{"id":"CVE-2013-5018","aliases":["EUVD-2013-4860","GHSA-7xq3-j5px-xf94","SUSE-SU-2015:1227-1","UBUNTU-CVE-2013-5018","openSUSE-SU-2024:10579-1"],"status":"published","title":"The is_asn1 function in strongSwan 4.1.11 through 5.0.4 does not properly validate the return...","description":"The is_asn1 function in strongSwan 4.1.11 through 5.0.4 does not properly validate the return value of the asn1_length function, which allows remote attackers to cause a denial of service (segmentation fault) via a (1) XAuth username, (2) EAP identity, or (3) PEM encoded file that starts with a 0x04, 0x30, or 0x31 character followed by an ASN.1 length value that triggers an integer overflow.","severity":{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02985,"percentile":0.87391,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119"],"published":"2013-08-28T17:18:00Z","modified":"2026-06-16T23:58:15Z","affected":[{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"strongswan","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.3.5-1.1"}]}],"bundled":11}],"products":[{"vendor":"opensuse","product":"opensuse"},{"vendor":"strongswan","product":"strongswan"}],"references":[{"url":"http://secunia.com/advisories/54315","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/61564","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://secunia.com/advisories/54524","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"http://strongswan.org/blog/2013/08/01/strongswan-5.1.0-released.html","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"http://lists.opensuse.org/opensuse-updates/2013-08/msg00022.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred"]},{"url":"http://strongswan.org/blog/2013/08/01/strongswan-denial-of-service-vulnerability-%28cve-2013-5018%29.html","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"http://lists.opensuse.org/opensuse-updates/2013-08/msg00021.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred"]},{"url":"https://lists.strongswan.org/pipermail/users/2013-July/009540.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Exploit"]},{"url":"http://lists.opensuse.org/opensuse-updates/2013-08/msg00050.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-5018"},{"url":"https://github.com/advisories/GHSA-7xq3-j5px-xf94"},{"url":"https://www.suse.com/support/update/announcement/2015/suse-su-20151227-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/815236","tags":["report"]},{"url":"https://bugzilla.suse.com/833278","tags":["report"]},{"url":"https://bugzilla.suse.com/840826","tags":["report"]},{"url":"https://bugzilla.suse.com/847506","tags":["report"]},{"url":"https://bugzilla.suse.com/870572","tags":["report"]},{"url":"https://bugzilla.suse.com/876449","tags":["report"]},{"url":"https://bugzilla.suse.com/933591","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2013-2944","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-5018","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-2338","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-2891","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-4171","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2013-5018","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2013-5018","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2009-0790","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2012-2388","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-6075","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-6076","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2014-9221","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-3991","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-8023","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2013-5018","description":"The is_asn1 function in strongSwan 4.1.11 through 5.0.4 does not properly validate the return value of the asn1_length function, which allows remote attackers to cause a denial of service (segmentation fault) via a (1) XAuth username, (2) EAP identity, or (3) PEM encoded file that starts with a 0x04, 0x30, or 0x31 character followed by an ASN.1 length value that triggers an integer overflow.","status":"published","published":"2013-08-28T17:18:00Z","modified":"2024-08-06T16:59:41.283Z","updated_at":"2026-11-02T14:34:55.508771Z"}],"euvd":[{"id":"EUVD-2013-4860","description":"The is_asn1 function in strongSwan 4.1.11 through 5.0.4 does not properly validate the return value of the asn1_length function, which allows remote attackers to cause a denial of service (segmentation fault) via a (1) XAuth username, (2) EAP identity, or (3) PEM encoded file that starts with a 0x04, 0x30, or 0x31 character followed by an ASN.1 length value that triggers an integer overflow.","status":"published","published":"2013-08-28T17:18:00Z","modified":"2024-08-06T16:59:41Z","updated_at":"2026-11-03T01:56:30.109549Z"}],"ghsa":[{"id":"GHSA-7xq3-j5px-xf94","title":"The is_asn1 function in strongSwan 4.1.11 through 5.0.4 does not properly validate the return...","description":"The is_asn1 function in strongSwan 4.1.11 through 5.0.4 does not properly validate the return value of the asn1_length function, which allows remote attackers to cause a denial of service (segmentation fault) via a (1) XAuth username, (2) EAP identity, or (3) PEM encoded file that starts with a 0x04, 0x30, or 0x31 character followed by an ASN.1 length value that triggers an integer overflow.","status":"published","published":"2022-05-14T02:10:41Z","modified":"2023-02-02T05:05:36Z","cwes":["CWE-119"],"updated_at":"2026-11-02T14:52:08.722601Z"}],"nvd":[{"id":"CVE-2013-5018","description":"The is_asn1 function in strongSwan 4.1.11 through 5.0.4 does not properly validate the return value of the asn1_length function, which allows remote attackers to cause a denial of service (segmentation fault) via a (1) XAuth username, (2) EAP identity, or (3) PEM encoded file that starts with a 0x04, 0x30, or 0x31 character followed by an ASN.1 length value that triggers an integer overflow.","status":"published","published":"2013-08-28T23:55:10.65Z","modified":"2026-06-16T23:58:15.53Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:02:35.248411Z"}],"osv":[{"id":"openSUSE-SU-2024:10579-1","title":"strongswan-5.3.5-1.1 on GA media","description":"These are all security issues fixed in the strongswan-5.3.5-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T04:32:44.74643Z","updated_at":"2026-11-02T16:58:34.487567Z"},{"id":"SUSE-SU-2015:1227-1","title":"Security update for strongswan","description":"\nThis update fixes a NULL ptr dereference (DoS) via ID_DER_ASN1_DN ID \npayloads.\n\nSecurity Issue reference:\n\n    * CVE-2014-2891\n      \u003chttp://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-2891\u003e\n\n","status":"published","published":"2014-05-14T09:26:44Z","modified":"2026-02-04T02:26:22.617312Z","updated_at":"2026-11-02T15:53:43.030986Z"},{"id":"UBUNTU-CVE-2013-5018","description":"The is_asn1 function in strongSwan 4.1.11 through 5.0.4 does not properly validate the return value of the asn1_length function, which allows remote attackers to cause a denial of service (segmentation fault) via a (1) XAuth username, (2) EAP identity, or (3) PEM encoded file that starts with a 0x04, 0x30, or 0x31 character followed by an ASN.1 length value that triggers an integer overflow.","status":"withdrawn","published":"2013-08-28T23:55:00Z","modified":"2025-07-16T08:10:48.119562Z","updated_at":"2026-11-02T15:54:07.421078Z"}]}}