What’s Vulnerable › Vulnerabilities

CVE-2019-18934

• Severity: high (CVSS 7.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-11-19 · updated 2026-06-17
• Weakness: CWE-78

Description

Unbound 1.6.4 through 1.9.4 contain a vulnerability in the ipsec module that can cause shell code execution after receiving a specially crafted answer. This issue can only be triggered if unbound was compiled with `--enable-ipsecmod` support, and ipsecmod is enabled and used in the configuration.

Affected products

• Fedoraproject Fedora: 31
• NLnet Labs Unbound: from 1.6.4 through 1.9.4
• openSUSE Leap: 15.1, 15.2

References

• http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html
• http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html
• http://www.openwall.com/lists/oss-security/2019/11/19/1
• https://github.com/NLnetLabs/unbound/blob/release-1.9.5/doc/Changelog
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MOCR6JP7MSRARTOGEHGST64G4FJGX5VK/
• https://www.nlnetlabs.nl/downloads/unbound/CVE-2019-18934.txt
• https://www.nlnetlabs.nl/news/2019/Nov/19/unbound-1.9.5-released/
• http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html
• http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html
• http://www.openwall.com/lists/oss-security/2019/11/19/1
• https://github.com/NLnetLabs/unbound/blob/release-1.9.5/doc/Changelog
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MOCR6JP7MSRARTOGEHGST64G4FJGX5VK/

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