{ "document": { "aggregate_severity": { "text": "Low" }, "category": "csaf_vex", "csaf_version": "2.0", "distribution": { "text": "TuxCare License Agreement", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/almalinux9.2esu/vex/2023/cve-2023-29383-els_os-almalinux9_2esu.json" } ], "tracking": { "current_release_date": "2026-05-12T15:35:09Z", "generator": { "date": "2026-05-12T15:35:09Z", "engine": { "name": "pyCSAF" } }, "id": "CVE-2023-29383-ELS_OS-ALMALINUX9.2ESU", "initial_release_date": "2023-04-14T22:15:00Z", "revision_history": [ { "date": "2023-04-14T22:15:00Z", "number": "1", "summary": "Initial version" }, { "date": "2026-04-02T09:03:04Z", "number": "2", "summary": "Official Publication" }, { "date": "2026-05-06T14:31:44Z", "number": "3", "summary": "Update document" }, { "date": "2026-05-12T15:35:09Z", "number": "4", "summary": "Update document" } ], "status": "final", "version": "4" }, "title": "Security update on CVE-2023-29383" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "AlmaLinux 9.2", "product": { "name": "AlmaLinux 9.2", "product_id": "AlmaLinux-9.2", "product_identification_helper": { "cpe": "cpe:2.3:o:almalinux:almalinux:9.2:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "AlmaLinux" } ], "category": "vendor", "name": "AlmaLinux OS Foundation" }, { "branches": [ { "branches": [ { "category": "product_version", "name": "shadow-utils-2:4.9-6.el9.tuxcare.els1.x86_64", "product": { "name": "shadow-utils-2:4.9-6.el9.tuxcare.els1.x86_64", "product_id": "shadow-utils-2:4.9-6.el9.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/shadow-utils@4.9-6.el9.tuxcare.els1?arch=x86_64&epoch=2" } } }, { "category": "product_version", "name": "shadow-utils-subid-2:4.9-6.el9.tuxcare.els1.x86_64", "product": { "name": "shadow-utils-subid-2:4.9-6.el9.tuxcare.els1.x86_64", "product_id": "shadow-utils-subid-2:4.9-6.el9.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/shadow-utils-subid@4.9-6.el9.tuxcare.els1?arch=x86_64&epoch=2" } } }, { "category": "product_version", "name": "shadow-utils-subid-devel-2:4.9-6.el9.tuxcare.els1.x86_64", "product": { "name": "shadow-utils-subid-devel-2:4.9-6.el9.tuxcare.els1.x86_64", "product_id": "shadow-utils-subid-devel-2:4.9-6.el9.tuxcare.els1.x86_64", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/shadow-utils-subid-devel@4.9-6.el9.tuxcare.els1?arch=x86_64&epoch=2" } } } ], "category": "architecture", "name": "x86_64" }, { "branches": [ { "category": "product_version", "name": "shadow-utils-subid-2:4.9-6.el9.tuxcare.els1.i686", "product": { "name": "shadow-utils-subid-2:4.9-6.el9.tuxcare.els1.i686", "product_id": "shadow-utils-subid-2:4.9-6.el9.tuxcare.els1.i686", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/shadow-utils-subid@4.9-6.el9.tuxcare.els1?arch=i686&epoch=2" } } }, { "category": "product_version", "name": "shadow-utils-subid-devel-2:4.9-6.el9.tuxcare.els1.i686", "product": { "name": "shadow-utils-subid-devel-2:4.9-6.el9.tuxcare.els1.i686", "product_id": "shadow-utils-subid-devel-2:4.9-6.el9.tuxcare.els1.i686", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/shadow-utils-subid-devel@4.9-6.el9.tuxcare.els1?arch=i686&epoch=2" } } } ], "category": "architecture", "name": "i686" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "shadow-utils-2:4.9-6.el9.tuxcare.els1.x86_64 as a component of AlmaLinux 9.2", "product_id": "AlmaLinux-9.2:shadow-utils-2:4.9-6.el9.tuxcare.els1.x86_64" }, "product_reference": "shadow-utils-2:4.9-6.el9.tuxcare.els1.x86_64", "relates_to_product_reference": "AlmaLinux-9.2" }, { "category": "default_component_of", "full_product_name": { "name": "shadow-utils-subid-2:4.9-6.el9.tuxcare.els1.i686 as a component of AlmaLinux 9.2", "product_id": "AlmaLinux-9.2:shadow-utils-subid-2:4.9-6.el9.tuxcare.els1.i686" }, "product_reference": "shadow-utils-subid-2:4.9-6.el9.tuxcare.els1.i686", "relates_to_product_reference": "AlmaLinux-9.2" }, { "category": "default_component_of", "full_product_name": { "name": "shadow-utils-subid-2:4.9-6.el9.tuxcare.els1.x86_64 as a component of AlmaLinux 9.2", "product_id": "AlmaLinux-9.2:shadow-utils-subid-2:4.9-6.el9.tuxcare.els1.x86_64" }, "product_reference": "shadow-utils-subid-2:4.9-6.el9.tuxcare.els1.x86_64", "relates_to_product_reference": "AlmaLinux-9.2" }, { "category": "default_component_of", "full_product_name": { "name": "shadow-utils-subid-devel-2:4.9-6.el9.tuxcare.els1.i686 as