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01 Record

CVE-2023-4504

OpenPrinting CUPS/libppd Postscript Parsing Heap Overflow

HighPUBLISHEDCNA: AHA
CNA base score7.0 CVSS v3.xCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

02 Description

OpenPrinting CUPS/libppd Postscript Parsing Heap Overflow

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.63% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 49.9% of scored records. A rank, not a probability.
NVD base score
7.0 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2023-09-21 22:47Z3 YR AGO
Last updated
2025-11-04 16:10Z11 MO AGO
Reserved
2023-08-23
Assigning CNA
AHA
Record state
PUBLISHED
Severity
High (CVSS 7.0)
CNA CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-122Heap-based Buffer OverflowVariant
  • CWE-787Out-of-bounds WriteBase
Data version
5.2
Document digest
9461e1c1f19dffe3e7eb1c9042033b8c17d4191af435ef6f5a66bcb6b4ce7be0

05 Affected products

VendorProductVersionsPlatforms
OpenPrintingCUPS0 to < 2.4.6—
OpenPrintinglibppd0 to < d09348b—

06 References

07 Fixed in

Debian 12

  • cups
    Fixed in 2.4.2-3+deb12u2

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • cups
    Fixed in 2.4.2-6

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • cups
    Fixed in 2.4.2-6

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • libppd
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • libppd
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • cups
    Fixed in 2.3.1-9ubuntu1.6
  • libppd
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • cups
    Fixed in 2.4.1op1-1ubuntu4.7
  • libppd
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • cups
    Fixed in 2.1.3-4ubuntu0.11+esm4
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • cups
    Fixed in 2.2.7-1ubuntu2.10+esm2
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.