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. This issue can only be triggered if unbound was compiled with `--enable-ipsecmod` support, and ipsecmod is enabled and used in the configuration.

CVSS v3.0 7.3 HIGH
CVSS v2.0 6.8 MEDIUM

7.3^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/NLnetLabs/unbound/blob/release-1.9.5/doc/Changelog	Release Notes
https://www.nlnetlabs.nl/news/2019/Nov/19/unbound-1.9.5-released/	Release Notes Vendor Advisory
https://www.nlnetlabs.nl/downloads/unbound/CVE-2019-18934.txt	Patch Vendor Advisory
http://www.openwall.com/lists/oss-security/2019/11/19/1	Exploit Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MOCR6JP7MSRARTOGEHGST64G4FJGX5VK/
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html

Configurations

Configuration 1 (hide)

cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*

Information

Published : 2019-11-19 18:15

Updated : 2021-07-21 11:39

NVD link : CVE-2019-18934

Mitre link : CVE-2019-18934

JSON object : View

Products Affected

nlnetlabs

unbound

CWE

CWE-20

Improper Input Validation

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://github.com/NLnetLabs/unbound/blob/release-1.9.5/doc/Changelog", "name": "https://github.com/NLnetLabs/unbound/blob/release-1.9.5/doc/Changelog", "tags": ["Release Notes"], "refsource": "MISC"}, {"url": "https://www.nlnetlabs.nl/news/2019/Nov/19/unbound-1.9.5-released/", "name": "https://www.nlnetlabs.nl/news/2019/Nov/19/unbound-1.9.5-released/", "tags": ["Release Notes", "Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "https://www.nlnetlabs.nl/downloads/unbound/CVE-2019-18934.txt", "name": "https://www.nlnetlabs.nl/downloads/unbound/CVE-2019-18934.txt", "tags": ["Patch", "Vendor Advisory"], "refsource": "MISC"}, {"url": "http://www.openwall.com/lists/oss-security/2019/11/19/1", "name": "[oss-security] 20191119 CVE-2019-18934 Unbound: Vulnerability in IPSEC module", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "refsource": "MLIST"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MOCR6JP7MSRARTOGEHGST64G4FJGX5VK/", "name": "FEDORA-2019-a29e620cd4", "tags": [], "refsource": "FEDORA"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html", "name": "openSUSE-SU-2020:0912", "tags": [], "refsource": "SUSE"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html", "name": "openSUSE-SU-2020:0913", "tags": [], "refsource": "SUSE"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-20"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2019-18934", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 6.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 6.4, "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.3, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 3.4, "exploitabilityScore": 3.9}}, "publishedDate": "2019-11-19T18:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "1.9.4", "versionStartIncluding": "1.6.4"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2021-07-21T11:39Z"}