What’s Vulnerable › Vulnerabilities

CVE-2018-19519

• Severity: medium (CVSS 5.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-11-25 · updated 2026-06-17
• Weakness: CWE-125

Description

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.

Affected products

• The Tcpdump Group tcpdump: 4.9.2

References

• http://www.securityfocus.com/bid/106098
• https://access.redhat.com/errata/RHSA-2019:3976
• https://github.com/zyingp/temp/blob/master/tcpdump.md
• https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44516
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/62XY42U6HY3H2APR5EHNWCZ7SAQNMMJN/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNYXF3IY2X65IOD422SA6EQUULSGW7FN/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R2UDPOSGVJQIYC33SQBXMDXHH4QDSDMU/
• https://usn.ubuntu.com/4252-1/
• https://usn.ubuntu.com/4252-2/
• http://www.securityfocus.com/bid/106098
• https://access.redhat.com/errata/RHSA-2019:3976
• https://github.com/zyingp/temp/blob/master/tcpdump.md

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