{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2019-1543 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2019-1543 is a high-severity vulnerability in Openssl Openssl, published on 6 Mar 2019. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2019-1543 and fix it if it is affected.\n\nWhat it is: CVE-2019-1543 is a high-severity vulnerability in Openssl Openssl, published on 6 Mar 2019. 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-2019-1543 in the wild and no public exploit code.\n\nAffected product: Openssl Openssl. 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-2019-1543/ (Markdown: https://insights.sbomify.com/CVE-2019-1543/index.md)","id":"CVE-2019-1543","markdown":"https://insights.sbomify.com/CVE-2019-1543/index.md","name":"CVE-2019-1543","record":{"aliases":["ALPINE-CVE-2019-1543","CLEANSTART-2023-MI80825","CLEANSTART-2026-IH90619","DEBIAN-CVE-2019-1543","DSA-4475-1","GHSA-qpgr-gj53-5m6w","SUSE-SU-2019:0678-1","SUSE-SU-2019:0787-1","UBUNTU-CVE-2019-1543","openSUSE-SU-2019:1147-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":true,"product_category":"OpenSSL cryptographic library","requires_auth":"none","summary":"Applications using OpenSSL ChaCha20-Poly1305 with non-default long nonces may reuse nonces, compromising confidentiality and integrity.","user_interaction":"not_required","vuln_class":"weak_cryptography"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"openssl","cpe":[{"product":"openssl","vendor":"openssl"}],"cvss":{"score":7.4,"severity":"high","source":"nvd","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.0"},"cwes":[{"id":"CWE-330","name":"Use of Insufficiently Random Values"},{"id":"CWE-327","name":"Use of a Broken or Risky Cryptographic Algorithm"}],"description":"ChaCha20-Poly1305 is an AEAD cipher, and requires a unique nonce input for every encryption operation. RFC 7539 specifies that the nonce value (IV) should be 96 bits (12 bytes). OpenSSL allows a variable nonce length and front pads the nonce with 0 bytes if it is less than 12 bytes. However it also incorrectly allows a nonce to be set of up to 16 bytes. In this case only the last 12 bytes are significant and any additional leading bytes are ignored. It is a requirement of using this cipher that nonce values are unique. Messages encrypted using a reused nonce value are susceptible to serious confidentiality and integrity attacks. If an application changes the default nonce length to be longer than 12 bytes and then makes a change to the leading bytes of the nonce expecting the new value to be a new unique nonce then such an application could inadvertently encrypt messages with a reused nonce. Additionally the ignored bytes in a long nonce are not covered by the integrity guarantee of this cipher. Any application that relies on the integrity of these ignored leading bytes of a long nonce may be further affected. Any OpenSSL internal use of this cipher, including in SSL/TLS, is safe because no such use sets such a long nonce value. However user applications that use this cipher directly and set a non-default nonce length to be longer than 12 bytes may be vulnerable. OpenSSL versions 1.1.1 and 1.1.0 are affected by this issue. Due to the limited scope of affected deployments this has been assessed as low severity and therefore we are not creating new releases at this time. Fixed in OpenSSL 1.1.1c (Affected 1.1.1-1.1.1b). Fixed in OpenSSL 1.1.0k (Affected 1.1.0-1.1.0j).","ecosystems":["SUSE:Linux Enterprise Desktop 12 SP4","SUSE:Linux Enterprise Module for Basesystem 15","SUSE:Linux Enterprise Server 12 SP4","SUSE:Linux Enterprise Server for SAP Applications 12 SP4","SUSE:Linux Enterprise Software Development Kit 12 SP4","openSUSE:Leap 15.0"],"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":"ChaCha20-Poly1305 with long nonces","id":"CVE-2019-1543","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"openssl:openssl","products":["openssl:openssl"],"type":"weak_cryptography","year":"2019"},"n_packages":6,"n_references":13,"next":{"headline":"DO NOT USE THIS CANDIDATE NUMBER.","id":"CVE-2019-1544"},"packages":[{"ecosystem":"SUSE:Linux Enterprise Desktop 12 SP4","fixed":["1.1.1-2.9.1"],"introduced":["0"],"last_affected":[],"package":"openssl-1_1","purl":"pkg:rpm/suse/openssl-1_1\u0026distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4","source":"SUSE-SU-2019:0787-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15","fixed":["1.1.0i-4.21.1"],"introduced":["0"],"last_affected":[],"package":"openssl-1_1","purl":"pkg:rpm/suse/openssl-1_1\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015","source":"SUSE-SU-2019:0678-1"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP4","fixed":["1.1.1-2.9.1"],"introduced":["0"],"last_affected":[],"package":"openssl-1_1","purl":"pkg:rpm/suse/openssl-1_1\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4","source":"SUSE-SU-2019:0787-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP4","fixed":["1.1.1-2.9.1"],"introduced":["0"],"last_affected":[],"package":"openssl-1_1","purl":"pkg:rpm/suse/openssl-1_1\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4","source":"SUSE-SU-2019:0787-1"},{"ecosystem":"SUSE:Linux Enterprise Software Development Kit 12 SP4","fixed":["1.1.1-2.9.1"],"introduced":["0"],"last_affected":[],"package":"openssl-1_1","purl":"pkg:rpm/suse/openssl-1_1\u0026distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4","source":"SUSE-SU-2019:0787-1"},{"ecosystem":"openSUSE:Leap 15.0","fixed":["1.1.0i-lp150.3.22.3"],"introduced":["0"],"last_affected":[],"package":"openssl-1_1","purl":"pkg:rpm/opensuse/openssl-1_1\u0026distro=openSUSE%20Leap%2015.0","source":"openSUSE-SU-2019:1147-1"}],"prev":{"headline":"DO NOT USE THIS CANDIDATE NUMBER.","id":"CVE-2019-1542"},"products":["OpenSSL"],"published":"2019-03-06","related":[{"cvss_score":10,"headline":"Null dereference in n/a","id":"CVE-2009-3245","kev_date_added":null,"published":"2010-03-05"},{"cvss_score":10,"headline":"Memory corruption in n/a","id":"CVE-2006-3738","kev_date_added":null,"published":"2006-09-28"},{"cvss_score":9.8,"headline":"Untrusted Sender DN Used as Format String in CMP Response Validation","id":"CVE-2026-63073","kev_date_added":null,"published":"2026-08-25"},{"cvss_score":9.8,"headline":"Use after free in n/a","id":"CVE-2016-6309","kev_date_added":null,"published":"2016-09-26"},{"cvss_score":9.8,"headline":"Integer overflow in n/a","id":"CVE-2016-0799","kev_date_added":null,"published":"2016-03-03"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2016-2842","kev_date_added":null,"published":"2016-03-03"},{"cvss_score":9.8,"headline":"Memory corruption in n/a","id":"CVE-2003-0545","kev_date_added":null,"published":"2003-10-01"}],"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":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":"2024-09-16","vendors":["OpenSSL"]},"summary":"Applications using OpenSSL ChaCha20-Poly1305 with non-default long nonces may reuse nonces, compromising confidentiality and integrity.","url":"https://insights.sbomify.com/CVE-2019-1543/"}