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CVE-2023-2953

21
FAUCET Score

CVE-2023-2953 is a null pointer dereference vulnerability in the ber_memalloc_x() function of OpenLDAP, affecting products from Apple, NetApp, OpenLDAP, and Red Hat. With a CVSS score of 7.5 (HIGH), this flaw can be exploited remotely with low attack complexity, leading to a denial of service. There is currently no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
2.4CPE matchmatch criteria
cpe:2.3:a:openldap:openldap:2.4:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
>= 11.0, < 11.7.9CPE matchmatch criteria
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
>= 12.0, < 12.6.8CPE matchmatch criteria
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.95%
Probability of exploitation in next 30 days
EPSS Percentile
78.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0195 is in the 62nd percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (10)

denopatch availablevia llm_extracted
View patch
keraspatch availablevia llm_extracted
View patch
mediatekpatch availablevia llm_extracted
Fixed in: 9.3.1, 9.2.3, 9.1.6
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 2.4.57-9
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 2.4.57-9
microsoftpatch availablevia msrc
Product: cbl2 openldap 2.4.57-9 on CBL Mariner 2.0Fixed in: 2.4.57-9
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsFixed in: openldap-0:2.6.2-1.el9_0.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.8 Extended Update SupportFixed in: openldap-0:2.4.46-20.el8_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: openldap-0:2.4.46-19.el8_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.2 Extended Update SupportFixed in: openldap-0:2.6.2-3.el9_2.1
View patch

Vendor Advisories (6)

mediatekllm-mediatek-5bd731d14163992dHIGH

Third-Party Package Updates in Splunk Enterprise - October 2024

Oct 14, 2024
microsoft2024-Sep/CVE-2023-2953

CVE-2023-2953

Sep 10, 2024
denollm-deno-b67a3af2ce0be075CRITICAL

HP ThinPro 8.0 SP 9 Security Updates

Jun 17, 2024
kerasllm-keras-7d8c31fee70361dcCRITICAL

HP ThinPro 8.0 SP 9 Security Updates

Jun 17, 2024
redhatCVE-2023-2953Low

openldap: null pointer dereference in ber_memalloc_x function

May 29, 2023
microsoft2023-May/CVE-2023-2953Important

A vulnerability was found in openldap. This security flaw causes a null pointer dereference in ber_memalloc_x() function.

May 9, 2023

References

access.redhat.com / security/cve/CVE-2023-2953
Third Party Advisory
bugs.openldap.org / show_bug.cgi
Issue TrackingVendor Advisory
seclists.org / fulldisclosure/2023/Jul/47
Mailing List
seclists.org / fulldisclosure/2023/Jul/48
Mailing List
seclists.org / fulldisclosure/2023/Jul/52
Mailing List
security.netapp.com / advisory/ntap-20230703-0005
Third Party Advisory
support.apple.com / kb/HT213843
Third Party Advisory
support.apple.com / kb/HT213844
Third Party Advisory
support.apple.com / kb/HT213845
Third Party Advisory