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Fencer Intel
high 7.5

CVE-2020-8037 json

ppp decapsulator can be convinced to allocate a large amount of memory

published 6y ago modified 4mo ago also EUVD-2020-28949

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.1%
EPSS 3.1% chance of exploitation in 30 days, percentile 87%
public exploits
0
none known

Summary

The ppp decapsulator in tcpdump 4.9.3 can be convinced to allocate a large amount of memory.

Patch / fix

  • apple mac_os_x 10.14.6, 10.15.7
  • apple macos 11.3
  • tcpdump Debian 14, Debian 13, Debian 12 4.9.3-7

debian advisories DEBIAN-CVE-2020-8037

  • tcpdump Ubuntu 18.04 LTS 4.9.3-0ubuntu0.18.04.2
  • tcpdump Ubuntu 20.04 LTS 4.9.3-4ubuntu0.1
  • tcpdump Ubuntu Pro 16.04 LTS 4.9.3-0ubuntu0.16.04.1+esm1

ubuntu advisories UBUNTU-CVE-2020-8037

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • tcpdump RHEL 8 14:4.9.3-2.el8

red hat advisories RHSA-2021:4236

  • tcpdump SLES for SAP 12 SP5, SLES 12 SP5 4.9.2-14.17.1
  • tcpdump SLE Module for Basesystem 15 SP2, SLE Module for Basesystem 15 SP1 4.9.2-3.12.1

suse advisories SUSE-SU-2020:3360-1SUSE-SU-2020:3358-1

  • tcpdump openSUSE Tumbleweed 4.99.1-1.2
  • tcpdump openSUSE Leap 15.2 4.9.2-lp152.7.3.1
  • tcpdump openSUSE Leap 15.1 4.9.2-lp151.4.9.1

opensuse advisories openSUSE-SU-2024:11425-1openSUSE-SU-2020:1986-1openSUSE-SU-2020:1983-1

  • tcpdump AlmaLinux 8 14:4.9.3-2.el8

almalinux advisories ALSA-2021:4236

  • tcpdump Rocky Linux 8 4:4.9.3-2.el8

rocky linux advisories RLSA-2021:4236

  • tcpdump Alpine 3.24, Alpine 3.23, Alpine 3.22 +13 more 4.9.3-r1

alpine advisories ALPINE-CVE-2020-8037

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • tcpdump CBL-Mariner 2.0 4.9.3-3

azure linux advisories AZL-6905

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-8037 updated cvss 7.5

tcpdump: ppp decapsulator can be convinced to allocate a large amount of memory

  • Red Hat Enterprise Linux 5 tcpdump Red Hat Enterprise Linux 6 tcpdump Red Hat Enterprise Linux 7 tcpdump
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) tcpdump 4.9.3-2.el8
    fixed: vendor fix RHSA-2021:4236

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.11% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

  • The TCPdump Group tcpdump

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.