{"api_version":"1","generated_at":"2026-04-22T23:21:59+00:00","cve":"CVE-2020-29573","urls":{"html":"https://cve.report/CVE-2020-29573","api":"https://cve.report/api/cve/CVE-2020-29573.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2020-29573","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-29573"},"summary":{"title":"CVE-2020-29573","description":"sysdeps/i386/ldbl2mpn.c in the GNU C Library (aka glibc or libc6) before 2.23 on x86 targets has a stack-based buffer overflow if the input to any of the printf family of functions is an 80-bit long double with a non-canonical bit pattern, as seen when passing a \\x00\\x04\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x04 value to sprintf. NOTE: the issue does not affect glibc by default in 2016 or later (i.e., 2.23 or later) because of commits made in 2015 for inlining of C99 math functions through use of GCC built-ins. In other words, the reference to 2.23 is intentional despite the mention of \"Fixed for glibc 2.33\" in the 26649 reference.","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2020-12-06 00:15:00","updated_at":"2023-04-26 19:09:00"},"problem_types":["CWE-787"],"metrics":[],"references":[{"url":"https://sourceware.org/bugzilla/show_bug.cgi?id=26649","name":"https://sourceware.org/bugzilla/show_bug.cgi?id=26649","refsource":"MISC","tags":["Issue Tracking","Patch","Third Party Advisory"],"title":"26649 – printf should handle non-normal x86 long double numbers gracefully","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://security.gentoo.org/glsa/202101-20","name":"GLSA-202101-20","refsource":"GENTOO","tags":[],"title":"glibc: Multiple vulnerabilities (GLSA 202101-20) — Gentoo security","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://security.netapp.com/advisory/ntap-20210122-0004/","name":"https://security.netapp.com/advisory/ntap-20210122-0004/","refsource":"CONFIRM","tags":[],"title":"December 2020 GNU C Library Vulnerabilities in NetApp Products | NetApp Product Security","mime":"text/html","httpstatus":"200","archivestatus":"0"},{"url":"https://sourceware.org/pipermail/libc-alpha/2020-September/117779.html","name":"https://sourceware.org/pipermail/libc-alpha/2020-September/117779.html","refsource":"MISC","tags":["Patch","Third Party Advisory"],"title":"[PATCH] x86: Harden printf against non-normal long double values (bug 26649)","mime":"text/x-diff","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-29573","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-29573","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2020","cve_id":"29573","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"gnu","cpe5":"glibc","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"x86","cpe13":"*"},{"cve_year":"2020","cve_id":"29573","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"gnu","cpe5":"glibc","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"x86","cpe13":"*"},{"cve_year":"2020","cve_id":"29573","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"netapp","cpe5":"cloud_backup","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"29573","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"h","cpe4":"netapp","cpe5":"solidfire_baseboard_management_controller","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"29573","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"redhat","cpe5":"enterprise_linux","cpe6":"7.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"29573","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"redhat","cpe5":"enterprise_linux","cpe6":"7.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2020-29573","qid":"174895","title":"SUSE Enterprise Linux Security Update for glibc (SUSE-SU-2021:1165-1)"},{"cve":"CVE-2020-29573","qid":"239526","title":"Red Hat Update for glibc (RHSA-2021:2998)"},{"cve":"CVE-2020-29573","qid":"352480","title":"Amazon Linux Security Advisory for glibc: ALAS-2021-1511"},{"cve":"CVE-2020-29573","qid":"375781","title":"F5 BIG-IP ASM,LTM,APM BIG-IP Glibc Vulnerability (K27238230)"},{"cve":"CVE-2020-29573","qid":"377268","title":"Alibaba Cloud Linux Security Update for glibc (ALINUX2-SA-2021:0005)"},{"cve":"CVE-2020-29573","qid":"591406","title":"Siemens SIMATIC S7-1500 CPU GNU/Linux subsystem Multiple Vulnerabilities (SSB-439005, ICSA-22-104-13)"},{"cve":"CVE-2020-29573","qid":"670738","title":"EulerOS Security Update for glibc (EulerOS-SA-2021-2496)"},{"cve":"CVE-2020-29573","qid":"730228","title":"McAfee Web Gateway Multiple Vulnerabilities (WP-3445, WP-3483, WP-3527, WP-3528, WP-3547, WP-3584,WP-3589,WP-3611)"},{"cve":"CVE-2020-29573","qid":"750341","title":"OpenSUSE Security Update for glibc (openSUSE-SU-2021:0358-1)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2020-29573","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"sysdeps/i386/ldbl2mpn.c in the GNU C Library (aka glibc or libc6) before 2.23 on x86 targets has a stack-based buffer overflow if the input to any of the printf family of functions is an 80-bit long double with a non-canonical bit pattern, as seen when passing a \\x00\\x04\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x04 value to sprintf. NOTE: the issue does not affect glibc by default in 2016 or later (i.e., 2.23 or later) because of commits made in 2015 for inlining of C99 math functions through use of GCC built-ins. In other words, the reference to 2.23 is intentional despite the mention of \"Fixed for glibc 2.33\" in the 26649 reference."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"url":"https://sourceware.org/bugzilla/show_bug.cgi?id=26649","refsource":"MISC","name":"https://sourceware.org/bugzilla/show_bug.cgi?id=26649"},{"url":"https://sourceware.org/pipermail/libc-alpha/2020-September/117779.html","refsource":"MISC","name":"https://sourceware.org/pipermail/libc-alpha/2020-September/117779.html"},{"refsource":"CONFIRM","name":"https://security.netapp.com/advisory/ntap-20210122-0004/","url":"https://security.netapp.com/advisory/ntap-20210122-0004/"},{"refsource":"GENTOO","name":"GLSA-202101-20","url":"https://security.gentoo.org/glsa/202101-20"}]}},"nvd":{"publishedDate":"2020-12-06 00:15:00","lastModifiedDate":"2023-04-26 19:09:00","problem_types":["CWE-787"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL","baseScore":5},"severity":"MEDIUM","exploitabilityScore":10,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:x86:*","versionEndExcluding":"2.23","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2020","CveId":"29573","Ordinal":"192750","Title":"CVE-2020-29573","CVE":"CVE-2020-29573","Year":"2020"},"notes":[{"CveYear":"2020","CveId":"29573","Ordinal":"1","NoteData":"sysdeps/i386/ldbl2mpn.c in the GNU C Library (aka glibc or libc6) before 2.23 on x86 targets has a stack-based buffer overflow if the input to any of the printf family of functions is an 80-bit long double with a non-canonical bit pattern, as seen when passing a \\x00\\x04\\x00\\x00\\x00\\x00\\x00\\x00\\x00\\x04 value to sprintf. NOTE: the issue does not affect glibc by default in 2016 or later (i.e., 2.23 or later) because of commits made in 2015 for inlining of C99 math functions through use of GCC built-ins. In other words, the reference to 2.23 is intentional despite the mention of \"Fixed for glibc 2.33\" in the 26649 reference.","Type":"Description","Title":null},{"CveYear":"2020","CveId":"29573","Ordinal":"2","NoteData":"2020-12-05","Type":"Other","Title":"Published"},{"CveYear":"2020","CveId":"29573","Ordinal":"3","NoteData":"2021-01-24","Type":"Other","Title":"Modified"}]}}}