a component of AlmaLinux 9.2", "product_id": "AlmaLinux-9.2:shadow-utils-subid-devel-2:4.9-6.el9.tuxcare.els1.i686" }, "product_reference": "shadow-utils-subid-devel-2:4.9-6.el9.tuxcare.els1.i686", "relates_to_product_reference": "AlmaLinux-9.2" }, { "category": "default_component_of", "full_product_name": { "name": "shadow-utils-subid-devel-2:4.9-6.el9.tuxcare.els1.x86_64 as a component of AlmaLinux 9.2", "product_id": "AlmaLinux-9.2:shadow-utils-subid-devel-2:4.9-6.el9.tuxcare.els1.x86_64" }, "product_reference": "shadow-utils-subid-devel-2:4.9-6.el9.tuxcare.els1.x86_64", "relates_to_product_reference": "AlmaLinux-9.2" } ] }, "vulnerabilities": [ { "cve": "CVE-2023-29383", "cwe": { "id": "CWE-74", "name": "Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')" }, "notes": [ { "category": "description", "text": "In Shadow 4.13, it is possible to inject control characters into fields provided to the SUID program chfn (change finger). Although it is not possible to exploit this directly (e.g., adding a new user fails because \\n is in the block list), it is possible to misrepresent the /etc/passwd file when viewed. Use of \\r manipulations and Unicode characters to work around blocking of the : character make it possible to give the impression that a new user has been added. In other words, an adversary may be able to convince a system administrator to take the system offline (an indirect, social-engineered denial of service) by demonstrating that \"cat /etc/passwd\" shows a rogue user account.", "title": "Vulnerability description" }, { "category": "general", "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.", "title": "CVSS score applicability" }, { "category": "other", "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.", "title": "Statement" } ], "product_status": { "known_not_affected": [ "AlmaLinux-9.2:shadow-utils-2:4.9-6.el9.tuxcare.els1.x86_64", "AlmaLinux-9.2:shadow-utils-subid-2:4.9-6.el9.tuxcare.els1.i686", "AlmaLinux-9.2:shadow-utils-subid-2:4.9-6.el9.tuxcare.els1.x86_64", "AlmaLinux-9.2:shadow-utils-subid-devel-2:4.9-6.el9.tuxcare.els1.i686", "AlmaLinux-9.2:shadow-utils-subid-devel-2:4.9-6.el9.tuxcare.els1.x86_64" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2023-29383" }, { "category": "external", "summary": "https://github.com/shadow-maint/shadow/commit/e5905c4b84d4fb90aefcd96ee618411ebfac663d", "url": "https://github.com/shadow-maint/shadow/commit/e5905c4b84d4fb90aefcd96ee618411ebfac663d" }, { "category": "external", "summary": "https://github.com/shadow-maint/shadow/pull/687", "url": "https://github.com/shadow-maint/shadow/pull/687" }, { "category": "external", "summary": "https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/cve-2023-29383-abusing-linux-chfn-to-misrepresent-etc-passwd/", "url": "https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/cve-2023-29383-abusing-linux-chfn-to-misrepresent-etc-passwd/" }, { "category": "external", "summary": "https://www.trustwave.com/en-us/resources/security-resources/security-advisories/?fid=31797", "url": "https://www.trustwave.com/en-us/resources/security-resources/security-advisories/?fid=31797" }, { "category": "external", "summary": "https://lists.debian.org/debian-lts-announce/2025/04/msg00026.html", "url": "https://lists.debian.org/debian-lts-announce/2025/04/msg00026.html" } ], "release_date": "2023-04-14T22:15:00Z", "scores": [ { "cvss_v3": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 3.3, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "version": "3.1" }, "products": [ "AlmaLinux-9.2:shadow-utils-2:4.9-6.el9.tuxcare.els1.x86_64", "AlmaLinux-9.2:shadow-utils-subid-2:4.9-6.el9.tuxcare.els1.i686", "AlmaLinux-9.2:shadow-utils-subid-2:4.9-6.el9.tuxcare.els1.x86_64", "AlmaLinux-9.2:shadow-utils-subid-devel-2:4.9-6.el9.tuxcare.els1.i686", "AlmaLinux-9.2:shadow-utils-subid-devel-2:4.9-6.el9.tuxcare.els1.x86_64" ] } ], "threats": [ { "category": "impact", "details": "Low" }, { "category": "impact", "date": "2026-05-06T14:11:21.287341Z", "details": "low", "product_ids": [ "AlmaLinux-9.2:shadow-utils-2:4.9-6.el9.tuxcare.els1.x86_64", "AlmaLinux-9.2:shadow-utils-subid-2:4.9-6.el9.tuxcare.els1.i686", "AlmaLinux-9.2:shadow-utils-subid-2:4.9-6.el9.tuxcare.els1.x86_64", "AlmaLinux-9.2:shadow-utils-subid-devel-2:4.9-6.el9.tuxcare.els1.i686", "AlmaLinux-9.2:shadow-utils-subid-devel-2:4.9-6.el9.tuxcare.els1.x86_64" ] } ] } ] }