fkie_cve-2024-35235
Vulnerability from fkie_nvd
Published
2024-06-11 15:16
Modified
2025-02-13 18:18
Severity ?
4.4 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Summary
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.8 and earlier, when starting the cupsd server with a Listen configuration item pointing to a symbolic link, the cupsd process can be caused to perform an arbitrary chmod of the provided argument, providing world-writable access to the target. Given that cupsd is often running as root, this can result in the change of permission of any user or system files to be world writable. Given the aforementioned Ubuntu AppArmor context, on such systems this vulnerability is limited to those files modifiable by the cupsd process. In that specific case it was found to be possible to turn the configuration of the Listen argument into full control over the cupsd.conf and cups-files.conf configuration files. By later setting the User and Group arguments in cups-files.conf, and printing with a printer configured by PPD with a `FoomaticRIPCommandLine` argument, arbitrary user and group (not root) command execution could be achieved, which can further be used on Ubuntu systems to achieve full root command execution. Commit ff1f8a623e090dee8a8aadf12a6a4b25efac143d contains a patch for the issue.
References
security-advisories@github.comhttp://www.openwall.com/lists/oss-security/2024/06/11/1
security-advisories@github.comhttp://www.openwall.com/lists/oss-security/2024/06/12/4
security-advisories@github.comhttp://www.openwall.com/lists/oss-security/2024/06/12/5
security-advisories@github.comhttps://git.launchpad.net/ubuntu/+source/apparmor/tree/profiles/apparmor.d/abstractions/user-tmp#n21
security-advisories@github.comhttps://github.com/OpenPrinting/cups/blob/aba917003c8de55e5bf85010f0ecf1f1ddd1408e/cups/http-addr.c#L229-L240
security-advisories@github.comhttps://github.com/OpenPrinting/cups/commit/ff1f8a623e090dee8a8aadf12a6a4b25efac143d
security-advisories@github.comhttps://github.com/OpenPrinting/cups/security/advisories/GHSA-vvwp-mv6j-hw6f
security-advisories@github.comhttps://lists.debian.org/debian-lts-announce/2024/06/msg00001.html
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/06/11/1
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/06/12/4
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/06/12/5
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/11/08/3
af854a3a-2127-422b-91ae-364da2661108https://git.launchpad.net/ubuntu/+source/apparmor/tree/profiles/apparmor.d/abstractions/user-tmp#n21
af854a3a-2127-422b-91ae-364da2661108https://github.com/OpenPrinting/cups/blob/aba917003c8de55e5bf85010f0ecf1f1ddd1408e/cups/http-addr.c#L229-L240
af854a3a-2127-422b-91ae-364da2661108https://github.com/OpenPrinting/cups/commit/ff1f8a623e090dee8a8aadf12a6a4b25efac143d
af854a3a-2127-422b-91ae-364da2661108https://github.com/OpenPrinting/cups/security/advisories/GHSA-vvwp-mv6j-hw6f
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00001.html
Impacted products
Vendor Product Version


