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Red Hat Security Advisory

Synopsis: Low: tcpdump security update
Advisory ID: RHSA-2019:3976-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:3976
Issue date: 2019-11-26
CVE Names: CVE-2018-19519
=====================================================================

1. Summary:

An update for tcpdump is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Low. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client (v. 7) – x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) – x86_64
Red Hat Enterprise Linux Server (v. 7) – ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) – x86_64

3. Description:

The tcpdump packages contain the tcpdump utility for monitoring network
traffic. The tcpdump utility can capture and display the packet headers on
a particular network interface or on all interfaces.

Security Fix(es):

* tcpdump: Stack-based buffer over-read in print-hncp.c:print_prefix() via
crafted pcap (CVE-2018-19519)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, and other related information, refer to the CVE
page(s) listed in the References section.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1655374 – CVE-2018-19519 tcpdump: Stack-based buffer over-read in print-hncp.c:print_prefix() via crafted pcap

6. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source:
tcpdump-4.9.2-4.el7_7.1.src.rpm

x86_64:
tcpdump-4.9.2-4.el7_7.1.x86_64.rpm
tcpdump-debuginfo-4.9.2-4.el7_7.1.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source:
tcpdump-4.9.2-4.el7_7.1.src.rpm

x86_64:
tcpdump-4.9.2-4.el7_7.1.x86_64.rpm
tcpdump-debuginfo-4.9.2-4.el7_7.1.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
tcpdump-4.9.2-4.el7_7.1.src.rpm

ppc64:
tcpdump-4.9.2-4.el7_7.1.ppc64.rpm
tcpdump-debuginfo-4.9.2-4.el7_7.1.ppc64.rpm

ppc64le:
tcpdump-4.9.2-4.el7_7.1.ppc64le.rpm
tcpdump-debuginfo-4.9.2-4.el7_7.1.ppc64le.rpm

s390x:
tcpdump-4.9.2-4.el7_7.1.s390x.rpm
tcpdump-debuginfo-4.9.2-4.el7_7.1.s390x.rpm

x86_64:
tcpdump-4.9.2-4.el7_7.1.x86_64.rpm
tcpdump-debuginfo-4.9.2-4.el7_7.1.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
tcpdump-4.9.2-4.el7_7.1.src.rpm

x86_64:
tcpdump-4.9.2-4.el7_7.1.x86_64.rpm
tcpdump-debuginfo-4.9.2-4.el7_7.1.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2018-19519
https://access.redhat.com/security/updates/classification/#low

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2019 Red Hat, Inc.
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