CVE-2023-34241: CUPS vulnerable to use-after-free in cupsdAcceptClient()

Published Jun 14, 2023
·
Updated

Accounts. A privacy issue was addressed with improved private data redaction for log entries.

Other sources

AMD. A race condition was addressed with improved state handling.

— Apple

Apple CUPS is vulnerable to a denial of service, caused by a use-after-free in cupsdAcceptClient(). By reading the log, a local attacker could exploit this vulnerability to exfiltrate private keys and info from a privileged cups daemon or cause the application to crash.

— IBM

Apple Neural Engine. The issue was addressed with improved memory handling.

— Apple

AppleMobileFileIntegrity. A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions.

— Apple

AppSandbox. A logic issue was addressed with improved restrictions.

— Apple

Credit

Sei K., pattern-f@@pattern_F_(Ant Security Light), Mohamed GHANNAM@@_simo36, Mickey Jin@@patch1t, Gergely Kalman@@gergely_kalman, Wojciech Regula(SecuRing), Erhad Husovic, CVE-2023-28319, CVE-2023-28320, CVE-2023-28321, CVE-2023-28322, Kirin@@Pwnrin(SecuRing), (SecuRing), Bool(YunShangHuaAn), found by OSS-Fuzz, Arsenii Kostromin (0x3c3e), Zweig(Kunlun Lab), 香农的三蹦子(Pangu Lab), an anonymous researcher, Pan ZhenPeng@@Peterpan0927(STAR Labs SG Pte), Peter Nguyễn Vũ Hoàng@@peternguyen14(STAR Labs SG Pte), Certik Skyfall Team, Kaitao Xie(Alibaba Group), Xiaolong Bai(Alibaba Group), Valentin Pashkov(Kaspersky), Mikhail Vinogradov(Kaspersky), Georgy Kucherin@@kucher1n(Kaspersky), Leonid Bezvershenko@@bzvr_(Kaspersky), (Kaspersky), Boris Larin@@oct0xor(Kaspersky), Zhipeng Huo@@R3dF09(Tencent Security Xuanwu Lab), Noah Roskin-Frazee, Taavi Eomäe(Zone Media O), Mickey Jin@@patch1t(Trend Micro Zero Day Initiative), (Trend Micro Zero Day Initiative), Michael DePlante@@izobashi(Trend Micro Zero Day Initiative), CVE-2023-1916, Jonathan Bar Or(Microsoft), Emanuele Cozzi(Microsoft), (Microsoft), Michael Pearse(Microsoft), Csaba Fitzl@@theevilbit(Offensive Security), Sandipan Roy, James Duffy (mangoSecure), Michael Cowell, David Hoyt(Hoyt LLC), Wenchao Li(Hangzhou Orange Shield Information Technology Co), Xiaolong Bai(Hangzhou Orange Shield Information Technology Co), Ltd., CVE-2023-1801, Matthew Loewen, CVE-2023-2426, CVE-2023-2609, CVE-2023-2610, Yiğit Can YILMAZ@@yilmazcanyigit, Pr, Kirin@@Pwnrin, Yishu Wang, Adam M., Johan Carlsson (joaxcar), Narendra Bhati (twitter.com/imnarendrabhati)(Suma Soft Pvt), Pune - India, Hritvik Taneja, Jason Kim, Jie Jeff Xu, Stephan van Schaik, Daniel Genkin, Yuval Yarom, Pune - India(TU Wien), Valentino Dalla Valle(TU Wien), Pedro Bernardo(TU Wien), Marco Squarcina(TU Wien), (TU Wien), Lorenzo Veronese(TU Wien), Yuhao Hu, Jiming Wang, Jikai Ren, Anonymous(Trend Micro Zero Day Initiative), Francisco Alonso@@revskills, Junsung Lee, Apple, 이준성(Junsung Lee)(Cross Republic), YeongHyeon Choi@@hyeon101010, ABC Research s.r.o.

Affected Software

19 affected componentsFixes available
ubuntu/cups<2.2.7-1ubuntu2.10+
2.2.7-1ubuntu2.10+
ubuntu/cups<2.1.3-4ubuntu0.11+
2.1.3-4ubuntu0.11+
ubuntu/cups<2.3.1-9ubuntu1.4
2.3.1-9ubuntu1.4
ubuntu/cups<2.4.1
2.4.1
ubuntu/cups<2.4.2-1ubuntu2.2
2.4.2-1ubuntu2.2
ubuntu/cups<2.4.2-3ubuntu2.2
2.4.2-3ubuntu2.2
debian/cups<=2.2.10-6+deb10u6, <=2.3.3op2-3+deb11u2
2.2.10-6+deb10u92.3.3op2-3+deb11u62.4.2-3+deb12u52.4.7-1
Apple macOS Big Sur<11.7.9
11.7.9
Apple macOS Monterey<12.6.8
12.6.8
Apple macOS Ventura<13.5
13.5
IBM QRadar SIEM<=7.5 - 7.5.0 UP8 IF01
OpenPrinting CUPS>=2.2.0<2.4.6
Fedoraproject Fedora=38
Fedoraproject Fedora=37
Debian Debian Linux=10.0
Apple macOS<11.7.9
Apple macOS>=12.0.0<12.6.8
Apple macOS>=13.0<13.5
F5 Traffix SDC=5.2
5.2

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/cups to a version that resolves this vulnerability.

