Vulnerability-Lookup

RHSA-2019:3976

Vulnerability from csaf_redhat - Published: 2019-11-26 14:28 - Updated: 2025-11-21 18:11

Summary

Red Hat Security Advisory: tcpdump security update

Severity

Low

Notes

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 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.

Details: 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.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2018-19519

In tcpdump 4.9.2, a stack-based buffer over-read exists in the print_prefix function of print-hncp.c via crafted packet data because of missing initialization.

4.3 (Medium)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

CWE-125 - Out-of-bounds Read

Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2019:3976

References

URL

Category

	https://access.redhat.com/errata/RHSA-2019:3976	self
	https://access.redhat.com/security/updates/classi…	external
	https://bugzilla.redhat.com/show_bug.cgi?id=1655374	external
	https://security.access.redhat.com/data/csaf/v2/a…	self
	https://access.redhat.com/security/cve/CVE-2018-19519	self
	https://bugzilla.redhat.com/show_bug.cgi?id=1655374	external
	https://www.cve.org/CVERecord?id=CVE-2018-19519	external
	https://nvd.nist.gov/vuln/detail/CVE-2018-19519	external

JSON

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          "title": "Vulnerability description"
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            "7Workstation-7.7.Z:tcpdump-14:4.9.2-4.el7_7.1.ppc64",
            "7Workstation-7.7.Z:tcpdump-14:4.9.2-4.el7_7.1.ppc64le",
            "7Workstation-7.7.Z:tcpdump-14:4.9.2-4.el7_7.1.s390x",
            "7Workstation-7.7.Z:tcpdump-14:4.9.2-4.el7_7.1.src",
            "7Workstation-7.7.Z:tcpdump-14:4.9.2-4.el7_7.1.x86_64",
            "7Workstation-7.7.Z:tcpdump-debuginfo-14:4.9.2-4.el7_7.1.ppc64",
            "7Workstation-7.7.Z:tcpdump-debuginfo-14:4.9.2-4.el7_7.1.ppc64le",
            "7Workstation-7.7.Z:tcpdump-debuginfo-14:4.9.2-4.el7_7.1.s390x",
            "7Workstation-7.7.Z:tcpdump-debuginfo-14:4.9.2-4.el7_7.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "tcpdump: Stack-based buffer over-read in print-hncp.c:print_prefix() via crafted pcap"
    }
  ]
}

CVE-2018-19519 (GCVE-0-2018-19519)

Vulnerability from cvelistv5 – Published: 2018-11-25 20:00 – Updated: 2024-08-05 11:37

Summary

In tcpdump 4.9.2, a stack-based buffer over-read exists in the print_prefix function of print-hncp.c via crafted packet data because of missing initialization.

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	http://www.securityfocus.com/bid/106098	vdb-entryx_refsource_BID
	https://github.com/zyingp/temp/blob/master/tcpdump.md	x_refsource_MISC
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
	https://access.redhat.com/errata/RHSA-2019:3976	vendor-advisoryx_refsource_REDHAT
	https://usn.ubuntu.com/4252-2/	vendor-advisoryx_refsource_UBUNTU
	https://usn.ubuntu.com/4252-1/	vendor-advisoryx_refsource_UBUNTU
	https://kb.pulsesecure.net/articles/Pulse_Securit…	x_refsource_CONFIRM

Date Public ?

2018-11-25 00:00

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

RHSA-2019:3976

CVE-2018-19519 (GCVE-0-2018-19519)

Tags

Sightings

Nomenclature