What’s Vulnerable › Vulnerabilities

CVE-2017-5205

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-01-28 · updated 2026-06-17
• Weakness: CWE-119

Description

The ISAKMP parser in tcpdump before 4.9.0 has a buffer overflow in print-isakmp.c:ikev2_e_print().

Affected products

• Debian Linux: 8.0, 9.0
• RedHat Enterprise Linux Desktop: 7.0
• RedHat Enterprise Linux Server: 7.0
• RedHat Enterprise Linux Server Aus: 7.4, 7.6
• RedHat Enterprise Linux Server Eus: 7.4, 7.5, 7.6
• RedHat Enterprise Linux Server Tus: 7.6
• RedHat Enterprise Linux Workstation: 7.0
• The Tcpdump Group tcpdump: before 4.9.0 — fixed in 4.9.0

How to fix

Upgrade to a fixed version: The Tcpdump Group tcpdump 4.9.0. Check the vendor advisory for mitigations.

References

• http://www.debian.org/security/2017/dsa-3775
• http://www.securityfocus.com/bid/95852
• http://www.securitytracker.com/id/1037755
• https://access.redhat.com/errata/RHSA-2017:1871
• https://security.gentoo.org/glsa/201702-30
• https://www.mail-archive.com/debian-bugs-dist%40lists.debian.org/msg1494526.html
• http://www.debian.org/security/2017/dsa-3775
• http://www.securityfocus.com/bid/95852
• http://www.securitytracker.com/id/1037755
• https://access.redhat.com/errata/RHSA-2017:1871
• https://security.gentoo.org/glsa/201702-30
• https://www.mail-archive.com/debian-bugs-dist%40lists.debian.org/msg1494526.html

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