    Fixed in 2.2.7-1ubuntu2.10+
  2. Upgrade

    Upgrade ubuntu/cups to a version that resolves this vulnerability.

    Fixed in 2.1.3-4ubuntu0.11+
  3. Upgrade

    Upgrade ubuntu/cups to a version that resolves this vulnerability.

    Fixed in 2.3.1-9ubuntu1.4
  4. Upgrade

    Upgrade ubuntu/cups to a version that resolves this vulnerability.

    Fixed in 2.4.1
  5. Upgrade

    Upgrade ubuntu/cups to a version that resolves this vulnerability.

    Fixed in 2.4.2-1ubuntu2.2
  6. Upgrade

    Upgrade ubuntu/cups to a version that resolves this vulnerability.

    Fixed in 2.4.2-3ubuntu2.2
  7. Upgrade

    Upgrade debian/cups to a version that resolves this vulnerability.

    Fixed in 2.2.10-6+deb10u9Fixed in 2.3.3op2-3+deb11u6Fixed in 2.4.2-3+deb12u5Fixed in 2.4.7-1
  8. Upgrade

    Upgrade Apple macOS to a version that resolves this vulnerability.

    Fixed in 11.7.9
  9. Upgrade

    Upgrade macOS to a version that resolves this vulnerability.

    Fixed in 12.6.8
  10. Upgrade

    Upgrade macOS Ventura to a version that resolves this vulnerability.

    Fixed in 13.5
  11. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 13.5
  12. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 5.2
  13. Upgrade

    Upgrade OpenPrinting CUPS to a version that resolves this vulnerability.

    Fixed in 2.4.6
  14. Configuration

    In cupsd.conf, avoid the scenario where HostNameLookups Double is set and the IP Address double-lookup fails (the described use-after-free occurs when LogLevel is warn or higher and HostNameLookups Double is set).

    OpenPrinting CUPS HostNameLookups Double (cupsd.conf) = unset/disable (set to not Double)
  15. Configuration

    If CUPS is compiled with TCP wrappers, adjust /etc/hosts.allow and /etc/hosts.deny so connections are not refused by these rules (the described use-after-free occurs when LogLevel is warn or higher and the connection is refused by TCP wrapper rules).

    OpenPrinting CUPS (TCP wrappers) /etc/hosts.allow and /etc/hosts.deny rules (connection refused) = permit the connections instead of refusing them via rules
  16. Configuration

    Set LogLevel to a value lower than warn (the described use-after-free in cupsdAcceptClient happens when LogLevel is warn or higher).

    OpenPrinting CUPS LogLevel = below warn

Event History

Jun 14, 2023
Data Sourced
via Red Hat·04:51 AM
DescriptionSeverityAffected Software
Jun 22, 2023
CVE Published
via Ubuntu·12:00 AM
CVE Published
via MITRE·10:39 PM
Data Sourced
via MITRE·10:39 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·11:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
Jul 24, 2023
Data Sourced
via Apple·12:00 AM
DescriptionWeaknessAffected Software
Updated
via Apple·12:00 AM
DescriptionWeakness
Jan 12, 2024
Data Sourced
via Launchpad·12:21 AM
Description
Nov 13, 2025
Advisory Published
via F5·04:54 PM
Data Sourced
via F5·04:54 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is CVE-2023-34241?

CVE-2023-34241 is a logic issue in OpenPrinting CUPS that has been addressed with improved state management.

2

What is the severity of CVE-2023-34241?

The severity of CVE-2023-34241 is high with a CVSS Score of 7.1.

3

How does CVE-2023-34241 affect OpenPrinting CUPS?

CVE-2023-34241 affects OpenPrinting CUPS versions earlier than 2.4.6.

4

How can I fix CVE-2023-34241 in OpenPrinting CUPS?

To fix CVE-2023-34241 in OpenPrinting CUPS, update to version 2.4.6 or later.

5

Are there any official references for CVE-2023-34241?

Yes, you can find official references for CVE-2023-34241 at the following links: - [GitHub Commit](https://github.com/OpenPrinting/cups/commit/9809947a959e18409dcf562a3466ef246cb90cb2) - [GitHub Release](https://github.com/OpenPrinting/cups/releases/tag/v2.4.6) - [OpenPrinting CUPS Security Advisory](https://github.com/OpenPrinting/cups/security/advisories/GHSA-qjgh-5hcq-5f25)

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