CVE-2019-15161

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.

Published: 2019-10-03 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-15161 is rated Moderate Risk (50.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.76%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2019-15161

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 2.86% 2.76% -0.09%
2 2026-05-27 2.53% 2.86% +0.33%
3 2025-08-30 — 2.53% —

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-15161

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2019-15161

OS Trackers for CVE-2019-15161

vendor priority summary link
alpine medium CVE-2019-15161: 1 source package rows (libpcap); 9 state rows across 9 repos (3.10-main, 3.12-main, 3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 9, open 0. https://security.alpinelinux.org/vuln/CVE-2019-15161
debian unimportant CVE-2019-15161 unimportant priority: Debian including 1 source packages (libpcap), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2019-15161
redhat low — https://access.redhat.com/security/cve/CVE-2019-15161
suse medium — https://www.suse.com/security/cve/CVE-2019-15161/
ubuntu medium CVE-2019-15161 medium priority: Ubuntu including 1 source packages (libpcap), 6 status rows across 6 suites (bionic, disco, eoan, trusty, upstream, xenial): not-affected 5, released 1. https://ubuntu.com/security/CVE-2019-15161

Affected software / configurations for CVE-2019-15161

Vendor Product Version Raw CPE
tcpdump libpcap < 1.9.1 cpe:2.3:a:tcpdump:libpcap:*:*:*:*:*:*:*:*

References for CVE-2019-15161

URL Tags
http://seclists.org/fulldisclosure/2019/Dec/26
https://github.com/the-tcpdump-group/libpcap/blob/libpcap-1.9/CHANGES Product Release Notes
https://github.com/the-tcpdump-group/libpcap/commit/617b12c0339db4891d117b661982126c495439ea Patch Third Party Advisory
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
https://www.tcpdump.org/public-cve-list.txt Vendor Advisory
cvelogic Threat Intelligence