CVE-2019-18934

moderate-risk
Published 2019-11-19

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.

Do I need to act?

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0.67% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.3/10 High
NETWORK / LOW complexity

Affected Products (4)

Affected Vendors

Fedoraproject Opensuse Nlnetlabs

References (14)

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html
Exploit http://www.openwall.com/lists/oss-security/2019/11/19/1
Release Notes https://github.com/NLnetLabs/unbound/blob/release-1.9.5/doc/Changelog
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...
Patch https://www.nlnetlabs.nl/downloads/unbound/CVE-2019-18934.txt
Release Notes https://www.nlnetlabs.nl/news/2019/Nov/19/unbound-1.9.5-released/
Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html
Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html
Exploit http://www.openwall.com/lists/oss-security/2019/11/19/1
Release Notes https://github.com/NLnetLabs/unbound/blob/release-1.9.5/doc/Changelog
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...
Patch https://www.nlnetlabs.nl/downloads/unbound/CVE-2019-18934.txt
Release Notes https://www.nlnetlabs.nl/news/2019/Nov/19/unbound-1.9.5-released/
38
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 2/34 · Minimal
Exposure 10/34 · Low