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Noroxi
NVD / CVE Program· CNA mitre

CVE-2019-15165: sf-pcapng.c in libpcap before 1.9.1 does not properly validate the PHB header length before allocating memory.

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 2.8% (FIRST EPSS); higher than 86.6% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: libpcap-devel (AlmaLinux:8) 14:1.9.1-4.el8; libpcap (Alpine:v3.10) 1.1.1-r0; libpcap (Alpine:v3.12) 1.9.1-r0.

Low priority for now. Upgrade to libpcap-devel (AlmaLinux:8) 14:1.9.1-4.el8; libpcap (Alpine:v3.10) 1.1.1-r0; libpcap (Alpine:v3.12) 1.9.1-r0 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

MediumCVSS 5.3 · v3.1—No exploit Fix available
Published
Oct 3, 2019
Updated
Jun 16, 2026
EPSS
2.8% · 86th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
21 / 40 · 5.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.8%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2019-15165

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
tcpdumplibpcap
debiandebian linux
opensuseleap
oraclecommunications operations monitor
appleipados
appleiphone os
applemac os x
appletvos
applewatchos
canonicalubuntu linux
fedoraprojectfedora

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • apple ipados13.3
  • apple iphone os13.3
  • apple mac os x10.13 and later · before 10.13.6
  • apple mac os x10.13.6
  • apple mac os x10.14.6
  • apple mac os x10.15.2
  • apple tvos13.3
  • apple watchos6.1.1
  • canonical ubuntu linux12.04
  • canonical ubuntu linux14.04
  • canonical ubuntu linux16.04
  • canonical ubuntu linux18.04
  • canonical ubuntu linux19.04
  • debian debian linux8.0
  • debian debian linux9.0
  • fedoraproject fedora29
  • fedoraproject fedora30
  • fedoraproject fedora31
  • opensuse leap15.0
  • opensuse leap15.1

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8libpcap-develbefore 14:1.9.1-4.el814:1.9.1-4.el8
Alpine:v3.10libpcapbefore 1.1.1-r01.1.1-r0
Alpine:v3.12libpcapbefore 1.9.1-r01.9.1-r0
Debian:12libpcapbefore 1.9.1-11.9.1-1
Debian:8libpcapbefore 1.6.2-2+deb8u11.6.2-2+deb8u1
Debian:9libpcapbefore 1.8.1-3+deb9u11.8.1-3+deb9u1
openSUSE:Leap 15.0libpcapbefore 1.8.1-lp150.3.3.11.8.1-lp150.3.3.1
openSUSE:Leap 15.1libpcapbefore 1.8.1-lp151.4.3.11.8.1-lp151.4.3.1
Red Hat:enterprise_linux:8::baseoslibpcapbefore 14:1.9.1-4.el814:1.9.1-4.el8
Red Hat:enterprise_linux:8::baseoslibpcap-debuginfobefore 14:1.9.1-4.el814:1.9.1-4.el8
Red Hat:enterprise_linux:8::baseoslibpcap-debugsourcebefore 14:1.9.1-4.el814:1.9.1-4.el8
Red Hat:enterprise_linux:8::crblibpcap-develbefore 14:1.9.1-4.el814:1.9.1-4.el8
SUSE:HPE Helion OpenStack 8libpcapbefore 1.8.1-10.3.11.8.1-10.3.1
SUSE:HPE Helion OpenStack 8tcpdumpbefore 4.9.2-14.14.14.9.2-14.14.1
SUSE:Linux Enterprise Module for Basesystem 15libpcapbefore 1.8.1-4.3.11.8.1-4.3.1

Same product

tcpdump: all records

Other highest-scoring records for the same primary product.

  • CVE-2011-1935pcap-linux.c in libpcap 1.1.1 before commit ea9432fabdf4b33cbc76d9437200e028f1c47c93 when snaplen is set may truncate packets, which might a
    40Plan
  • CVE-2019-15163rpcapd/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
    31Monitor
  • CVE-2019-15164rpcapd/daemon.c in libpcap before 1.9.1 allows SSRF because a URL may be provided as a capture source.
    22Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2019-15161Oct 3, 2019 · rpcapd/daemon.c in libpcap before 1.9.1 mishandles certain length values because of reuse of a variable.
    22Monitor
  • ← EarlierCVE-2019-15162Oct 3, 2019 · rpcapd/daemon.c in libpcap before 1.9.1 on non-Windows platforms provides details about why authentication failed, which might make it easie
    22Monitor
  • Later →CVE-2023-7256Aug 30, 2024 · Double-free in libpcap before 1.10.5 with remote packet capture support.
    17Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
almalinux:libpcap-devel14:1.9.1-4.el8 · AlmaLinux:8Package registry (OSV)
alpine:libpcap1.1.1-r0 · Alpine:v3.10Package registry (OSV)
debian:libpcap1.9.1-1 · Debian:12Package registry (OSV)
opensuse:libpcap1.8.1-lp150.3.3.1 · openSUSE:Leap 15.0Package registry (OSV)
red hat:libpcap14:1.9.1-4.el8 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:libpcap-debuginfo14:1.9.1-4.el8 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:libpcap-debugsource14:1.9.1-4.el8 · Red Hat:enterprise_linux:8::baseosPackage registry (OSV)
red hat:libpcap-devel14:1.9.1-4.el8 · Red Hat:enterprise_linux:8::crbPackage registry (OSV)
suse:libpcap1.8.1-10.3.1 · SUSE:HPE Helion OpenStack 8Package registry (OSV)
suse:tcpdump4.9.2-14.14.1 · SUSE:HPE Helion OpenStack 8Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
low · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-770 · Allocation of Resources Without Limits or Throttling

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (19 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records