Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2019.4489
tcpdump security update
27 November 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: tcpdump
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 7
Red Hat Enterprise Linux WS/Desktop 7
Impact/Access: Denial of Service -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2018-19519
Reference: ESB-2019.0593
ESB-2018.3906
ESB-2018.3885
Original Bulletin:
https://access.redhat.com/errata/RHSA-2019:3976
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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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