CVE-2021-45444

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2022-05-17T06:08:11.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://zsh.sourceforge.io/releases.html"}, {"tags": ["x_refsource_MISC"], "url": "https://vuln.ryotak.me/advisories/63"}, {"name": "FEDORA-2022-adf0c6d196", "tags": ["vendor-advisory", "x_refsource_FEDORA"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2P3LPMGENEHKDWFO4MWMZSZL6G7Y4CV7/"}, {"name": "DSA-5078", "tags": ["vendor-advisory", "x_refsource_DEBIAN"], "url": "https://www.debian.org/security/2022/dsa-5078"}, {"name": "[debian-lts-announce] 20220218 [SECURITY] [DLA 2926-1] zsh security update", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "https://lists.debian.org/debian-lts-announce/2022/02/msg00020.html"}, {"name": "FEDORA-2022-0a06987c3c", "tags": ["vendor-advisory", "x_refsource_FEDORA"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BWF3EXNBX5SVFDBL4ZFOD4GJBWFUKWN4/"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://support.apple.com/kb/HT213257"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://support.apple.com/kb/HT213256"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://support.apple.com/kb/HT213255"}, {"name": "20220516 APPLE-SA-2022-05-16-4 Security Update 2022-004 Catalina", "tags": ["mailing-list", "x_refsource_FULLDISC"], "url": "http://seclists.org/fulldisclosure/2022/May/33"}, {"name": "20220516 APPLE-SA-2022-05-16-3 macOS Big Sur 11.6.6", "tags": ["mailing-list", "x_refsource_FULLDISC"], "url": "http://seclists.org/fulldisclosure/2022/May/35"}, {"name": "20220516 APPLE-SA-2022-05-16-2 macOS Monterey 12.4", "tags": ["mailing-list", "x_refsource_FULLDISC"], "url": "http://seclists.org/fulldisclosure/2022/May/38"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2021-45444", "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": "In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://zsh.sourceforge.io/releases.html", "refsource": "MISC", "url": "https://zsh.sourceforge.io/releases.html"}, {"name": "https://vuln.ryotak.me/advisories/63", "refsource": "MISC", "url": "https://vuln.ryotak.me/advisories/63"}, {"name": "FEDORA-2022-adf0c6d196", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2P3LPMGENEHKDWFO4MWMZSZL6G7Y4CV7/"}, {"name": "DSA-5078", "refsource": "DEBIAN", "url": "https://www.debian.org/security/2022/dsa-5078"}, {"name": "[debian-lts-announce] 20220218 [SECURITY] [DLA 2926-1] zsh security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2022/02/msg00020.html"}, {"name": "FEDORA-2022-0a06987c3c", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BWF3EXNBX5SVFDBL4ZFOD4GJBWFUKWN4/"}, {"name": "https://support.apple.com/kb/HT213257", "refsource": "CONFIRM", "url": "https://support.apple.com/kb/HT213257"}, {"name": "https://support.apple.com/kb/HT213256", "refsource": "CONFIRM", "url": "https://support.apple.com/kb/HT213256"}, {"name": "https://support.apple.com/kb/HT213255", "refsource": "CONFIRM", "url": "https://support.apple.com/kb/HT213255"}, {"name": "20220516 APPLE-SA-2022-05-16-4 Security Update 2022-004 Catalina", "refsource": "FULLDISC", "url": "http://seclists.org/fulldisclosure/2022/May/33"}, {"name": "20220516 APPLE-SA-2022-05-16-3 macOS Big Sur 11.6.6", "refsource": "FULLDISC", "url": "http://seclists.org/fulldisclosure/2022/May/35"}, {"name": "20220516 APPLE-SA-2022-05-16-2 macOS Monterey 12.4", "refsource": "FULLDISC", "url": "http://seclists.org/fulldisclosure/2022/May/38"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T04:39:20.752Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://zsh.sourceforge.io/releases.html"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://vuln.ryotak.me/advisories/63"}, {"name": "FEDORA-2022-adf0c6d196", "tags": ["vendor-advisory", "x_refsource_FEDORA", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2P3LPMGENEHKDWFO4MWMZSZL6G7Y4CV7/"}, {"name": "DSA-5078", "tags": ["vendor-advisory", "x_refsource_DEBIAN", "x_transferred"], "url": "https://www.debian.org/security/2022/dsa-5078"}, {"name": "[debian-lts-announce] 20220218 [SECURITY] [DLA 2926-1] zsh security update", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "https://lists.debian.org/debian-lts-announce/2022/02/msg00020.html"}, {"name": "FEDORA-2022-0a06987c3c", "tags": ["vendor-advisory", "x_refsource_FEDORA", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BWF3EXNBX5SVFDBL4ZFOD4GJBWFUKWN4/"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://support.apple.com/kb/HT213257"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://support.apple.com/kb/HT213256"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://support.apple.com/kb/HT213255"}, {"name": "20220516 APPLE-SA-2022-05-16-4 Security Update 2022-004 Catalina", "tags": ["mailing-list", "x_refsource_FULLDISC", "x_transferred"], "url": "http://seclists.org/fulldisclosure/2022/May/33"}, {"name": "20220516 APPLE-SA-2022-05-16-3 macOS Big Sur 11.6.6", "tags": ["mailing-list", "x_refsource_FULLDISC", "x_transferred"], "url": "http://seclists.org/fulldisclosure/2022/May/35"}, {"name": "20220516 APPLE-SA-2022-05-16-2 macOS Monterey 12.4", "tags": ["mailing-list", "x_refsource_FULLDISC", "x_transferred"], "url": "http://seclists.org/fulldisclosure/2022/May/38"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2021-45444", "datePublished": "2022-02-13T05:32:21.000Z", "dateReserved": "2021-12-21T00:00:00.000Z", "dateUpdated": "2024-08-04T04:39:20.752Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:zsh:zsh:*:*:*:*:*:*:*:*", "matchCriteriaId": "9E81CC0B-D7B9-40E7-82F9-DFAE6C223E71", "versionEndExcluding": "5.8.1", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*", "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*", "matchCriteriaId": "80E516C0-98A4-4ADE-B69F-66A772E2BAAA", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252", "vulnerable": true}, {"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73", "vulnerable": true}, {"criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*", "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*", "matchCriteriaId": "DB8A73F8-3074-4B32-B9F6-343B6B1988C5", "versionEndExcluding": "10.15.7", "versionStartIncluding": "10.15", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020:*:*:*:*:*:*", "matchCriteriaId": "F12CC8B5-C1EB-419E-8496-B9A3864656AD", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:*", "matchCriteriaId": "F1F4BF7F-90D4-4668-B4E6-B06F4070F448", