/security-alerts/cpuapr2020.html
• https://www.tcpdump.org/public-cve-list.txt
• http://seclists.org/fulldisclosure/2019/Dec/26