CVE-2024-35235

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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. 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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. 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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 impresi\u00f3n de c\u00f3digo 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 configuraci\u00f3n Listen que apunta a un enlace simb\u00f3lico, 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 espec\u00edfico, se descubri\u00f3 que era posible convertir la configuraci\u00f3n del argumento Listen en control total sobre los archivos de configuraci\u00f3n 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 podr\u00eda lograr la ejecuci\u00f3n de comandos arbitrarios de usuarios y grupos (no root), que se pueden usar a\u00fan m\u00e1s en Sistemas Ubuntu para lograr la ejecuci\u00f3n completa del comando root. El commit ff1f8a623e090dee8a8aadf12a6a4b25efac143d contiene un parche para el problema."}], "id": "CVE-2024-35235", "lastModified": "2026-06-17T07:34:35.737", "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"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.7, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 0.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2024-35235", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-06-11T17:02:39.998197Z", "version": "2.0.3"}}]}, "published": "2024-06-11T15:16:07.473", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2024/06/11/1"}, {"source": "security-advisories@github.com", "tags": ["Mailing List"], "url": "http://www.openwall.com/lists/oss-security/2024/06/12/4"}, {"source": "security-advisories@github.com", "tags": ["Mailing List"], "url": "http://www.openwall.com/lists/oss-security/2024/06/12/5"}, {"source": "security-advisories@github.com", "tags": ["Product"], "url": "https://git.launchpad.net/ubuntu/+source/apparmor/tree/profiles/apparmor.d/abstractions/user-tmp#n21"}, {"source": "security-advisories@github.com", "tags": ["Product"], "url": "https://github.com/OpenPrinting/cups/blob/aba917003c8de55e5bf85010f0ecf1f1ddd1408e/cups/http-addr.c#L229-L240"}, {"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/OpenPrinting/cups/commit/ff1f8a623e090dee8a8aadf12a6a4b25efac143d"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/OpenPrinting/cups/security/advisories/GHSA-vvwp-mv6j-hw6f"}, {"source": "security-advisories@github.com", "tags": ["Mailing List"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00001.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2024/06/11/1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "http://www.openwall.com/lists/oss-security/2024/06/12/4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "http://www.openwall.com/lists/oss-security/2024/06/12/5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "http://www.openwall.com/lists/oss-security/2024/11/08/3"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Product"], "url": "https://git.launchpad.net/ubuntu/+source/apparmor/tree/profiles/apparmor.d/abstractions/user-tmp#n21"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Product"], "url": "https://github.com/OpenPrinting/cups/blob/aba917003c8de55e5bf85010f0ecf1f1ddd1408e/cups/http-addr.c#L229-L240"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://github.com/OpenPrinting/cups/commit/ff1f8a623e090dee8a8aadf12a6a4b25efac143d"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/OpenPrinting/cups/security/advisories/GHSA-vvwp-mv6j-hw6f"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List"], "url": "https://lists.debian.org/debian-lts-announce/2024/06/msg00001.html"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-59"}, {"lang": "en", "value": "CWE-252"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"affected_release": [{"advisory": "RHSA-2024:4265", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "cups-1:2.2.6-60.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-07-02T00:00:00Z"}, {"advisory": "RHSA-2024:4265", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "cups-1:2.2.6-60.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-07-02T00:00:00Z"}, {"advisory": "RHSA-2024:4715", "cpe": "cpe:/a:redhat:rhel_aus:8.6", "package": "cups-1:2.2.6-45.el8_6.5", "product_name": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "release_date": "2024-07-24T00:00:00Z"}, {"advisory": "RHSA-2024:4715", "cpe": "cpe:/a:redhat:rhel_tus:8.6", "package": "cups-1:2.2.6-45.el8_6.5", "product_name": "Red Hat Enterprise Linux 8.6 Telecommunications Update Service", "release_date": "2024-07-24T00:00:00Z"}, {"advisory": "RHSA-2024:4715", "cpe": "cpe:/a:redhat:rhel_e4s:8.6", "package": "cups-1:2.2.6-45.el8_6.5", "product_name": "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions", "release_date": "2024-07-24T00:00:00Z"}, {"advisory": "RHSA-2024:4580", "cpe": "cpe:/a:redhat:rhel_eus:8.8", "package": "cups-1:2.2.6-51.el8_8.4", "product_name": "Red Hat Enterprise Linux 8.8 Extended Update Support", "release_date": "2024-07-16T00:00:00Z"}, {"advisory": "RHSA-2024:4776", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "cups-1:2.3.3op2-27.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-07-23T00:00:00Z"}, {"advisory": "RHSA-2024:4776", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "cups-1:2.3.3op2-27.el9_4", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-07-23T00:00:00Z"}, {"advisory": "RHSA-2024:5644", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "cups-1:2.3.3op2-16.el9_2.2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-08-20T00:00:00Z"}], "bugzilla": {"description": "cups: Cupsd Listen arbitrary chmod 0140777", "id": "2290318", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2290318"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N", "status": "verified"}, "cwe": "CWE-277", "details": ["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.", "A flaw was found in the cupsd server. When starting the cupsd server with a Listen configuration item pointing to a symbolic link, the cupsd process can perform an arbitrary chmod of the provided argument, providing world-writable access to the target. Since cupsd is often running as root, this issue can result in the change of permission of any user or system files to be world writable."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2024-35235", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "cups", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "cups", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "cups", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2024-06-11T14:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-35235\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-35235\nhttps://seclists.org/oss-sec/2024/q2/277"], "statement": "The CVE-2024-35235 vulnerability is classified as moderate severity rather than important primarily due to its requirement for elevated privileges and specific preconditions for exploitation. The vulnerability necessitates the ability to edit the cupsd.conf file, which typically requires administrative access. Furthermore, successful exploitation hinges on creating a symbolic link in a writable directory and manipulating the Listen directive within cupsd.conf. While this can lead to arbitrary chmod operations and potentially compromise system files, the precondition of administrative access significantly reduces the likelihood of exploitation by unauthorized users, thereby mitigating the overall impact and severity of the issue.", "threat_severity": "Moderate"}

{}