CVE-2024-3203 json
c-blosc2 ndlz8x8.c ndlz8_decompress heap-based overflow
published 2024-04-02 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-31795
- cvss
- 7.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.4%
- EPSS 1.4% chance of exploitation in 30 days, percentile 71%
- public exploits
- 0
- none known
Summary
A vulnerability, which was classified as critical, was found in c-blosc2 up to 2.13.2. Affected is the function ndlz8_decompress of the file /src/c-blosc2/plugins/codecs/ndlz/ndlz8x8.c. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack 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. VDB-259050 is the identifier assigned to this vulnerability.
Patch / fix
- c-blosc2 Debian 14, Debian 13 2.13.1+ds-3
debian advisories DEBIAN-CVE-2024-3203
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
1.36% chance of exploitation in the next 30 days, higher than 71% 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.304556 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
Classification
- Weakness
-
- CWE-122 Heap-based Buffer Overflow
References
-
github.com
/Blosc/c-blosc2/releases/tag/v2.14.3
patch, release-notes
-
drive.google.com
/drive/folders/1T1k3UeS09m65LjVXExUuZfedNQPWQWCo?usp=sharing
exploit, product
-
vuldb.com
/?submit.304556
third-party-advisory, exploit, vdb-entry
-
vuldb.com
/?id.259050
vdb-entry, technical-description, third-party-advisory
-
vuldb.com
/?ctiid.259050
signature, permissions-required, vdb-entry
Sources
- CVE List CVE-2024-3203
- NVD CVE-2024-3203
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.