CVE-2023-2953

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

Published: 2023-05-30 Last update: 2025-01-10 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-2953 is rated Moderate Risk (58/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.42%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-2953

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-19 1.62% 1.42% -0.20%
2 2026-03-26 1.51% 1.62% +0.11%
3 2025-12-03 — 1.51% —

Full EPSS history (38 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-2953

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2023-2953

OS Trackers for CVE-2023-2953

vendor priority summary link
debian not yet assigned CVE-2023-2953 not yet assigned priority: Debian including 1 source packages (openldap), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 3, open 2. https://security-tracker.debian.org/tracker/CVE-2023-2953
redhat low — https://access.redhat.com/security/cve/CVE-2023-2953
suse medium CVE-2023-2953 severity moderate: SUSE including 422 source package names (0.23.0.3.2.452:libldap-2_4-2-2.4.46-150200.14.14.1, 0.23.0.3.2.452:libldap-data-2.4.46-150200.14.14.1, …), 1033 product×package rows across 281 product lines (Container bci/bci-init, Container bci/dotnet-aspnet, … (281 product lines)): Fixed 876, Known Affected 157. https://www.suse.com/security/cve/CVE-2023-2953/
ubuntu low CVE-2023-2953 low priority: Ubuntu including 1 source packages (openldap), 10 status rows across 10 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, trusty, upstream, xenial): released 6, ignored 2, not-affected 2. https://ubuntu.com/security/CVE-2023-2953

Affected software / configurations for CVE-2023-2953

Vendor Product Version Raw CPE
openldap openldap 2.4 cpe:2.3:a:openldap:openldap:2.4:*:*:*:*:*:*:*
redhat enterprise_linux 8.0 cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
redhat enterprise_linux 9.0 cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
apple macos >= 11.0, < 11.7.9 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple macos >= 12.0, < 12.6.8 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple macos >= 13.0, < 13.5 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
netapp active_iq_unified_manager — cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
netapp clustered_data_ontap — cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*
netapp ontap_tools — cpe:2.3:a:netapp:ontap_tools:-:*:*:*:*:vmware_vsphere:*:*
netapp h300s_firmware — cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
netapp h500s_firmware — cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
netapp h700s_firmware — cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
netapp h410s_firmware — cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
netapp h410c_firmware — cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*

References for CVE-2023-2953

cvelogic Threat Intelligence