Multiple vulnerabilities in Microsoft Windows Lightweight Directory Access Protocol (LDAP)



| Updated: 2025-01-10
Risk High
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2024-49121
CVE-2024-49127
CVE-2024-49112
CVE-2024-49113
CWE-ID CWE-476
CWE-416
CWE-190
CWE-125
Exploitation vector Network
Public exploit Public exploit code for vulnerability #3 is available.
Public exploit code for vulnerability #4 is available.
Vulnerable software
 Windows
Operating systems & Components / Operating system

Windows Server
Operating systems & Components / Operating system

Vendor Microsoft

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) NULL pointer dereference

EUVDB-ID: #VU101412

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-49121

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in Windows Lightweight Directory Access Protocol (LDAP). A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: before 10 21H2 10.0.19044.5247, 10 22H2 10.0.19045.5247, 10 1507 10.0.10240.20857, 10 1607 10.0.14393.7606, 10 1809 10.0.17763.6659, 11 22H2 10.0.22621.4602, 11 23H2 10.0.22631.4602, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247

Windows Server: before 2008 R2 6.1.7601.27467, 2008 6.0.6003.23016, 2012 R2 6.3.9600.22318, 2012 6.2.9200.25222, 2016 10.0.14393.7606, 2022 10.0.20348.2908, 2022 10.0.20348.2966, 2022 23H2 10.0.25398.1308, 2025 10.0.26100.2528, 2025 10.0.26100.2605, 2008 R2 6.1.7601.27467, 2008 R2 6.1.7601.27467, 2008 R2 6.1.7601.27467, 2008 R2 6.1.7601.27467

CPE2.3 External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2024-49121


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Use-after-free

EUVDB-ID: #VU101415

Risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2024-49127

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in Windows Lightweight Directory Access Protocol (LDAP). A remote attacker can win a race condition and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: before 10 21H2 10.0.19044.5247, 10 22H2 10.0.19045.5247, 10 1507 10.0.10240.20857, 10 1607 10.0.14393.7606, 10 1809 10.0.17763.6659, 11 22H2 10.0.22621.4602, 11 23H2 10.0.22631.4602, 11 24H2 10.0.26100.2528, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247

Windows Server: before 2008 R2 6.1.7601.27467, 2008 6.0.6003.23016, 2012 R2 6.3.9600.22318, 2012 6.2.9200.25222, 2016 10.0.14393.7606, 2022 10.0.20348.2908, 2022 10.0.20348.2966, 2022 23H2 10.0.25398.1308, 2025 10.0.26100.2528, 2025 10.0.26100.2605, 2008 R2 6.1.7601.27467, 2008 R2 6.1.7601.27467, 2008 R2 6.1.7601.27467, 2008 R2 6.1.7601.27467

CPE2.3
External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2024-49127


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Integer overflow

EUVDB-ID: #VU101414

Risk: High

CVSSv4.0: 8.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2024-49112

CWE-ID: CWE-190 - Integer overflow

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in Windows Lightweight Directory Access Protocol (LDAP). A remote attacker can use a specially crafted set of LDAP calls, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: before 10 21H2 10.0.19044.5247, 10 22H2 10.0.19045.5247, 10 1507 10.0.10240.20857, 10 1607 10.0.14393.7606, 10 1809 10.0.17763.6659, 11 22H2 10.0.22621.4602, 11 23H2 10.0.22631.4602, 11 24H2 10.0.26100.2528, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247

Windows Server: before 2008 R2 6.1.7601.27467, 2008 6.0.6003.23016, 2012 R2 6.3.9600.22318, 2012 6.2.9200.25222, 2016 10.0.14393.7606, 2022 10.0.20348.2908, 2022 10.0.20348.2966, 2022 23H2 10.0.25398.1308, 2025 10.0.26100.2528, 2025 10.0.26100.2605, 2008 R2 6.1.7601.27467, 2008 R2 6.1.7601.27467, 2008 R2 6.1.7601.27467, 2008 R2 6.1.7601.27467

CPE2.3
External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2024-49112


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

4) Out-of-bounds read

EUVDB-ID: #VU101413

Risk: Medium

CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2024-49113

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in Windows Lightweight Directory Access Protocol (LDAP). A remote attacker can trigger an out-of-bounds read error and cause a denial of service condition on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: before 10 21H2 10.0.19044.5247, 10 22H2 10.0.19045.5247, 10 1507 10.0.10240.20857, 10 1607 10.0.14393.7606, 10 1809 10.0.17763.6659, 11 22H2 10.0.22621.4602, 11 23H2 10.0.22631.4602, 11 24H2 10.0.26100.2528, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247, 10 21H2 10.0.19044.5247

Windows Server: before 2008 R2 6.1.7601.27467, 2008 6.0.6003.23016, 2012 R2 6.3.9600.22318, 2012 6.2.9200.25222, 2016 10.0.14393.7606, 2022 10.0.20348.2908, 2022 10.0.20348.2966, 2022 23H2 10.0.25398.1308, 2025 10.0.26100.2528, 2025 10.0.26100.2605, 2008 R2 6.1.7601.27467, 2008 R2 6.1.7601.27467, 2008 R2 6.1.7601.27467, 2008 R2 6.1.7601.27467

CPE2.3
External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2024-49113


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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