CVE-2017-17484

The ucnv_UTF8FromUTF8 function in ucnv_u8.cpp in International Components for Unicode (ICU) for C/C++ through 60.1 mishandles ucnv_convertEx calls for UTF-8 to UTF-8 conversion, which allows remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted string, as demonstrated by ZNC.

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

9.8^/10

CVSS v3.0 : CRITICAL

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

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://ssl.icu-project.org/trac/ticket/13510	Issue Tracking Vendor Advisory
https://ssl.icu-project.org/trac/ticket/13490	Issue Tracking Vendor Advisory
https://ssl.icu-project.org/trac/changeset/40715	Issue Tracking Vendor Advisory
https://ssl.icu-project.org/trac/changeset/40714	Issue Tracking Patch Vendor Advisory
https://ssl.icu-project.org/trac/attachment/ticket/13490/poc.cpp	Exploit Vendor Advisory
https://github.com/znc/znc/issues/1459	Issue Tracking Third Party Advisory
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html

Advertisement

Configurations

Configuration 1 (hide)

cpe:2.3:a:icu-project:international_components_for_unicode:*:*:*:*:*:c\/c\+\+:*:*

Information

Published : 2017-12-10 12:29

Updated : 2019-04-23 12:29

NVD link : CVE-2017-17484

Mitre link : CVE-2017-17484

JSON object : View

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

Advertisement

Products Affected

icu-project

international_components_for_unicode

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://ssl.icu-project.org/trac/ticket/13510", "name": "https://ssl.icu-project.org/trac/ticket/13510", "tags": ["Issue Tracking", "Vendor Advisory"], "refsource": "MISC"}, {"url": "https://ssl.icu-project.org/trac/ticket/13490", "name": "https://ssl.icu-project.org/trac/ticket/13490", "tags": ["Issue Tracking", "Vendor Advisory"], "refsource": "MISC"}, {"url": "https://ssl.icu-project.org/trac/changeset/40715", "name": "https://ssl.icu-project.org/trac/changeset/40715", "tags": ["Issue Tracking", "Vendor Advisory"], "refsource": "MISC"}, {"url": "https://ssl.icu-project.org/trac/changeset/40714", "name": "https://ssl.icu-project.org/trac/changeset/40714", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "refsource": "MISC"}, {"url": "https://ssl.icu-project.org/trac/attachment/ticket/13490/poc.cpp", "name": "https://ssl.icu-project.org/trac/attachment/ticket/13490/poc.cpp", "tags": ["Exploit", "Vendor Advisory"], "refsource": "MISC"}, {"url": "https://github.com/znc/znc/issues/1459", "name": "https://github.com/znc/znc/issues/1459", "tags": ["Issue Tracking", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html", "name": "https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html", "tags": [], "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "The ucnv_UTF8FromUTF8 function in ucnv_u8.cpp in International Components for Unicode (ICU) for C/C++ through 60.1 mishandles ucnv_convertEx calls for UTF-8 to UTF-8 conversion, which allows remote attackers to cause a denial of service (stack-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted string, as demonstrated by ZNC."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-119"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2017-17484", "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", "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": "2017-12-10T20:29Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:icu-project:international_components_for_unicode:*:*:*:*:*:c\\/c\\+\\+:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "60.1"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2019-04-23T19:29Z"}