To clipboard 

{
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.8 and earlier, when starting the cupsd server with a Listen configuration item pointing to a symbolic link, the cupsd process can be caused to perform an arbitrary chmod of the provided argument, providing world-writable access to the target. Given that cupsd is often running as root, this can result in the change of permission of any user or system files to be world writable. Given the aforementioned Ubuntu AppArmor context, on such systems this vulnerability is limited to those files modifiable by the cupsd process. In that specific case it was found to be possible to turn the configuration of the Listen argument into full control over the cupsd.conf and cups-files.conf configuration files. By later setting the User and Group arguments in cups-files.conf, and printing with a printer configured by PPD with a `FoomaticRIPCommandLine` argument, arbitrary user and group (not root) command execution could be achieved, which can further be used on Ubuntu systems to achieve full root command execution. Commit ff1f8a623e090dee8a8aadf12a6a4b25efac143d contains a patch for the issue.",
      },
      {
         lang: "es",
         value: "OpenPrinting CUPS es un sistema de impresión de código abierto para Linux y otros sistemas operativos similares a Unix. En las versiones 2.4.8 y anteriores, al iniciar el servidor cupsd con un elemento de configuración Listen que apunta a un enlace simbólico, se puede hacer que el proceso cupsd realice un chmod arbitrario del argumento proporcionado, proporcionando acceso de escritura mundial al destino. Dado que cupsd a menudo se ejecuta como root, esto puede resultar en el cambio de permiso de cualquier usuario o archivo del sistema para que se pueda escribir en todo el mundo. Dado el contexto de Ubuntu AppArmor antes mencionado, en dichos sistemas esta vulnerabilidad se limita a aquellos archivos modificables por el proceso cupsd. En ese caso específico, se descubrió que era posible convertir la configuración del argumento Listen en control total sobre los archivos de configuración cupsd.conf y cups-files.conf. Al configurar posteriormente los argumentos Usuario y Grupo en cups-files.conf e imprimir con una impresora configurada por PPD con un argumento `FoomaticRIPCommandLine`, se podría lograr la ejecución de comandos arbitrarios de usuarios y grupos (no root), que se pueden usar aún más en Sistemas Ubuntu para lograr la ejecución completa del comando root. El commit ff1f8a623e090dee8a8aadf12a6a4b25efac143d contiene un parche para el problema.",
      },
   ],
   id: "CVE-2024-35235",
   lastModified: "2025-02-13T18:18:05.597",
   metrics: {
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "LOW",
               attackVector: "LOCAL",
               availabilityImpact: "NONE",
               baseScore: 4.4,
               baseSeverity: "MEDIUM",
               confidentialityImpact: "HIGH",
               integrityImpact: "NONE",
               privilegesRequired: "HIGH",
               scope: "UNCHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N",
               version: "3.1",
            },
            exploitabilityScore: 0.8,
            impactScore: 3.6,
            source: "security-advisories@github.com",
            type: "Secondary",
         },
      ],
   },
   published: "2024-06-11T15:16:07.473",
   references: [
      {
         source: "security-advisories@github.com",
         url: "http://www.openwall.com/lists/oss-security/2024/06/11/1",
      },
      {
         source: "security-advisories@github.com",
         url: "http://www.openwall.com/lists/oss-security/2024/06/12/4",
      },
      {
         source: "security-advisories@github.com",
         url: "http://www.openwall.com/lists/oss-security/2024/06/12/5",
      },
      {
         source: "security-advisories@github.com",
         url: "https://git.launchpad.net/ubuntu/+source/apparmor/tree/profiles/apparmor.d/abstractions/user-tmp#n21",
      },
      {
         source: "security-advisories@github.com",
         url: "https://github.com/OpenPrinting/cups/blob/aba917003c8de55e5bf85010f0ecf1f1ddd1408e/cups/http-addr.c#L229-L240",
      },
      {
         source: "security-advisories@github.com",
         url: "https://github.com/OpenPrinting/cups/commit/ff1f8a623e090dee8a8aadf12a6a4b25efac143d",
      },
      {
         source: "security-advisories@github.com",
         url: "https://github.com/OpenPrinting/cups/security/advisories/GHSA-vvwp-mv6j-hw6f",
      },
      {
         source: "security-advisories@github.com",
         url: "https://lists.debian.org/debian-lts-announce/2024/06/msg00001.html",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "http://www.openwall.com/lists/oss-security/2024/06/11/1",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "http://www.openwall.com/lists/oss-security/2024/06/12/4",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "http://www.openwall.com/lists/oss-security/2024/06/12/5",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "http://www.openwall.com/lists/oss-security/2024/11/08/3",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://git.launchpad.net/ubuntu/+source/apparmor/tree/profiles/apparmor.d/abstractions/user-tmp#n21",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://github.com/OpenPrinting/cups/blob/aba917003c8de55e5bf85010f0ecf1f1ddd1408e/cups/http-addr.c#L229-L240",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://github.com/OpenPrinting/cups/commit/ff1f8a623e090dee8a8aadf12a6a4b25efac143d",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://github.com/OpenPrinting/cups/security/advisories/GHSA-vvwp-mv6j-hw6f",
      },
      {
         source: "af854a3a-2127-422b-91ae-364da2661108",
         url: "https://lists.debian.org/debian-lts-announce/2024/06/msg00001.html",
      },
   ],
   sourceIdentifier: "security-advisories@github.com",
   vulnStatus: "Awaiting Analysis",
   weaknesses: [
      {
         description: [
            {
               lang: "en",
               value: "CWE-59",
            },
            {
               lang: "en",
               value: "CWE-252",
            },
         ],
         source: "security-advisories@github.com",
         type: "Secondary",
      },
   ],
}


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