CVE-2023-21676

published 2023-01-10

CVE-2023-21676: Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability

Priority P3 56 high 8.8 CVSS 3.1

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

Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability

Affected

26 ranges · showing 25

Vendor	Product	Version range	Fixed in
microsoft	windows_10_version_1809	>= 10.0.0 < 10.0.17763.3887	10.0.17763.3887
microsoft	windows_10_version_1809	>= 10.0.17763.0 < 10.0.17763.3887	10.0.17763.3887
microsoft	windows_10_version_20h2	>= 10.0.0 < 10.0.19042.2486	10.0.19042.2486
microsoft	windows_10_version_21h2	>= 10.0.19043.0 < 10.0.19044.2486	10.0.19044.2486
microsoft	windows_10_version_22h2	>= 10.0.19045.0 < 10.0.19045.2486	10.0.19045.2486
microsoft	windows_11_version_21h2	>= 10.0.0 < 10.0.22000.1455	10.0.22000.1455
microsoft	windows_11_version_22h2	>= 10.0.22621.0 < 10.0.22621.1105	10.0.22621.1105
microsoft	windows_server_2019	>= 10.0.17763.0 < 10.0.17763.3887	10.0.17763.3887
microsoft	windows_server_2022	>= 10.0.20348.0 < 10.0.20348.1487	10.0.20348.1487
msrc	windows_10_version_1809_for_32-bit_systems	—	—
msrc	windows_10_version_1809_for_arm64-based_systems	—	—
msrc	windows_10_version_1809_for_x64-based_systems	—	—
msrc	windows_10_version_20h2_for_32-bit_systems	—	—
msrc	windows_10_version_20h2_for_arm64-based_systems	—	—
msrc	windows_10_version_21h2_for_32-bit_systems	—	—
msrc	windows_10_version_21h2_for_arm64-based_systems	—	—
msrc	windows_10_version_21h2_for_x64-based_systems	—	—
msrc	windows_10_version_22h2_for_32-bit_systems	—	—
msrc	windows_10_version_22h2_for_arm64-based_systems	—	—
msrc	windows_10_version_22h2_for_x64-based_systems	—	—
msrc	windows_11_version_21h2_for_arm64-based_systems	—	—
msrc	windows_11_version_21h2_for_x64-based_systems	—	—
msrc	windows_11_version_22h2_for_arm64-based_systems	—	—
msrc	windows_11_version_22h2_for_x64-based_systems	—	—
msrc	windows_server_2019	—	—

Detection & IOCs extracted from sources · hover to see the quote

• → Vulnerability is exploitable over the network targeting servers configured as domain controllers via LDAP; monitor for anomalous authenticated LDAP traffic directed at domain controllers ↗

• · Exploitation requires an authenticated attacker, meaning anonymous/unauthenticated LDAP access alone is not sufficient; focus monitoring on authenticated LDAP sessions to domain controllers ↗
• · As of advisory publication, the vulnerability has not been publicly disclosed or exploited in the wild; exploitation is rated 'Less Likely' for both latest and older software releases ↗

CVSS provenance

nvd v3.1 8.8 HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

vendor_msrc 8.8 HIGH

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