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-005:*:*:*:*:*:*", "matchCriteriaId": "7FD7176C-F4D1-43A7-9E49-BA92CA0D9980", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-007:*:*:*:*:*:*", "matchCriteriaId": "2703DE0B-8A9E-4A9D-9AE8-028E22BF47CA", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-001:*:*:*:*:*:*", "matchCriteriaId": "0F441A43-1669-478D-9EC8-E96882DE4F9F", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-002:*:*:*:*:*:*", "matchCriteriaId": "D425C653-37A2-448C-BF2F-B684ADB08A26", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-003:*:*:*:*:*:*", "matchCriteriaId": "A54D63B7-B92B-47C3-B1C5-9892E5873A98", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-006:*:*:*:*:*:*", "matchCriteriaId": "012052B5-9AA7-4FD3-9C80-5F615330039D", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-007:*:*:*:*:*:*", "matchCriteriaId": "50F21A3C-0AC3-48C5-A4F8-5A7B478875B4", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-008:*:*:*:*:*:*", "matchCriteriaId": "8E974DC6-F7D9-4389-9AF9-863F6E419CE6", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2022-001:*:*:*:*:*:*", "matchCriteriaId": "156A6382-2BD3-4882-90B2-8E7CF6659E17", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2022-002:*:*:*:*:*:*", "matchCriteriaId": "20A2FDB2-6712-406A-9896-C0B44508B07D", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2022-003:*:*:*:*:*:*", "matchCriteriaId": "49F537A0-DC42-4176-B22F-C80D179DD99D", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "matchCriteriaId": "09A6345C-D813-43BA-B12E-789C80653F86", "versionEndExcluding": "11.6.6", "versionStartIncluding": "11.0", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "matchCriteriaId": "56A8A170-44A7-4334-88B0-CB4413E28E53", "versionEndExcluding": "12.4", "versionStartIncluding": "12.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion."}, {"lang": "es", "value": "En zsh versiones anteriores a 5.8.1, un atacante puede lograr una ejecuci\u00f3n de c\u00f3digo si controla la salida de un comando dentro del prompt, como lo demuestra un argumento %F. Esto ocurre debido a la expansi\u00f3n recursiva PROMPT_SUBST"}], "id": "CVE-2021-45444", "lastModified": "2026-06-17T04:13:22.823", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "HIGH", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.1, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:H/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 4.9, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-02-14T12:15:15.750", "references": [{"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2022/May/33"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2022/May/35"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2022/May/38"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/02/msg00020.html"}, {"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2P3LPMGENEHKDWFO4MWMZSZL6G7Y4CV7/"}, {"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BWF3EXNBX5SVFDBL4ZFOD4GJBWFUKWN4/"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://support.apple.com/kb/HT213255"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://support.apple.com/kb/HT213256"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://support.apple.com/kb/HT213257"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://vuln.ryotak.me/advisories/63"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2022/dsa-5078"}, {"source": "cve@mitre.org", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://zsh.sourceforge.io/releases.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2022/May/33"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2022/May/35"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2022/May/38"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/02/msg00020.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2P3LPMGENEHKDWFO4MWMZSZL6G7Y4CV7/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BWF3EXNBX5SVFDBL4ZFOD4GJBWFUKWN4/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://support.apple.com/kb/HT213255"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://support.apple.com/kb/HT213256"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://support.apple.com/kb/HT213257"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://vuln.ryotak.me/advisories/63"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.debian.org/security/2022/dsa-5078"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Third Party Advisory"], "url": "https://zsh.sourceforge.io/releases.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2022:2120", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "zsh-0:5.5.1-9.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-05-10T00:00:00Z"}, {"advisory": "RHSA-2022:2120", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "zsh-0:5.5.1-9.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-05-10T00:00:00Z"}], "bugzilla": {"description": "zsh: Prompt expansion vulnerability", "id": "2054089", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2054089"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-77", "details": ["In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.", "A vulnerability was found in zsh in the parsecolorchar() function of prompt.c file. This flaw allows an attacker to perform code execution if they control a command output inside the prompt, as stated by a %F%K argument. This occurs because of recursive PROMPT_SUBST expansion."], "name": "CVE-2021-45444", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "zsh", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "zsh", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "zsh", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2022-02-12T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-45444\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-45444\nhttps://www.zsh.org/mla/announce/msg00133.html"], "statement": "Red Hat Enterprise Linux 6 and 7 are not affected, because the vulnerable function is not present in the code-base.\nRed Hat Product Security has rated this issue as having a Moderate security impact, and the issue is not currently planned to be addressed in future updates for Red Hat Enterprise Linux 6 and 7, hence, marked as Out-of-Support-Scope. \nFor additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/ and Red Hat Enterprise Linux Life Cycle & Updates Policy: https://access.redhat.com/support/policy/updates/errata/.", "threat_severity": "Moderate"}

{}