CVE-2017-11742

The writeRandomBytes_RtlGenRandom function in xmlparse.c in libexpat in Expat 2.2.1 and 2.2.2 on Windows allows local users to gain privileges via a Trojan horse ADVAPI32.DLL in the current working directory because of an untrusted search path, aka DLL hijacking.

CVSS v3.0 7.8 HIGH
CVSS v2.0 4.6 MEDIUM

7.8^/10

CVSS v3.0 : HIGH

V3 Legend

Vector : AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.6^/10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 3.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/libexpat/libexpat/issues/82	Issue Tracking Patch Third Party Advisory
http://www.securityfocus.com/bid/100147	Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

AND

OR	cpe:2.3:a:libexpat_project:libexpat:2.2.1:::::::*
	cpe:2.3:a:libexpat_project:libexpat:2.2.2:::::::*

cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*

Information

Published : 2017-07-30 07:29

Updated : 2017-08-09 11:55

NVD link : CVE-2017-11742

Mitre link : CVE-2017-11742

JSON object : View

CWE

CWE-426

Untrusted Search Path

Products Affected

libexpat_project

libexpat

microsoft

windows

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://github.com/libexpat/libexpat/issues/82", "name": "https://github.com/libexpat/libexpat/issues/82", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "http://www.securityfocus.com/bid/100147", "name": "100147", "tags": ["Third Party Advisory", "VDB Entry"], "refsource": "BID"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "The writeRandomBytes_RtlGenRandom function in xmlparse.c in libexpat in Expat 2.2.1 and 2.2.2 on Windows allows local users to gain privileges via a Trojan horse ADVAPI32.DLL in the current working directory because of an untrusted search path, aka DLL hijacking."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-426"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2017-11742", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 4.6, "accessVector": "LOCAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "impactScore": 6.4, "obtainAllPrivilege": false, "exploitabilityScore": 3.9, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}}, "publishedDate": "2017-07-30T14:29Z", "configurations": {"nodes": [{"children": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:libexpat_project:libexpat:2.2.1:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:libexpat_project:libexpat:2.2.2:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}]}], "operator": "AND", "cpe_match": []}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2017-08-09T18:55Z"}

7.8 /10