CVE-2017-16931

parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a '%' character in a DTD name.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

V3 Legend

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

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

V2 Legend

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

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3	Patch Third Party Advisory
https://bugzilla.gnome.org/show_bug.cgi?id=766956	Permissions Required
http://xmlsoft.org/news.html	Release Notes Vendor Advisory
https://lists.debian.org/debian-lts-announce/2017/11/msg00041.html
https://www.oracle.com//security-alerts/cpujul2021.html

Configurations

Configuration 1 (hide)

cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*

Information

Published : 2017-11-23 13:29

Updated : 2021-07-20 16:15

NVD link : CVE-2017-16931

Mitre link : CVE-2017-16931

JSON object : View

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

Products Affected

xmlsoft

libxml2

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3", "name": "https://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3", "tags": ["Patch", "Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://bugzilla.gnome.org/show_bug.cgi?id=766956", "name": "https://bugzilla.gnome.org/show_bug.cgi?id=766956", "tags": ["Permissions Required"], "refsource": "CONFIRM"}, {"url": "http://xmlsoft.org/news.html", "name": "http://xmlsoft.org/news.html", "tags": ["Release Notes", "Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "https://lists.debian.org/debian-lts-announce/2017/11/msg00041.html", "name": "[debian-lts-announce] 20171130 [SECURITY] [DLA 1194-1] libxml2 security update", "tags": [], "refsource": "MLIST"}, {"url": "https://www.oracle.com//security-alerts/cpujul2021.html", "name": "N/A", "tags": [], "refsource": "N/A"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a '%' character in a DTD name."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-119"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2017-16931", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 7.5, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "severity": "HIGH", "acInsufInfo": true, "impactScore": 6.4, "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}}, "publishedDate": "2017-11-23T21:29Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "2.9.4"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2021-07-20T23:15Z"}

9.8 /10