{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-6935 in the wild and no public exploit code.","fix":"Change a configuration setting.","what":"CVE-2023-6935 is a medium-severity vulnerability in Wolfssl Wolfssl, published on 9 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-6935 and fix it if it is affected.\n\nWhat it is: CVE-2023-6935 is a medium-severity vulnerability in Wolfssl Wolfssl, published on 9 Feb 2024. 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-2023-6935 in the wild and no public exploit code.\n\nAffected product: Wolfssl Wolfssl. 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-2023-6935/ (Markdown: https://insights.sbomify.com/CVE-2023-6935/index.md)","id":"CVE-2023-6935","markdown":"https://insights.sbomify.com/CVE-2023-6935/index.md","name":"CVE-2023-6935","record":{"aliases":["DEBIAN-CVE-2023-6935","GHSA-r36f-f47x-637q","JLSEC-2026-677","UBUNTU-CVE-2023-6935"],"analysis":{"component_type":"library","fix_type":"configuration_change","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"SSL/TLS library","requires_auth":"none","summary":"Attackers can decrypt ciphertexts and forge signatures via timing attacks if static RSA is enabled, requiring configuration changes to mitigate.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"wolfSSL","cpe":[{"product":"wolfssl","vendor":"wolfssl"}],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-203","name":"Observable Discrepancy"}],"description":"wolfSSL SP Math All RSA implementation is vulnerable to the Marvin Attack, new variation of a timing Bleichenbacher style attack, when built with the following options to configure:\n\n--enable-all CFLAGS=\"-DWOLFSSL_STATIC_RSA\"\n\nThe define “WOLFSSL_STATIC_RSA” enables static RSA cipher suites, which is not recommended, and has been disabled by default since wolfSSL 3.6.6.  Therefore the default build since 3.6.6, even with \"--enable-all\", is not vulnerable to the Marvin Attack. The vulnerability is specific to static RSA cipher suites, and expected to be padding-independent.\n\nThe vulnerability allows an attacker to decrypt ciphertexts and forge signatures after probing with a large number of test observations. However the server’s private key is not exposed.","ecosystems":[],"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":"Marvin Attack vulnerability in SP Math All RSA","id":"CVE-2023-6935","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"wolfssl:wolfssl","products":["wolfssl:wolfssl"],"type":"information_disclosure","year":"2023"},"n_packages":0,"n_references":2,"next":{"headline":"Heap-buffer over-read with WOLFSSL_CALLBACKS","id":"CVE-2023-6936"},"packages":[],"prev":{"headline":"Limit Login Attempts Reloaded \u003c= 2.25.26 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode","id":"CVE-2023-6934"},"products":["wolfSSL"],"published":"2024-02-09","related":[{"cvss_score":10,"headline":"Buffer overread in domain name matching","id":"CVE-2024-5991","kev_date_added":null,"published":"2024-08-27"},{"cvss_score":9.8,"headline":"Security feature bypass in n/a","id":"CVE-2021-37155","kev_date_added":null,"published":"2021-07-21"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2020-36177","kev_date_added":null,"published":"2021-01-06"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2014-2896","kev_date_added":null,"published":"2020-01-28"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2014-2897","kev_date_added":null,"published":"2020-01-28"},{"cvss_score":9.8,"headline":"Information disclosure in n/a","id":"CVE-2014-2898","kev_date_added":null,"published":"2020-01-28"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2019-16748","kev_date_added":null,"published":"2019-09-24"}],"sources":[{"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":"2024-08-02","vendors":["wolfSSL"]},"summary":"Attackers can decrypt ciphertexts and forge signatures via timing attacks if static RSA is enabled, requiring configuration changes to mitigate.","url":"https://insights.sbomify.com/CVE-2023-6935/"}