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Red Hat Enterprise Linux 8 RHSA-2020-1604-01 Low: Tcpdump Buffer Over-Read

red hat
Calendar Grey April 28, 2020
Dist Redhat Esm H88
The update from Red Hat addresses a minor severity tcpdump vulnerability concerning a buffer over-read flaw. For further information, please read on.
An update for tcpdump is now available for Red Hat Enterprise Linux 8

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

Summary

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.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.2 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory Red Hat software update tcpdump network monitoring low severity buffer over-read

References

https://access.redhat.com/security/cve/CVE-2018-19519 https://access.redhat.com/security/updates/classification/#low https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.2_release_notes/index

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: tcpdump-4.9.2-6.el8.src.rpm
aarch64: tcpdump-4.9.2-6.el8.aarch64.rpm tcpdump-debuginfo-4.9.2-6.el8.aarch64.rpm tcpdump-debugsource-4.9.2-6.el8.aarch64.rpm
ppc64le: tcpdump-4.9.2-6.el8.ppc64le.rpm tcpdump-debuginfo-4.9.2-6.el8.ppc64le.rpm tcpdump-debugsource-4.9.2-6.el8.ppc64le.rpm
s390x: tcpdump-4.9.2-6.el8.s390x.rpm tcpdump-debuginfo-4.9.2-6.el8.s390x.rpm tcpdump-debugsource-4.9.2-6.el8.s390x.rpm
x86_64: tcpdump-4.9.2-6.el8.x86_64.rpm tcpdump-debuginfo-4.9.2-6.el8.x86_64.rpm tcpdump-debugsource-4.9.2-6.el8.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/


Severity
low
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:1604-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:1604
Issue date: 2020-04-28

Topic

An update for tcpdump is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Low. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory Red Hat software update tcpdump network monitoring low severity buffer over-read

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

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

1715423 - tcpdump %pre creates user and groups unconditionally, raising alerts in corporate environment

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