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"cpe:2.3:a:perl:perl:5.14.0:rc2:*:*:*:*:*:*", "matchCriteriaId": "D94BF151-572F-4C50-8E47-9B8BCDD16A77", "vulnerable": true}, {"criteria": "cpe:2.3:a:perl:perl:5.14.0:rc3:*:*:*:*:*:*", "matchCriteriaId": "5114F054-E5AF-4905-83DD-459E1D56B5DE", "vulnerable": true}, {"criteria": "cpe:2.3:a:perl:perl:5.14.1:*:*:*:*:*:*:*", "matchCriteriaId": "91B91435-67DA-49E1-A37F-7839728F17BC", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Off-by-one error in the decode_xs function in Unicode/Unicode.xs in the Encode module before 2.44, as used in Perl before 5.15.6, might allow context-dependent attackers to cause a denial of service (memory corruption) via a crafted Unicode string, which triggers a heap-based buffer overflow."}, {"lang": "es", "value": "Error \"Off-by-one\" en la funci\u00f3n decode_xs en Unicode/Unicode.xs en el m\u00f3dulo Encode anterior a v2.44, utilizado en Perl anterior a v5.15.6 , podr\u00eda permitir a atacantes dependientes de contexto causar una denegaci\u00f3n de servicio (corrupci\u00f3n de memoria) a trav\u00e9s de un cadena de Unicode especialmente creada, provocando un desbordamiento de b\u00fafer basado en memoria din\u00e1mica (heap)."}], "id": "CVE-2011-2939", "lastModified": "2025-04-11T00:51:21.963", "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": false}]}, "published": "2012-01-13T18:55:02.987", "references": [{"source": "secalert@redhat.com", "url": "http://cpansearch.perl.org/src/FLORA/perl-5.14.2/pod/perldelta.pod"}, {"source": "secalert@redhat.com", "tags": ["Exploit", "Patch"], "url": "http://perl5.git.perl.org/perl.git/commitdiff/e46d973584785af1f445c4dedbee4243419cb860#patch5"}, {"source": "secalert@redhat.com", "url": "http://search.cpan.org/~flora/perl-5.14.2/pod/perldelta.pod#Encode_decode_xs_n-byte_heap-overflow_%28CVE-2011-2939%29"}, {"source": "secalert@redhat.com", "url": "http://secunia.com/advisories/46172"}, {"source": "secalert@redhat.com", "url": "http://secunia.com/advisories/46989"}, {"source": "secalert@redhat.com", "url": "http://secunia.com/advisories/51457"}, {"source": "secalert@redhat.com", "url": "http://secunia.com/advisories/55314"}, {"source": "secalert@redhat.com", "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2012:008"}, {"source": "secalert@redhat.com", "url": "http://www.openwall.com/lists/oss-security/2011/08/18/8"}, {"source": "secalert@redhat.com", "tags": ["Patch"], "url": "http://www.openwall.com/lists/oss-security/2011/08/19/17"}, {"source": "secalert@redhat.com", "url": "http://www.redhat.com/support/errata/RHSA-2011-1424.html"}, {"source": "secalert@redhat.com", "url": "http://www.securityfocus.com/bid/49858"}, {"source": "secalert@redhat.com", "url": "http://www.ubuntu.com/usn/USN-1643-1"}, {"source": "secalert@redhat.com", "tags": ["Patch"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=731246"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://cpansearch.perl.org/src/FLORA/perl-5.14.2/pod/perldelta.pod"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Patch"], "url": "http://perl5.git.perl.org/perl.git/commitdiff/e46d973584785af1f445c4dedbee4243419cb860#patch5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://search.cpan.org/~flora/perl-5.14.2/pod/perldelta.pod#Encode_decode_xs_n-byte_heap-overflow_%28CVE-2011-2939%29"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://secunia.com/advisories/46172"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://secunia.com/advisories/46989"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://secunia.com/advisories/51457"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://secunia.com/advisories/55314"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2012:008"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2011/08/18/8"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "http://www.openwall.com/lists/oss-security/2011/08/19/17"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.redhat.com/support/errata/RHSA-2011-1424.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.securityfocus.com/bid/49858"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.ubuntu.com/usn/USN-1643-1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=731246"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-189"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2011:1424", "cpe": "cpe:/o:redhat:enterprise_linux:6", "package": "perl-4:5.10.1-119.el6_1.1", "product_name": "Red Hat Enterprise Linux 6", "release_date": "2011-11-03T00:00:00Z"}], "bugzilla": {"description": "Perl decode_xs heap-based buffer overflow", "id": "731246", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=731246"}, "csaw": false, "cvss": {"cvss_base_score": "5.1", "cvss_scoring_vector": "AV:N/AC:H/Au:N/C:P/I:P/A:P", "status": "verified"}, "cwe": "CWE-122", "details": ["Off-by-one error in the decode_xs function in Unicode/Unicode.xs in the Encode module before 2.44, as used in Perl before 5.15.6, might allow context-dependent attackers to cause a denial of service (memory corruption) via a crafted Unicode string, which triggers a heap-based buffer overflow."], "name": "CVE-2011-2939", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:4", "fix_state": "Affected", "package_name": "perl", "product_name": "Red Hat Enterprise Linux 4"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Affected", "package_name": "perl", "product_name": "Red Hat Enterprise Linux 5"}], "public_date": "2011-08-09T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2011-2939\nhttps://nvd.nist.gov/vuln/detail/CVE-2011-2939"], "threat_severity": "Moderate"}