--- title: "CVE-2013-5018\n | Ubuntu" description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2013-5018?format=md keywords: index, follow --- # CVE-2013-5018 Publication date 28 August 2013 Last updated 24 July 2024 --- Ubuntu priority **Medium** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) Toggle side navigation ## 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 Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | strongswan | 17.04 zesty | Not affected | | 16.10 yakkety | Not affected | | 16.04 LTS xenial | Not affected | | 15.10 wily | Not affected | | 15.04 vivid | Not affected | | 14.10 utopic | Not affected | | 14.04 LTS trusty | Not affected | | 13.10 saucy | Ignored end of life | | 13.04 raring | Ignored end of life | | 12.10 quantal | Ignored end of life | | 12.04 LTS precise | Ignored end of life | | 10.04 LTS lucid | Ignored end of life | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-5018) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2013-5018) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2013-5018) * [Debian](https://security-tracker.debian.org/tracker/CVE-2013-5018) ### Other references *