CVE-2018-20969

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{"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:gnu:patch:*:*:*:*:*:*:*:*", "matchCriteriaId": "0324E14E-0A19-4B70-B316-19577201C5D8", "versionEndIncluding": "2.7.6", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "do_ed_script in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character. NOTE: this is the same commit as for CVE-2019-13638, but the ! syntax is specific to ed, and is unrelated to a shell metacharacter."}, {"lang": "es", "value": "La funci\u00f3n do_ed_script en el archivo pch.c en el parche GNU versiones hasta 2.7.6 no bloquea cadenas que comienzan con un car\u00e1cter !. NOTA: este es el mismo commit para CVE-2019-13638, pero la sintaxis ! es espec\u00edfica para ed y no est\u00e1 relacionada con un metacar\u00e1cter de shell."}], "id": "CVE-2018-20969", "lastModified": "2026-06-17T01:53:50.847", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 9.3, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2019-08-16T04:15:09.860", "references": [{"source": "cve@mitre.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/154124/GNU-patch-Command-Injection-Directory-Traversal.html"}, {"source": "cve@mitre.org", "url": "https://access.redhat.com/errata/RHSA-2019:2798"}, {"source": "cve@mitre.org", "url": "https://access.redhat.com/errata/RHSA-2019:2964"}, {"source": "cve@mitre.org", "url": "https://access.redhat.com/errata/RHSA-2019:3757"}, {"source": "cve@mitre.org", "url": "https://access.redhat.com/errata/RHSA-2019:3758"}, {"source": "cve@mitre.org", "url": "https://access.redhat.com/errata/RHSA-2019:4061"}, {"source": "cve@mitre.org", "tags": ["Patch", "Vendor Advisory"], "url": "https://git.savannah.gnu.org/cgit/patch.git/commit/?id=3fcd042d26d70856e826a42b5f93dc4854d80bf0"}, {"source": "cve@mitre.org", "url": "https://github.com/irsl/gnu-patch-vulnerabilities"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Mailing List", "Patch", "Third Party Advisory"], "url": "https://seclists.org/bugtraq/2019/Aug/29"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://packetstormsecurity.com/files/154124/GNU-patch-Command-Injection-Directory-Traversal.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://access.redhat.com/errata/RHSA-2019:2798"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://access.redhat.com/errata/RHSA-2019:2964"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://access.redhat.com/errata/RHSA-2019:3757"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://access.redhat.com/errata/RHSA-2019:3758"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://access.redhat.com/errata/RHSA-2019:4061"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://git.savannah.gnu.org/cgit/patch.git/commit/?id=3fcd042d26d70856e826a42b5f93dc4854d80bf0"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://github.com/irsl/gnu-patch-vulnerabilities"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Mailing List", "Patch", "Third Party Advisory"], "url": "https://seclists.org/bugtraq/2019/Aug/29"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-78"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2019:2964", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "patch-0:2.7.1-12.el7_7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2019-10-03T00:00:00Z"}, {"advisory": "RHSA-2019:4061", "cpe": "cpe:/o:redhat:rhel_aus:7.4", "package": "patch-0:2.7.1-11.el7_4", "product_name": "Red Hat Enterprise Linux 7.4 Advanced Update Support", "release_date": "2019-12-03T00:00:00Z"}, {"advisory": "RHSA-2019:4061", "cpe": "cpe:/o:redhat:rhel_tus:7.4", "package": "patch-0:2.7.1-11.el7_4", "product_name": "Red Hat Enterprise Linux 7.4 Telco Extended Update Support", "release_date": "2019-12-03T00:00:00Z"}, {"advisory": "RHSA-2019:4061", "cpe": "cpe:/o:redhat:rhel_e4s:7.4", "package": "patch-0:2.7.1-11.el7_4", "product_name": "Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions", "release_date": "2019-12-03T00:00:00Z"}, {"advisory": "RHSA-2019:3757", "cpe": "cpe:/o:redhat:rhel_eus:7.5", "package": "patch-0:2.7.1-11.el7_5", "product_name": "Red Hat Enterprise Linux 7.5 Extended Update Support", "release_date": "2019-11-06T00:00:00Z"}, {"advisory": "RHSA-2019:3758", "cpe": "cpe:/o:redhat:rhel_eus:7.6", "package": "patch-0:2.7.1-11.el7_6", "product_name": "Red Hat Enterprise Linux 7.6 Extended Update Support", "release_date": "2019-11-06T00:00:00Z"}, {"advisory": "RHSA-2019:2798", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "patch-0:2.7.6-9.el8_0", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2019-09-19T00:00:00Z"}], "bugzilla": {"description": "patch: do_ed_script in pch.c does not block strings beginning with a ! character", "id": "1746672", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1746672"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "verified"}, "cwe": "CWE-78", "details": ["do_ed_script in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character. NOTE: this is the same commit as for CVE-2019-13638, but the ! syntax is specific to ed, and is unrelated to a shell metacharacter.", "A flaw was found in GNU patch through version 2.7.6. Strings beginning with a exclamation mark are not blocked by default. When ed receives an exclamation mark-prefixed command line argument, the argument is executed as a shell command. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."], "name": "CVE-2018-20969", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Out of support scope", "package_name": "patch", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "patch", "product_name": "Red Hat Enterprise Linux 6"}], "public_date": "2019-08-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2018-20969\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-20969\nhttps://seclists.org/bugtraq/2019/Aug/29"], "threat_severity": "Important"}

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