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4.3
MEDIUM CVSS 2.0
CVE-2013-5018
StrongSwan X.509 ASN.1 Length Validation Vulnerability
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.

INFO

Published Date :

Aug. 28, 2013, 11:55 p.m.

Last Modified :

April 11, 2025, 12:51 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2013-5018 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Opensuse opensuse
1 Strongswan strongswan
: Total Affected Vendor : 2 | Products : 2
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 MEDIUM [email protected]
Solution
To address the vulnerability, update the strongSwan packages to the latest version.
  • Update the affected strongSwan package to the latest version.
  • If needed, consult vendor documentation or use your system's package manager to update.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2013-5018.

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

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2013-5018 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2013-5018 weaknesses.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-100: Overflow Buffers Overflow Buffers CAPEC-123: Buffer Manipulation Buffer Manipulation

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2013-5018 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2013-5018 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-updates/2013-08/msg00021.html
    Added Reference http://lists.opensuse.org/opensuse-updates/2013-08/msg00022.html
    Added Reference http://lists.opensuse.org/opensuse-updates/2013-08/msg00050.html
    Added Reference http://secunia.com/advisories/54315
    Added Reference http://secunia.com/advisories/54524
    Added Reference http://strongswan.org/blog/2013/08/01/strongswan-5.1.0-released.html
    Added Reference http://strongswan.org/blog/2013/08/01/strongswan-denial-of-service-vulnerability-%28cve-2013-5018%29.html
    Added Reference http://www.securityfocus.com/bid/61564
    Added Reference https://lists.strongswan.org/pipermail/users/2013-July/009540.html
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CPE Deprecation Remap by [email protected]

    Oct. 30, 2018

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:novell:opensuse:12.3:*:*:*:*:*:*:* OR *cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 30, 2018

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:novell:opensuse:12.2:*:*:*:*:*:*:* OR *cpe:2.3:o:opensuse:opensuse:12.2:*:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Oct. 30, 2018

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:novell:opensuse:11.4:*:*:*:*:*:*:* OR *cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Nov. 28, 2016

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/61564 [No Types Assigned]
  • Initial Analysis by [email protected]

    Aug. 28, 2013

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 4.3
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

2.90 }} -5.38%

score

0.85121

percentile