{"answers":{"affected":"It affects 4 products.","exploited":"There is no known exploitation of CVE-2023-3347 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2023-3347 is a medium-severity vulnerability in Fedoraproject Fedora, published on 20 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-3347 and fix it if it is affected.\n\nWhat it is: CVE-2023-3347 is a medium-severity vulnerability in Fedoraproject Fedora, published on 20 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-3347 in the wild and no public exploit code.\n\nAffected product: Fedoraproject Fedora. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2023-3347/ (Markdown: https://insights.sbomify.com/CVE-2023-3347/index.md)","id":"CVE-2023-3347","markdown":"https://insights.sbomify.com/CVE-2023-3347/index.md","name":"CVE-2023-3347","record":{"aliases":["ALSA-2023:4325","ALSA-2023:4328","AZL-48166","DEBIAN-CVE-2023-3347","ECHO-aaa9-06cc-7b7a","GHSA-m82c-5hpw-48f7","RHSA-2023:4325","RHSA-2023:4328"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Samba file server","requires_auth":"none","summary":"Attackers can bypass SMB2 packet signing enforcement to perform man-in-the-middle attacks and modify data in transit.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"fedora","vendor":"fedoraproject"},{"product":"enterprise_linux","vendor":"redhat"},{"product":"storage","vendor":"redhat"},{"product":"samba","vendor":"samba"}],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-924","name":"Improper Enforcement of Message Integrity During Transmission in a Communication Channel"},{"id":"CWE-347","name":"Improper Verification of Cryptographic Signature"}],"description":"A vulnerability was found in Samba's SMB2 packet signing mechanism. The SMB2 packet signing is not enforced if an admin configured \"server signing = required\" or for SMB2 connections to Domain Controllers where SMB2 packet signing is mandatory. This flaw allows an attacker to perform attacks, such as a man-in-the-middle attack, by intercepting the network traffic and modifying the SMB2 messages between client and server, affecting the integrity of the data.","ecosystems":["AlmaLinux:8","AlmaLinux:9","Red Hat:enterprise_linux:8::appstream","Red Hat:enterprise_linux:8::baseos","Red Hat:enterprise_linux:8::crb","Red Hat:enterprise_linux:9::appstream","Red Hat:enterprise_linux:9::baseos","Red Hat:enterprise_linux:9::crb","Red Hat:enterprise_linux:9::resilientstorage"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Samba: smb2 packet signing is not enforced when \"server signing = required\" is set","id":"CVE-2023-3347","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"fedoraproject:fedora","products":["fedoraproject:fedora","redhat:enterprise_linux","samba:samba"],"type":"security_feature_bypass","year":"2023"},"n_packages":311,"n_references":5,"next":{"headline":"Directory traversal vulnerability in Cloudflare Wrangler","id":"CVE-2023-3348"},"packages":[{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"ctdb","purl":"pkg:rpm/almalinux/ctdb","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"libnetapi","purl":"pkg:rpm/almalinux/libnetapi","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"libnetapi-devel","purl":"pkg:rpm/almalinux/libnetapi-devel","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"libsmbclient","purl":"pkg:rpm/almalinux/libsmbclient","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"libsmbclient-devel","purl":"pkg:rpm/almalinux/libsmbclient-devel","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"libwbclient","purl":"pkg:rpm/almalinux/libwbclient","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"libwbclient-devel","purl":"pkg:rpm/almalinux/libwbclient-devel","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"python3-samba","purl":"pkg:rpm/almalinux/python3-samba","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"python3-samba-dc","purl":"pkg:rpm/almalinux/python3-samba-dc","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"python3-samba-devel","purl":"pkg:rpm/almalinux/python3-samba-devel","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"python3-samba-test","purl":"pkg:rpm/almalinux/python3-samba-test","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba","purl":"pkg:rpm/almalinux/samba","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-client","purl":"pkg:rpm/almalinux/samba-client","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-client-libs","purl":"pkg:rpm/almalinux/samba-client-libs","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-common","purl":"pkg:rpm/almalinux/samba-common","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-common-libs","purl":"pkg:rpm/almalinux/samba-common-libs","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-common-tools","purl":"pkg:rpm/almalinux/samba-common-tools