CVE-2019-15161

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-10-03 · updated 2026-06-17
Weakness: CWE-131

Description

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.

Affected products

The Tcpdump Group libpcap: before 1.9.1 — fixed in 1.9.1

How to fix

Upgrade to a fixed version: The Tcpdump Group libpcap 1.9.1. Check the vendor advisory for mitigations.

References

http://seclists.org/fulldisclosure/2019/Dec/26
https://github.com/the-tcpdump-group/libpcap/blob/libpcap-1.9/CHANGES
https://github.com/the-tcpdump-group/libpcap/commit/617b12c0339db4891d117b661982126c495439ea
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5P5K3DQ4TFSZBDB3XN4CZNJNQ3UIF3D3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GBIEKWLNIR62KZ5GA7EDXZS52HU6OE5F/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.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

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