CVE-2018-20796

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2019-02-25T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(\\227|)(\\\\1\\\\1|t1|\\\\\\2537)+' in grep."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2019-11-05T20:06:27.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://security.netapp.com/advisory/ntap-20190315-0002/"}, {"tags": ["x_refsource_MISC"], "url": "https://lists.gnu.org/archive/html/bug-gnulib/2019-01/msg00108.html"}, {"name": "107160", "tags": ["vdb-entry", "x_refsource_BID"], "url": "http://www.securityfocus.com/bid/107160"}, {"tags": ["x_refsource_MISC"], "url": "https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34141"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://support.f5.com/csp/article/K26346590?utm_source=f5support&amp%3Butm_medium=RSS"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2018-20796", "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 the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(\\227|)(\\\\1\\\\1|t1|\\\\\\2537)+' in grep."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://security.netapp.com/advisory/ntap-20190315-0002/", "refsource": "CONFIRM", "url": "https://security.netapp.com/advisory/ntap-20190315-0002/"}, {"name": "https://lists.gnu.org/archive/html/bug-gnulib/2019-01/msg00108.html", "refsource": "MISC", "url": "https://lists.gnu.org/archive/html/bug-gnulib/2019-01/msg00108.html"}, {"name": "107160", "refsource": "BID", "url": "http://www.securityfocus.com/bid/107160"}, {"name": "https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34141", "refsource": "MISC", "url": "https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34141"}, {"name": "https://support.f5.com/csp/article/K26346590?utm_source=f5support&utm_medium=RSS", "refsource": "CONFIRM", "url": "https://support.f5.com/csp/article/K26346590?utm_source=f5support&utm_medium=RSS"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-05T12:12:28.627Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://security.netapp.com/advisory/ntap-20190315-0002/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://lists.gnu.org/archive/html/bug-gnulib/2019-01/msg00108.html"}, {"name": "107160", "tags": ["vdb-entry", "x_refsource_BID", "x_transferred"], "url": "http://www.securityfocus.com/bid/107160"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34141"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://support.f5.com/csp/article/K26346590?utm_source=f5support&amp%3Butm_medium=RSS"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2018-20796", "datePublished": "2019-02-26T02:00:00.000Z", "dateReserved": "2019-02-25T00:00:00.000Z", "dateUpdated": "2024-08-05T12:12:28.627Z", "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:gnu:glibc:*:*:*:*:*:*:*:*", "matchCriteriaId": "60F1CB2F-5B42-4134-8328-480F5F07932D", "versionEndIncluding": "2.29", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:netapp:cloud_backup:*:*:*:*:*:*:*:*", "matchCriteriaId": "4433FEA1-564D-4592-BB12-1C194B543928", "vulnerable": true}, {"criteria": "cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*", "matchCriteriaId": "E7CF3019-975D-40BB-A8A4-894E62BD3797", "vulnerable": true}, {"criteria": "cpe:2.3:a:netapp:steelstore_cloud_integrated_storage:-:*:*:*:*:*:*:*", "matchCriteriaId": "E94F7F59-1785-493F-91A7-5F5EA5E87E4D", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(\\227|)(\\\\1\\\\1|t1|\\\\\\2537)+' in grep."}, {"lang": "es", "value": "En la biblioteca GNU C (tambi\u00e9n conocida como glibc o libc6), hasta la versi\u00f3n 2.29, check_dst_limits_calc_pos_1 en posix/regexec.c tiene una recursi\u00f3n no controlada, tal y como queda demostrado con \"(\\227|)(\\\\1\\\\1|t1|\\\\\\2537)+\" en grep."}], "id": "CVE-2018-20796", "lastModified": "2026-06-17T01:53:29.553", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2019-02-26T02:29:00.450", "references": [{"source": "cve@mitre.org", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/107160"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Mailing List", "Vendor Advisory"], "url": "https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34141"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Mailing List", "Vendor Advisory"], "url": "https://lists.gnu.org/archive/html/bug-gnulib/2019-01/msg00108.html"}, {"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20190315-0002/"}, {"source": "cve@mitre.org", "url": "https://support.f5.com/csp/article/K26346590?utm_source=f5support&amp%3Butm_medium=RSS"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "VDB Entry"], "url": "http://www.securityfocus.com/bid/107160"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Mailing List", "Vendor Advisory"], "url": "https://debbugs.gnu.org/cgi/bugreport.cgi?bug=34141"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Mailing List", "Vendor Advisory"], "url": "https://lists.gnu.org/archive/html/bug-gnulib/2019-01/msg00108.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20190315-0002/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://support.f5.com/csp/article/K26346590?utm_source=f5support&amp%3Butm_medium=RSS"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-674"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "glibc: uncontrolled recursion in function check_dst_limits_calc_pos_1 in posix/regexec.c", "id": "1683150", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1683150"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-674", "details": ["In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(\\227|)(\\\\1\\\\1|t1|\\\\\\2537)+' in grep."], "name": "CVE-2018-20796", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "glibc", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "glibc", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "glibc", "product_name": "Red Hat Enterprise Linux 8"}], "public_date": "2019-01-20T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2018-20796\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-20796"], "statement": "The regular expression compiler in glibc is only supposed to be exposed to trusted content, therefore this flaw is not classified as a security vulnerability.", "threat_severity": "Moderate"}

{}