CVE-2019-19344

There is a use-after-free issue in all samba 4.9.x versions before 4.9.18, all samba 4.10.x versions before 4.10.12 and all samba 4.11.x versions before 4.11.5, essentially due to a call to realloc() while other local variables still point at the original buffer.

CVSS v3.0 6.5 MEDIUM
CVSS v2.0 4.0 MEDIUM

6.5^/10

CVSS v3.0 : MEDIUM

V3 Legend

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

4.0^/10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://www.samba.org/samba/security/CVE-2019-19344.html	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19344	Issue Tracking Third Party Advisory
https://security.netapp.com/advisory/ntap-20200122-0001/	Third Party Advisory
https://www.synology.com/security/advisory/Synology_SA_20_01	Third Party Advisory
https://usn.ubuntu.com/4244-1/	Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00055.html	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GQ6U65I2K23YJC4FESW477WL55TU3PPT/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4ACZVNMIFQGGXNJPMHAVBN3H2U65FXQY/
https://security.gentoo.org/glsa/202003-52

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:samba:samba::::::::
	cpe:2.3:a:samba:samba::::::::
	cpe:2.3:a:samba:samba::::::::

Configuration 2 (hide)

OR	cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:19.04:::::::*
	cpe:2.3:o:canonical:ubuntu_linux:19.10:::::::*

Configuration 3 (hide)

OR	cpe:2.3:a:synology:directory_server:-:::::::*
	cpe:2.3:a:synology:diskstation_manager:6.2:::::::*
	cpe:2.3:a:synology:router_manager:1.2:::::::*
	cpe:2.3:a:synology:skynas:-:::::::*

Configuration 4 (hide)

cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*

Information

Published : 2020-01-21 10:15

Updated : 2020-03-25 12:15

NVD link : CVE-2019-19344

Mitre link : CVE-2019-19344

JSON object : View

CWE

CWE-416

Use After Free

Products Affected

synology

skynas
diskstation_manager
router_manager
directory_server

canonical

ubuntu_linux

opensuse

leap

samba

samba

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://www.samba.org/samba/security/CVE-2019-19344.html", "name": "https://www.samba.org/samba/security/CVE-2019-19344.html", "tags": ["Vendor Advisory"], "refsource": "MISC"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19344", "name": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-19344", "tags": ["Issue Tracking", "Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://security.netapp.com/advisory/ntap-20200122-0001/", "name": "https://security.netapp.com/advisory/ntap-20200122-0001/", "tags": ["Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://www.synology.com/security/advisory/Synology_SA_20_01", "name": "https://www.synology.com/security/advisory/Synology_SA_20_01", "tags": ["Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://usn.ubuntu.com/4244-1/", "name": "USN-4244-1", "tags": ["Third Party Advisory"], "refsource": "UBUNTU"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00055.html", "name": "openSUSE-SU-2020:0122", "tags": ["Third Party Advisory"], "refsource": "SUSE"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GQ6U65I2K23YJC4FESW477WL55TU3PPT/", "name": "FEDORA-2020-6bd386c7eb", "tags": [], "refsource": "FEDORA"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4ACZVNMIFQGGXNJPMHAVBN3H2U65FXQY/", "name": "FEDORA-2020-f92cd0e72b", "tags": [], "refsource": "FEDORA"}, {"url": "https://security.gentoo.org/glsa/202003-52", "name": "GLSA-202003-52", "tags": [], "refsource": "GENTOO"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "There is a use-after-free issue in all samba 4.9.x versions before 4.9.18, all samba 4.10.x versions before 4.10.12 and all samba 4.11.x versions before 4.11.5, essentially due to a call to realloc() while other local variables still point at the original buffer."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-416"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2019-19344", "ASSIGNER": "secalert@redhat.com"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 4.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P", "authentication": "SINGLE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 2.9, "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": "2020-01-21T18:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "4.9.18", "versionStartIncluding": "4.9.0"}, {"cpe23Uri": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "4.10.12", "versionStartIncluding": "4.10.0"}, {"cpe23Uri": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "4.11.5", "versionStartIncluding": "4.11.0"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:synology:directory_server:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:synology:diskstation_manager:6.2:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:synology:router_manager:1.2:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:synology:skynas:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2020-03-25T19:15Z"}

6.5 /10

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.0 /10

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

JSON object

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