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CVE-2023-34241

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

Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.

OpenPrinting CUPS is a standards-based, open source printing system for Linux and other Unix-like operating systems. Starting in version 2.0.0 and prior to version 2.4.6, CUPS logs data of free memory to the logging service AFTER the connection has been closed, when it should have logged the data right before. This is a use-after-free bug that impacts the entire cupsd process. The exact cause of this issue is the function `httpClose(con->http)` being called in `scheduler/client.c`. The problem is that httpClose always, provided its argument is not null, frees the pointer at the end of the call, only for cupsdLogClient to pass the pointer to httpGetHostname. This issue happens in function `cupsdAcceptClient` if LogLevel is warn or higher and in two scenarios: there is a double-lookup for the IP Address (HostNameLookups Double is set in `cupsd.conf`) which fails to resolve, or if CUPS is compiled with TCP wrappers and the connection is refused by rules from `/etc/hosts.allow` and `/etc/hosts.deny`. Version 2.4.6 has a patch for this issue.

CVSS 5.3 · Media · EPSS 1,4% · Corrección disponible

Publicación
Actualización

Pila tecnológica: system

Productos y versiones afectados

  • cups

    Versiones
    • >= 2.0.0, < 2.4.6: Afectada

    Sin corrección publicada

  • cups Debian:12

    Versiones
    • 2.4.2-3
    Intervalos de versiones afectados
    • ECOSYSTEM: < 2.4.2-3+deb12u1

    Actualiza a 2.4.2-3+deb12u1

  • cups Debian:13

    Intervalos de versiones afectados
    • ECOSYSTEM: < 2.4.2-5

    Actualiza a 2.4.2-5

  • cups Debian:14

    Intervalos de versiones afectados
    • ECOSYSTEM: < 2.4.2-5

    Actualiza a 2.4.2-5

  • cups Ubuntu:Pro:16.04:LTS

    Versiones
    • 2.1.0-4ubuntu3
    • 2.1.0-5
    • 2.1.0-6
    • 2.1.0-6ubuntu1
    • 2.1.0-7
    • 2.1.2-1
    • 2.1.2-2
    • 2.1.3-1
    • 2.1.3-1build1
    • 2.1.3-3
    • 2.1.3-4
    • 2.1.3-4ubuntu0.2
    • 2.1.3-4ubuntu0.3
    • 2.1.3-4ubuntu0.4
    • 2.1.3-4ubuntu0.5
    • 2.1.3-4ubuntu0.6
    • 2.1.3-4ubuntu0.7
    • 2.1.3-4ubuntu0.8
    • 2.1.3-4ubuntu0.9
    • 2.1.3-4ubuntu0.10
    • 2.1.3-4ubuntu0.11
    • 2.1.3-4ubuntu0.11+esm1
    • 2.1.3-4ubuntu0.11+esm2
    Intervalos de versiones afectados
    • ECOSYSTEM: < 2.1.3-4ubuntu0.11+esm3

    Actualiza a 2.1.3-4ubuntu0.11+esm3

  • cups Ubuntu:Pro:18.04:LTS

    Versiones
    • 2.2.4-7ubuntu2
    • 2.2.5-2
    • 2.2.6-2
    • 2.2.6-3
    • 2.2.6-4
    • 2.2.6-5
    • 2.2.7-1ubuntu1
    • 2.2.7-1ubuntu2
    • 2.2.7-1ubuntu2.1
    • 2.2.7-1ubuntu2.2
    • 2.2.7-1ubuntu2.3
    • 2.2.7-1ubuntu2.4
    • 2.2.7-1ubuntu2.5
    • 2.2.7-1ubuntu2.6
    • 2.2.7-1ubuntu2.7
    • 2.2.7-1ubuntu2.8
    • 2.2.7-1ubuntu2.9
    • 2.2.7-1ubuntu2.10
    Intervalos de versiones afectados
    • ECOSYSTEM: < 2.2.7-1ubuntu2.10+esm1

    Actualiza a 2.2.7-1ubuntu2.10+esm1

  • cups Ubuntu:20.04:LTS

    Versiones
    • 2.2.12-2ubuntu1
    • 2.3.0-6
    • 2.3.0-7
    • 2.3.0-7ubuntu1
    • 2.3.1-1ubuntu1
    • 2.3.1-2
    • 2.3.1-4
    • 2.3.1-7
    • 2.3.1-9ubuntu1
    • 2.3.1-9ubuntu1.1
    • 2.3.1-9ubuntu1.2
    • 2.3.1-9ubuntu1.3
    Intervalos de versiones afectados
    • ECOSYSTEM: < 2.3.1-9ubuntu1.4

    Actualiza a 2.3.1-9ubuntu1.4

  • cups Ubuntu:22.04:LTS

    Versiones
    • 2.3.3op2-7ubuntu2
    • 2.4.1op1-1ubuntu1
    • 2.4.1op1-1ubuntu2
    • 2.4.1op1-1ubuntu3
    • 2.4.1op1-1ubuntu4
    • 2.4.1op1-1ubuntu4.1
    • 2.4.1op1-1ubuntu4.2
    Intervalos de versiones afectados
    • ECOSYSTEM: < 2.4.1op1-1ubuntu4.4

    Actualiza a 2.4.1op1-1ubuntu4.4

Fuentes originales

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