CVE-2019-20917

An issue was discovered in InspIRCd 2 before 2.0.28 and 3 before 3.3.0. The mysql module contains a NULL pointer dereference when built against mariadb-connector-c 3.0.5 or newer. When combined with the sqlauth or sqloper modules, this vulnerability can be used for remote crashing of an InspIRCd server by any user able to connect to a server.

CVSS v3.0 6.5 MEDIUM
CVSS v2.0 6.8 MEDIUM

6.5^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:N/I:N/A:C

Exploitability : 8.0 / Impact : 6.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact COMPLETE

References

Link	Resource
https://docs.inspircd.org/security/2019-02/	Vendor Advisory
https://github.com/inspircd/inspircd/commit/2cc35d8625b7ea5cbd1d1ebb116aff86c5280162	Patch Third Party Advisory
https://github.com/inspircd/inspircd/commit/8745660fcdac7c1b80c94cfc0ff60928cd4dd4b7	Patch Third Party Advisory
https://www.debian.org/security/2020/dsa-4764
https://lists.debian.org/debian-lts-announce/2020/09/msg00015.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:inspircd:inspircd::::::::
	cpe:2.3:a:inspircd:inspircd::::::::

Information

Published : 2020-09-11 05:15

Updated : 2020-09-20 07:15

NVD link : CVE-2019-20917

Mitre link : CVE-2019-20917

JSON object : View

Products Affected

inspircd

inspircd

CWE

CWE-476

NULL Pointer Dereference

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://docs.inspircd.org/security/2019-02/", "name": "https://docs.inspircd.org/security/2019-02/", "tags": ["Vendor Advisory"], "refsource": "MISC"}, {"url": "https://github.com/inspircd/inspircd/commit/2cc35d8625b7ea5cbd1d1ebb116aff86c5280162", "name": "https://github.com/inspircd/inspircd/commit/2cc35d8625b7ea5cbd1d1ebb116aff86c5280162", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://github.com/inspircd/inspircd/commit/8745660fcdac7c1b80c94cfc0ff60928cd4dd4b7", "name": "https://github.com/inspircd/inspircd/commit/8745660fcdac7c1b80c94cfc0ff60928cd4dd4b7", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://www.debian.org/security/2020/dsa-4764", "name": "DSA-4764", "tags": [], "refsource": "DEBIAN"}, {"url": "https://lists.debian.org/debian-lts-announce/2020/09/msg00015.html", "name": "[debian-lts-announce] 20200920 [SECURITY] [DLA 2375-1] inspircd security update", "tags": [], "refsource": "MLIST"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "An issue was discovered in InspIRCd 2 before 2.0.28 and 3 before 3.3.0. The mysql module contains a NULL pointer dereference when built against mariadb-connector-c 3.0.5 or newer. When combined with the sqlauth or sqloper modules, this vulnerability can be used for remote crashing of an InspIRCd server by any user able to connect to a server."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-476"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2019-20917", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 6.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:C", "authentication": "SINGLE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "COMPLETE", "confidentialityImpact": "NONE"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 6.9, "obtainAllPrivilege": false, "exploitabilityScore": 8.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}}, "publishedDate": "2020-09-11T05:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:inspircd:inspircd:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "2.0.28", "versionStartIncluding": "2.0"}, {"cpe23Uri": "cpe:2.3:a:inspircd:inspircd:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "3.3.0", "versionStartIncluding": "3.0"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2020-09-20T07:15Z"}