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Red Hat: RHSA-2019-3976-01 Low: Tcpdump Stack-Based Buffer Over-Read

red hat
Calendar Grey November 26, 2019
Dist Redhat Esm H88
A security patch for tcpdump in Red Hat Enterprise Linux 7 addresses a minor severity stack buffer over-read vulnerability.
An update for tcpdump is now available for Red Hat Enterprise Linux 7

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.

Topics%20covered

Topics Covered

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

References

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

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


Severity
low
Lowest
Low
Medium
High
Critical

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

Topic

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 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 update tcpdump network monitoring low severity stack-based buffer over-read

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

Bugs Fixed

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

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