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Fencer Vulns
high 7.8

CVE-2023-46228 json

zchunk before 1.3.2 has multiple integer overflows via malformed zchunk files to lib/comp/comp.c, lib/comp/zstd/zstd.c, lib/dl/multipart.c,…

published 2023-10-19 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-50468

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 20%
public exploits
0
none known

Summary

zchunk before 1.3.2 has multiple integer overflows via malformed zchunk files to lib/comp/comp.c, lib/comp/zstd/zstd.c, lib/dl/multipart.c, or lib/header.c.

Patch / fix

  • zchunk zchunk 1.3.2
  • zchunk Debian 14, Debian 13 1.3.2+ds1-1

debian advisories DEBIAN-CVE-2023-46228

  • zchunk SLE Module for Package Hub 15 SP5, SLE Module for Basesystem 15 SP5, SLE Module for Basesystem 15 SP4 +8 more 1.1.16-150400.3.7.1
  • zchunk SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES 15 SP3-LTSS +7 more 1.1.5-150200.3.5.1

suse advisories SUSE-SU-2024:2432-1SUSE-SU-2023:4225-1SUSE-SU-2023:4224-1

  • zchunk CBL-Mariner 2.0 1.1.16-3

azure linux advisories AZL-31617

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-46228 updated

zchunk: integer overflow

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound

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.