#VU42119 Resource exhaustion in expat - CVE-2013-0340

Vulnerability identifier: #VU42119

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2013-0340

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
expat
Universal components / Libraries / Libraries used by multiple products

Vendor: libexpat.org

Description

The vulnerability allows remote attackers to cause a denial of service attack.

The vulnerability exists due to insufficient validation of user-supplied input within the expat library, when processing XML files. A remote attacker can pass specially crafted XML content to the affected library and perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

expat: 1.95.1 - 2.0.1

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External links
https://openwall.com/lists/oss-security/2013/02/22/3
https://securitytracker.com/id?1028213
https://www.openwall.com/lists/oss-security/2013/04/12/6
https://security.gentoo.org/glsa/201701-21

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.