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Fencer Vulns
high 7.5

CVE-2023-32324 json

OpenPrinting CUPS vulnerable to heap buffer overflow

published 2023-06-01 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-36569

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 73%
public exploits
0
none known

Summary

OpenPrinting CUPS is an open source printing system. In versions 2.4.2 and prior, a heap buffer overflow vulnerability would allow a remote attacker to launch a denial of service (DoS) attack. A buffer overflow vulnerability in the function `format_log_line` could allow remote attackers to cause a DoS on the affected system. Exploitation of the vulnerability can be triggered when the configuration file `cupsd.conf` sets the value of `loglevel `to `DEBUG`. No known patches or workarounds exist at time of publication.

Patch / fix

  • cups Debian 12 2.4.2-3+deb12u1
  • cups Debian 14, Debian 13 2.4.2-4

debian advisories DEBIAN-CVE-2023-32324

  • cups Ubuntu 18.04 LTS 2.2.7-1ubuntu2.10
  • cups Ubuntu 20.04 LTS 2.3.1-9ubuntu1.3
  • cups Ubuntu 22.04 LTS 2.4.1op1-1ubuntu4.2
  • cups Ubuntu Pro 16.04 LTS 2.1.3-4ubuntu0.11+esm2

ubuntu advisories UBUNTU-CVE-2023-32324

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • cups RHEL 8 1:2.2.6-54.el8_9
  • cups-lpd RHEL 8 1:2.2.6-54.el8_9
  • cups-libs RHEL 8 1:2.2.6-54.el8_9
  • cups-client RHEL 8 1:2.2.6-54.el8_9
  • cups-ipptool RHEL 8 1:2.2.6-54.el8_9
  • cups-filesystem RHEL 8 1:2.2.6-54.el8_9
  • cups RHEL 9 1:2.3.3op2-21.el9
  • cups-lpd RHEL 9 1:2.3.3op2-21.el9

red hat advisories RHSA-2024:1409RHSA-2024:1101RHSA-2023:7165RHSA-2023:6596

  • cups Linux Micro 6.0 2.4.11-1.1
  • cups SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES for SAP 15 SP1 +23 more 2.2.7-150000.3.43.1
  • cups SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES 12 SP5 +6 more 1.7.5-20.39.1

suse advisories SUSE-SU-2025:20090-1SUSE-SU-2023:2347-1SUSE-SU-2023:2346-1

  • cups openSUSE Tumbleweed 2.4.2-5.1

opensuse advisories openSUSE-SU-2024:12975-1

  • cups AlmaLinux 8 1:2.2.6-54.el8_9
  • cups-lpd AlmaLinux 8 1:2.2.6-54.el8_9
  • cups-libs AlmaLinux 8 1:2.2.6-54.el8_9
  • cups-client AlmaLinux 8 1:2.2.6-54.el8_9
  • cups-ipptool AlmaLinux 8 1:2.2.6-54.el8_9
  • cups-filesystem AlmaLinux 8 1:2.2.6-54.el8_9
  • cups AlmaLinux 9 1:2.3.3op2-21.el9
  • cups-lpd AlmaLinux 9 1:2.3.3op2-21.el9

almalinux advisories ALSA-2023:7165ALSA-2023:6596

  • cups Alpine 3.15 2.3.3-r7
  • cups Alpine 3.16 2.4.2-r1
  • cups Alpine 3.17 2.4.2-r2
  • cups Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 2.4.2-r7

alpine advisories ALPINE-CVE-2023-32324

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • cups CBL-Mariner 2.0 2.3.3op2-7
  • cups Azure Linux 3.0 2.4.10-1

azure linux advisories AZL-37073AZL-37098

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-2023-32324 updated cvss 5.9

cups: heap buffer overflow may lead to DoS

  • Red Hat Enterprise Linux 6 cups, cups-lpd, cups-php, cups-libs
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 cups, cups-lpd, cups-libs, cups-client, cups-ipptool, cups-filesystem
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux AppStream (v. 8) cups 2.2.6-54.el8_9, cups-lpd 2.2.6-54.el8_9, cups-client 2.2.6-54.el8_9, cups-ipptool 2.2.6-54.el8_9, cups-filesystem 2.2.6-54.el8_9
    fixed: vendor fix RHSA-2023:7165
  • Red Hat Enterprise Linux AppStream (v. 9) cups 2.3.3op2-21.el9, cups-lpd 2.3.3op2-21.el9, cups-client 2.3.3op2-21.el9, cups-ipptool 2.3.3op2-21.el9, cups-filesystem 2.3.3op2-21.el9, cups-printerapp 2.3.3op2-21.el9
    fixed: vendor fix RHSA-2023:6596
  • Red Hat Enterprise Linux AppStream EUS (v.8.6) cups 2.2.6-45.el8_6.4, cups-lpd 2.2.6-45.el8_6.4, cups-client 2.2.6-45.el8_6.4, cups-ipptool 2.2.6-45.el8_6.4, cups-filesystem 2.2.6-45.el8_6.4
    fixed: vendor fix RHSA-2024:1101
  • Red Hat Enterprise Linux AppStream EUS (v.8.8) cups 2.2.6-51.el8_8.3, cups-lpd 2.2.6-51.el8_8.3, cups-client 2.2.6-51.el8_8.3, cups-ipptool 2.2.6-51.el8_8.3, cups-filesystem 2.2.6-51.el8_8.3
    fixed: vendor fix RHSA-2024:1409
  • Red Hat Enterprise Linux BaseOS (v. 8) cups 2.2.6-54.el8_9, cups-libs 2.2.6-54.el8_9
    fixed: vendor fix RHSA-2023:7165
  • Red Hat Enterprise Linux BaseOS (v. 9) cups 2.3.3op2-21.el9, cups-libs 2.3.3op2-21.el9
    fixed: vendor fix RHSA-2023:6596
show 2 more
  • Red Hat Enterprise Linux BaseOS EUS (v.8.6) cups 2.2.6-45.el8_6.4, cups-libs 2.2.6-45.el8_6.4
    fixed: vendor fix RHSA-2024:1101
  • Red Hat Enterprise Linux BaseOS EUS (v.8.8) cups 2.2.6-51.el8_8.3, cups-libs 2.2.6-51.el8_8.3
    fixed: vendor fix RHSA-2024:1409

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
yes
Technical impact
partial
Assessed
22 mo ago

Exploit prediction

1.46% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/OpenPrinting/cups/security/advisories/GHSA-cxc6-w2g7-69p7 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

  • OpenPrinting cups

Classification

Weakness

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.