{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2018-1172 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2018-1172 is a medium-severity vulnerability in Squid-Cache Squid, published on 16 May 2018. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2018-1172 and fix it if it is affected.\n\nWhat it is: CVE-2018-1172 is a medium-severity vulnerability in Squid-Cache Squid, published on 16 May 2018. 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-2018-1172 in the wild and no public exploit code.\n\nAffected product: Squid-Cache Squid. 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-2018-1172/ (Markdown: https://insights.sbomify.com/CVE-2018-1172/index.md)","id":"CVE-2018-1172","markdown":"https://insights.sbomify.com/CVE-2018-1172/index.md","name":"CVE-2018-1172","record":{"aliases":["ALPINE-CVE-2018-1172","DEBIAN-CVE-2018-1172","GHSA-5pj9-pxj3-pc8r","SUSE-SU-2018:1122-1","SUSE-SU-2018:1365-1"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Squid proxy server","requires_auth":"none","summary":"Remote attackers can cause a denial of service in Squid proxy servers by triggering a null pointer dereference via crafted requests.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"zdi","cpe":[{"product":"squid","vendor":"squid-cache"}],"cvss":{"score":5.9,"severity":"medium","source":"nvd","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.0"},"cwes":[{"id":"CWE-476","name":"NULL Pointer Dereference"}],"description":"This vulnerability allows remote attackers to deny service on vulnerable installations of The Squid Software Foundation Squid 3.5.27-20180318. Authentication is not required to exploit this vulnerability. The specific flaw exists within ClientRequestContext::sslBumpAccessCheck(). A crafted request can trigger the dereference of a null pointer. An attacker can leverage this vulnerability to create a denial-of-service condition to users of the system. Was ZDI-CAN-6088.","ecosystems":["SUSE:Linux Enterprise Server 11 SP4","SUSE:Linux Enterprise Server 12 SP3","SUSE:Linux Enterprise Server for SAP Applications 11 SP4","SUSE:Linux Enterprise Server for SAP Applications 12 SP3"],"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":"Null dereference in The Squid Software Foundation Squid","id":"CVE-2018-1172","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"squid-cache:squid","products":["squid-cache:squid"],"type":"null_dereference","year":"2018"},"n_packages":4,"n_references":2,"next":{"headline":"Use after free in Foxit Reader","id":"CVE-2018-1173"},"packages":[{"ecosystem":"SUSE:Linux Enterprise Server 11 SP4","fixed":["3.1.23-8.16.37.6.1"],"introduced":["0"],"last_affected":[],"package":"squid3","purl":"pkg:rpm/suse/squid3\u0026distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4","source":"SUSE-SU-2018:1365-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP3","fixed":["3.5.21-26.9.1"],"introduced":["0"],"last_affected":[],"package":"squid","purl":"pkg:rpm/suse/squid\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3","source":"SUSE-SU-2018:1122-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 11 SP4","fixed":["3.1.23-8.16.37.6.1"],"introduced":["0"],"last_affected":[],"package":"squid3","purl":"pkg:rpm/suse/squid3\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4","source":"SUSE-SU-2018:1365-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP3","fixed":["3.5.21-26.9.1"],"introduced":["0"],"last_affected":[],"package":"squid","purl":"pkg:rpm/suse/squid\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3","source":"SUSE-SU-2018:1122-1"}],"prev":{"headline":"Memory corruption in Joyent SmartOS","id":"CVE-2018-1171"},"products":["The Squid Software Foundation Squid"],"published":"2018-05-16","related":[{"cvss_score":10,"headline":"Squid vulnerable to information disclosure via authentication credential leakage in error handling","id":"CVE-2025-62168","kev_date_added":null,"published":"2025-10-17"},{"cvss_score":9.3,"headline":"Squid's URN Handling can lead to Buffer Overflow","id":"CVE-2025-54574","kev_date_added":null,"published":"2025-08-01"},{"cvss_score":9.2,"headline":"Squid vulnerable to Denial of Service in ICP Request handling","id":"CVE-2026-33526","kev_date_added":null,"published":"2026-03-26"},{"cvss_score":8.7,"headline":"Squid has Denial of Service in ICP Response handling","id":"CVE-2026-32748","kev_date_added":null,"published":"2026-03-26"},{"cvss_score":8.6,"headline":"SQUID-2023:10 Denial of Service in HTTP Request parsing","id":"CVE-2023-50269","kev_date_added":null,"published":"2023-12-14"},{"cvss_score":8.6,"headline":"Denial of Service in HTTP Message Processing in Squid","id":"CVE-2023-49285","kev_date_added":null,"published":"2023-12-04"},{"cvss_score":8.6,"headline":"Denial of Service in Helper Process management","id":"CVE-2023-49286","kev_date_added":null,"published":"2023-12-04"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-05","vendors":["The Squid Software Foundation"]},"summary":"Remote attackers can cause a denial of service in Squid proxy servers by triggering a null pointer dereference via crafted requests.","url":"https://insights.sbomify.com/CVE-2018-1172/"}