High severity · published Nov 19, 2019
CVE-2019-18934
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
7.3
CVSS
3.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.2% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
31 · source: NVD
LE
Leap · Opensuse
15.1; 15.2 · source: NVD
UN
Unbound · Nlnetlabs
1.6.4 through 1.9.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-18934
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-18934
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
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MOCR6JP7MSRARTOGEHGST64G4FJGX5VK/
Patch
https://www.nlnetlabs.nl/downloads/unbound/CVE-2019-18934.txt
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