Sql Server CVE-2023-36728

MEDIUM

Out-of-bounds Read (CWE-125)

2023-10-10 secure@microsoft.com

Buffer Overflow Denial Of Service Information Disclosure Microsoft Sql Server Odbc Driver For Sql Server Ole Db Driver For Sql Server

5.5

CVSS 3.1 · Vendor: microsoft

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Vulnerability Assessment

Weakness	CWE CWE-125 ASVS 5.0 V15 - Secure Coding and Architecture Bounds checking, read limits MITRE ATT&CK 1 technique across 1 tactic: Collection The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 5.5 (MEDIUM). Attack characteristics: local attack vector, low complexity, low privileges required, no user interaction not required.
Exploit ScenarioDerived	A local attacker with access to the system could read data from memory outside the intended buffer boundaries.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

Patch available 0.9% exploitation probability (EPSS)

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AnalysisAI

Microsoft SQL Server Denial of Service Vulnerability. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This Out-of-bounds Read vulnerability could allow attackers to read data from memory outside the intended buffer boundaries.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Validate array indices and buffer lengths. Use memory-safe languages. Enable AddressSanitizer during testing.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

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Technical ContextAI · show details

This vulnerability is classified as Out-of-bounds Read (CWE-125), which allows attackers to read data from memory outside the intended buffer boundaries. Affected products include: Microsoft Odbc Driver For Sql Server, Microsoft Ole Db Driver For Sql Server, Microsoft Sql Server.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (microsoft) PRIMARY 5.5 MEDIUM

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

Primary rating from Vendor (microsoft) · only source for this CVE.

CVSS VectorVendor: microsoft

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

DescriptionCVE.org

Microsoft SQL Server Denial of Service Vulnerability

Threat Intelligence Overview

EPSS Score

0.9%

Top 46% exploitable

Data Quality

2 sources

Confidence: Low

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC No

EPSS 0.9%

Patch available Yes

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Defer

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

No

Human Impact· derived

Medium

Priority Score

29

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +28

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:a:microsoft:odbc_driver_for_sql_server:*:*:*:*:*:linux:*:*

cpe:2.3:a:microsoft:odbc_driver_for_sql_server:*:*:*:*:*:macos:*:*

cpe:2.3:a:microsoft:odbc_driver_for_sql_server:*:*:*:*:*:windows:*:*

cpe:2.3:a:microsoft:odbc_driver_for_sql_server:*:*:*:*:*:linux:*:*

cpe:2.3:a:microsoft:odbc_driver_for_sql_server:*:*:*:*:*:macos:*:*

cpe:2.3:a:microsoft:odbc_driver_for_sql_server:*:*:*:*:*:windows:*:*

cpe:2.3:a:microsoft:ole_db_driver_for_sql_server:*:*:*:*:*:*:*:*

cpe:2.3:a:microsoft:ole_db_driver_for_sql_server:*:*:*:*:*:*:*:*

cpe:2.3:a:microsoft:sql_server:2014:sp3:*:*:*:*:*:*

cpe:2.3:a:microsoft:sql_server:2016:sp3:*:*:*:*:x64:*

cpe:2.3:a:microsoft:sql_server:2017:*:*:*:*:*:x64:*

cpe:2.3:a:microsoft:sql_server:2019:*:*:*:*:*:x64:*

cpe:2.3:a:microsoft:sql_server:2022:*:*:*:*:*:x64:*

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References

Advisories & patches

PATCH https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36728

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