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Full vulnerability report · 2017
CVE-2017-11936High confidence

Microsoft Corporation Microsoft SharePoint: Improper Input Validation

Microsoft Corporation · Microsoft SharePoint

8.8HighCVSS 3.0
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2017-3522

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

Microsoft SharePoint Enterprise Server 2016 allows an elevation of privilege vulnerability due to the way web requests are handled, aka "Microsoft SharePoint Elevation of Privilege Vulnerability".

What

Microsoft SharePoint Enterprise Server 2016 allows an elevation of privilege vulnerability due to the way web requests are handled, aka "Microsoft SharePoint Elevation of Privilege Vulnerability".

Why

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may gain additional privileges.

What

Microsoft SharePoint Enterprise Server 2016 allows an elevation of privilege vulnerability due to the way web requests are handled, aka "Microsoft SharePoint Elevation of Privilege Vulnerability".

Why

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may gain additional privileges.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Improper Input Validation → gain additional privileges
Attack surface
Network
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-20 ↗

CWE-20: Improper Input Validation. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Common Vulnerability Scoring System 3.0: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkPrivilege escalationCWE-20
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

Canadian Centre for Cyber Security · English · AV17-189Microsoft security updates

soft Windows, Microsoft Office and Microsoft Office Services and Web Apps, Microsoft Exchange Server, ChakraCore and Microsoft Malware Protection Engine. CVE References: CVE-2017-11885, CVE-2017-11886, CVE-2017-11887, CVE-2017-11888, CVE-2017-11889, CVE-2017-11890, CVE-2017-11893, CVE-2017-11894, CVE-2017-11895, CVE-2017-11899, CVE-2017-11901, CVE-2017-11903, CVE-2017-11905, CVE-2017-11906, CVE-2017-11907, CVE-2017-11908, CVE-2017-11909, CVE-2017-11910, CVE-2017-11911, CVE-2017-11912, CVE-2017-11913, CVE-2017-11914, CVE-2017-11916, CVE-2017-11918, CVE-2017-11919, CVE-2017-11927, CVE-2017-11930, CVE-2017-11932, CVE-2017-11934, CVE-2017-11935, CVE-2017-11936, CVE-2017-11939, CVE-2017-11940 Suggested Action CCIRC recommends that system administrators test and deploy the vendor-released updates to affected applications accordingly. References: https://portal.msrc.microsoft.com/en-us/security-guidance/releasenotedetail/c383fa60-b852-e711-80dd-000d3a32f9b6 https://portal.msrc.microsoft.com/en-us/security-guidance

Official advisory ↗
CERT-FR · French · CERTFR-2017-AVI-466Multiples vulnérabilités dans Microsoft Office

De multiples vulnérabilités ont été corrigées dans Microsoft Office . Elles permettent à un attaquant de provoquer une élévation de privilèges, une divulgation d'informations et une exécution de code à distance

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2017-011121Microsoft SharePoint Enterprise Server 2016 における権限を昇格される脆弱性

Microsoft SharePoint Enterprise Server 2016 には、Web リクエストの処理に不備があるため、権限を昇格される脆弱性が存在します。 ベンダは、本脆弱性を「Microsoft SharePoint Elevation of Privilege Vulnerability」として公開しています。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-4823MS 12월 보안 위협에 따른 정기 보안 업데이트 권고

913, 11930) o 영향 : 원격코드실행 o 중요도 : 긴급 o 관련 KB번호 - 4052978, 4053578, 4053579, 4053580, 4053581, 4054517, 4054518, 4054519, 4054520 ##### □ 해결책 o 영향 받는 소프트웨어를 이용하는 경우 마이크로소프트사의 보안 패치 적용 Office 보안 업데이트 ##### □ 설명 o 이용자가 특수 제작된 악성 Office 파일을 열람하는 경우, 원격코드실행이 허용되는 취약점 o 관련취약점 : - 정보노출 취약점(CVE-2017-11934, 11939) - 원격코드실행 취약점(CVE-2017-11935) o 영향 : 원격코드실행 o 중요도 : 중요 o 관련 KB 번호 - 4011095, 4011277, 4011575, 4011590, 4011608, 4011612, 4011614 ##### □ 해결책 o 영향 받는 소프트웨어를 이용하는 경우 마이크로소프트사의 보안 패치 적용 SharePoint Enterprise Server 2016 보안 업데이트 ##### □ 설명 o 공격자가 이용자 SharePoint 서버에 특수하게 조작된 요청을 보낼 경우, 접근 제한이 있는 콘텐츠 열람하는 것과 같은 권한상승이 허용되는 취약점 o 관련취약점 : - 권한상승 취약점(CVE-2017-11936) o 영향 : 권한상승 o 중요도 : 중요 o 관련 KB 번호 - 4011576 ##### □ 해결책 o 영향 받는 소프트웨어를 이용하는 경우 마이크로소프트사의 보안 패치 적용 Exchange Server 보안 업데이트 ##### □ 설명 o 공격자가 악성 링크가 포함된 악성 메일로 스푸핑을 시도하여 이용자를 악성 사이트로 리다이렉션하게 만들 수 있는 취약점 o 관련취약점 : - 스푸핑 취약점(CVE-2017-11932) o 영향 : 스푸핑 o 중요도 : 중요 o 관련 KB 번호 - 4045655 ##### □ 해결책 o 영향 받는 소프트웨어를 이용하는 경우 마이크로소프트사의 보안 패치 적용 ChakraCore 보안 업데이트 ##### □ 설명 o 이용자가 Edge로 특수하게 제작된 악성 웹 페이지를 열람할 경우, 원격코드실행이 허용되는 취약점 ※ ChakraCore : Edge의 자바스크립트 엔진, Cloud, 게임엔진, IoT 등에서도 사용 o 관련취약점 : - 정보노출 취약점(CVE-2017-11919) - 원격코드실행 취약점(CVE-2017-11889, 11893, 11894, 11895, 11905, 11908, 11909, 11910, 11911, 11930, 11912, 11914, 11916, 11918) o 영향 : 원격코드실행

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
Microsoft SharePoint: Microsoft SharePoint Enterprise Server 2016
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 12 Dec 2017 · Last source change 16 Sept 2024, 18:55 UTC · CWE-20 · Improper Input Validation

CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-09-01
European sourceENISA EUVD · EUVD-2017-3522
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceNIST NVD
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Vendor guidanceAuthoritative vendor guidance changed from no authoritative guidance recorded to authoritative remediation link · patch.
    Before
    no authoritative guidance recorded
    After
    authoritative remediation link · patch
    af854a3a-2127-422b-91ae-364da2661108 ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    Microsoft SharePoint Enterprise Server 2016 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    Microsoft SharePoint Enterprise Server 2016 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    CNA ↗
  3. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    af854a3a-2127-422b-91ae-364da2661108 ↗
  4. SeveritySeverity changed from Unknown to High.
    Before
    Unknown
    After
    High
    NIST NVD ↗
  5. CVSS scoreCVSS score changed from not recorded to 8.8 (CVSS 3.0 · NIST NVD · CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
    Before
    not recorded
    After
    8.8 (CVSS 3.0 · NIST NVD · CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
    NIST NVD ↗
  6. ENISA EUVD mappingEUVD-2017-3522 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2017-3522"}
    ENISA EUVD ↗
  7. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2017-3522↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2017-11936 · cve.blacktree.nl