CVE-2013-5018

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.

CVSS v2.0 4.3 MEDIUM

4.3^/10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:M/Au:N/C:N/I:N/A:P

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
http://lists.opensuse.org/opensuse-updates/2013-08/msg00021.html
http://strongswan.org/blog/2013/08/01/strongswan-denial-of-service-vulnerability-%28cve-2013-5018%29.html	Vendor Advisory
http://secunia.com/advisories/54524	Vendor Advisory
http://strongswan.org/blog/2013/08/01/strongswan-5.1.0-released.html	Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2013-08/msg00022.html
http://secunia.com/advisories/54315	Vendor Advisory
http://lists.opensuse.org/opensuse-updates/2013-08/msg00050.html
https://lists.strongswan.org/pipermail/users/2013-July/009540.html	Exploit
http://www.securityfocus.com/bid/61564

Configurations

Configuration 1 (hide)

cpe:2.3:a:strongswan:strongswan:4.1.11:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:a:strongswan:strongswan:5.0.2:::::::*
	cpe:2.3:a:strongswan:strongswan:5.0.1:::::::*
	cpe:2.3:a:strongswan:strongswan:5.0.3:::::::*
	cpe:2.3:a:strongswan:strongswan:5.0.4:::::::*
	cpe:2.3:a:strongswan:strongswan:5.0.0:::::::*

Configuration 3 (hide)

OR	cpe:2.3:o:opensuse:opensuse:12.2:::::::*
	cpe:2.3:o:opensuse:opensuse:12.3:::::::*
	cpe:2.3:o:opensuse:opensuse:11.4:::::::*

Information

Published : 2013-08-28 16:55

Updated : 2018-10-30 09:27

NVD link : CVE-2013-5018

Mitre link : CVE-2013-5018

JSON object : View

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

Products Affected

strongswan

strongswan

opensuse

opensuse

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "http://lists.opensuse.org/opensuse-updates/2013-08/msg00021.html", "name": "openSUSE-SU-2013:1332", "tags": [], "refsource": "SUSE"}, {"url": "http://strongswan.org/blog/2013/08/01/strongswan-denial-of-service-vulnerability-%28cve-2013-5018%29.html", "name": "http://strongswan.org/blog/2013/08/01/strongswan-denial-of-service-vulnerability-%28cve-2013-5018%29.html", "tags": ["Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "http://secunia.com/advisories/54524", "name": "54524", "tags": ["Vendor Advisory"], "refsource": "SECUNIA"}, {"url": "http://strongswan.org/blog/2013/08/01/strongswan-5.1.0-released.html", "name": "http://strongswan.org/blog/2013/08/01/strongswan-5.1.0-released.html", "tags": ["Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "http://lists.opensuse.org/opensuse-updates/2013-08/msg00022.html", "name": "openSUSE-SU-2013:1333", "tags": [], "refsource": "SUSE"}, {"url": "http://secunia.com/advisories/54315", "name": "54315", "tags": ["Vendor Advisory"], "refsource": "SECUNIA"}, {"url": "http://lists.opensuse.org/opensuse-updates/2013-08/msg00050.html", "name": "openSUSE-SU-2013:1372", "tags": [], "refsource": "SUSE"}, {"url": "https://lists.strongswan.org/pipermail/users/2013-July/009540.html", "name": "[Users] 20130729 [strongSwan] charon crash right after xauth+rsa client connects (strongswan-5.0.4, ubuntu 12.04)", "tags": ["Exploit"], "refsource": "MLIST"}, {"url": "http://www.securityfocus.com/bid/61564", "name": "61564", "tags": [], "refsource": "BID"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-119"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2013-5018", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 4.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "severity": "MEDIUM", "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}}, "publishedDate": "2013-08-28T23:55Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:strongswan:strongswan:4.1.11:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:strongswan:strongswan:5.0.2:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:strongswan:strongswan:5.0.1:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:strongswan:strongswan:5.0.3:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:strongswan:strongswan:5.0.4:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:strongswan:strongswan:5.0.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:opensuse:opensuse:12.2:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2018-10-30T16:27Z"}

4.3 /10