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Fencer Vulns
high 7.3

CVE-2024-3204 json

c-blosc2 ndlz4x4.c ndlz4_decompress heap-based overflow

published 2024-04-02 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-31796

cvss
7.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.3%
EPSS 1.3% chance of exploitation in 30 days, percentile 70%
public exploits
0
none known

Summary

A vulnerability has been found in c-blosc2 up to 2.13.2 and classified as critical. Affected by this vulnerability is the function ndlz4_decompress of the file /src/c-blosc2/plugins/codecs/ndlz/ndlz4x4.c. The manipulation leads to heap-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 2.14.3 is able to address this issue. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-259051.

Patch / fix

  • c-blosc2 Debian 14, Debian 13 2.13.1+ds-3

debian advisories DEBIAN-CVE-2024-3204

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

1.27% chance of exploitation in the next 30 days, higher than 70% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • drive.google.com https://drive.google.com/drive/folders/1T1k3UeS09m65LjVXExUuZfedNQPWQWCo?usp=sharing referenced PoC, tagged "exploit" by a source, unverified
  • vuldb.com https://vuldb.com/?submit.304557 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CNA 3.0 7.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CNA 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • n/a c-blosc2
  • c-blosc2_project c-blosc2

Classification

Weakness
  • CWE-122 Heap-based Buffer Overflow

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.