CVE-2024-33601 | nscd: netgroup cache may terminate daemon on memory allocation failure

nscd: netgroup cache may terminate daemon on memory allocation failure The Name Service Cache Daemon's (nscd) netgroup cache uses xmalloc or xrealloc and these functions may terminate the process due to a memory allocation failure resulting in a denial of service to the clients. The flaw was introduced in glibc 2.15 when the cache was added to nscd. This vulnerability is only present in the nscd binary.

Published: 2024-05-06 Last update: 2026-06-17 Assigner: 3ff69d7a-14f2-4f67-a097-88dee7810d18 Source: 3ff69d7a-14f2-4f67-a097-88dee7810d18
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-33601 is rated Moderate Risk (51.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.07%). 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-2024-33601

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 2026-06-15 0.32% 1.07% +0.76%
2 2026-05-25 0.19% 0.32% +0.12%
3 2026-05-06 — 0.19% —

Full EPSS history (19 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-33601

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.3 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L 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:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 3.9 3.4 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2024-33601

GitHub Security Advisory for CVE-2024-33601

GHSA-f4cf-2w52-c853 · Severity: high — nscd: netgroup cache may terminate daemon on memory allocation failure The Name Service Cache...

OS Trackers for CVE-2024-33601

vendor priority summary link
debian not yet assigned CVE-2024-33601 not yet assigned priority: Debian including 1 source packages (glibc), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2024-33601
gentoo high CVE-2024-33601: 1 GLSA(s) (202405-17), 1 atom(s) (sys-libs/glibc); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2024-33601
redhat low — https://access.redhat.com/security/cve/CVE-2024-33601
suse medium CVE-2024-33601 severity moderate: SUSE including 924 source package names (1.21-14.1:glibc-2.31-150300.83.1, 1.5.4-1.11.1:glibc-2.31-150300.83.1, …), 2070 product×package rows across 288 product lines (Container bci/bci-base-fips, Container bci/bci-busybox, … (288 product lines)): Fixed 1831, Known Affected 200, Known Not Affected 39. https://www.suse.com/security/cve/CVE-2024-33601/
ubuntu medium CVE-2024-33601 medium priority: Ubuntu including 2 source packages (eglibc, glibc), 19 status rows across 11 suites (bionic, focal, jammy, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 7, released 6, needs-triage 3, not-affected 3. https://ubuntu.com/security/CVE-2024-33601

Affected software / configurations for CVE-2024-33601

Vendor Product Version Raw CPE
gnu glibc >= 2.15, < 2.40 cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*
debian debian_linux 10.0 cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
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:-:*:*:*:*:*:*:*
netapp h610c_firmware — cpe:2.3:o:netapp:h610c_firmware:-:*:*:*:*:*:*:*
netapp h615c_firmware — cpe:2.3:o:netapp:h615c_firmware:-:*:*:*:*:*:*:*
netapp h610s_firmware — cpe:2.3:o:netapp:h610s_firmware:-:*:*:*:*:*:*:*
netapp hci_bootstrap_os — cpe:2.3:o:netapp:hci_bootstrap_os:-:*:*:*:*:*:*:*

References for CVE-2024-33601

cvelogic Threat Intelligence