","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-dc-libs","purl":"pkg:rpm/almalinux/samba-dc-libs","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-dcerpc","purl":"pkg:rpm/almalinux/samba-dcerpc","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-devel","purl":"pkg:rpm/almalinux/samba-devel","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-krb5-printing","purl":"pkg:rpm/almalinux/samba-krb5-printing","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-ldb-ldap-modules","purl":"pkg:rpm/almalinux/samba-ldb-ldap-modules","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-libs","purl":"pkg:rpm/almalinux/samba-libs","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-pidl","purl":"pkg:rpm/almalinux/samba-pidl","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-test","purl":"pkg:rpm/almalinux/samba-test","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-test-libs","purl":"pkg:rpm/almalinux/samba-test-libs","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-tools","purl":"pkg:rpm/almalinux/samba-tools","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-usershares","purl":"pkg:rpm/almalinux/samba-usershares","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-vfs-iouring","purl":"pkg:rpm/almalinux/samba-vfs-iouring","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-winbind","purl":"pkg:rpm/almalinux/samba-winbind","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-winbind-clients","purl":"pkg:rpm/almalinux/samba-winbind-clients","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-winbind-krb5-locator","purl":"pkg:rpm/almalinux/samba-winbind-krb5-locator","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-winbind-modules","purl":"pkg:rpm/almalinux/samba-winbind-modules","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:8","fixed":["4.17.5-3.el8_8.alma"],"introduced":["0"],"last_affected":[],"package":"samba-winexe","purl":"pkg:rpm/almalinux/samba-winexe","source":"ALSA-2023:4328"},{"ecosystem":"AlmaLinux:9","fixed":["4.17.5-103.el9_2.alma"],"introduced":["0"],"last_affected":[],"package":"ctdb","purl":"pkg:rpm/almalinux/ctdb","source":"ALSA-2023:4325"},{"ecosystem":"AlmaLinux:9","fixed":["4.17.5-103.el9_2.alma"],"introduced":["0"],"last_affected":[],"package":"libnetapi","purl":"pkg:rpm/almalinux/libnetapi","source":"ALSA-2023:4325"},{"ecosystem":"AlmaLinux:9","fixed":["4.17.5-103.el9_2.alma"],"introduced":["0"],"last_affected":[],"package":"libnetapi-devel","purl":"pkg:rpm/almalinux/libnetapi-devel","source":"ALSA-2023:4325"},{"ecosystem":"AlmaLinux:9","fixed":["4.17.5-103.el9_2.alma"],"introduced":["0"],"last_affected":[],"package":"libsmbclient","purl":"pkg:rpm/almalinux/libsmbclient","source":"ALSA-2023:4325"},{"ecosystem":"AlmaLinux:9","fixed":["4.17.5-103.el9_2.alma"],"introduced":["0"],"last_affected":[],"package":"libsmbclient-devel","purl":"pkg:rpm/almalinux/libsmbclient-devel","source":"ALSA-2023:4325"},{"ecosystem":"AlmaLinux:9","fixed":["4.17.5-103.el9_2.alma"],"introduced":["0"],"last_affected":[],"package":"libwbclient","purl":"pkg:rpm/almalinux/libwbclient","source":"ALSA-2023:4325"}],"prev":{"headline":"Denial of Service (DoS) and Remote Code Execution Vulnerability in MITSUBISHI CNC Series","id":"CVE-2023-3346"},"products":["Red Hat Enterprise Linux 6","Red Hat Enterprise Linux 7","Red Hat Enterprise Linux 8","Red Hat Enterprise Linux 9","Red Hat Storage 3"],"published":"2023-07-20","related":[{"cvss_score":9.8,"headline":"PHP-CGI OS Command Injection","id":"CVE-2024-4577","kev_date_added":"2024-06-12","published":"2024-06-09"},{"cvss_score":9.8,"headline":"Grafana Authentication Bypass","id":"CVE-2021-39226","kev_date_added":"2022-08-25","published":"2021-10-05"},{"cvss_score":9.8,"headline":"VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow","id":"CVE-2019-5544","kev_date_added":"2021-11-03","published":"2019-12-06"},{"cvss_score":9.6,"headline":"Google Chromium V8 Type Confusion","id":"CVE-2024-4947","kev_date_added":"2024-05-20","published":"2024-05-15"},{"cvss_score":9.6,"headline":"Google Chromium Visuals Use-After-Free","id":"CVE-2024-4671","kev_date_added":"2024-05-13","published":"2024-05-09"},{"cvss_score":9.6,"headline":"Google Chromium Mojo Insufficient Data Validation","id":"CVE-2022-3075","kev_date_added":"2022-09-08","published":"2022-09-26"},{"cvss_score":9.6,"headline":"Google Chromium Indexed DB API Use-After-Free","id":"CVE-2021-30633","kev_date_added":"2021-11-03","published":"2021-10-08"}],"sources":[{"class":"attribution","licence":"MIT","name":"AlmaLinux","prefix":"ALSA"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-11-20","vendors":["Red Hat"]},"summary":"Attackers can bypass SMB2 packet signing enforcement to perform man-in-the-middle attacks and modify data in transit.","url":"https://insights.sbomify.com/CVE-2023-3347/"}