Vulnerability identifier: #VU33115
Vulnerability risk: Medium
CVSSv3.1: 4.6 [CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
expat
Universal components / Libraries /
Libraries used by multiple products
Vendor: libexpat.org
Description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
readfilemap.c in expat before 2.1.0 allows context-dependent attackers to cause a denial of service (file descriptor consumption) via a large number of crafted XML files.
Mitigation
Install update from vendor's website.
Vulnerable software versions
expat: 2.0.0 - 2.0.1
External links
http://expat.cvs.sourceforge.net/viewvc/expat/expat/xmlwf/readfilemap.c?r1=1.14&r2=1.15
http://lists.apple.com/archives/security-announce/2015/Dec/msg00005.html
http://sourceforge.net/projects/expat/files/expat/2.1.0/
http://sourceforge.net/tracker/?func=detail&aid=2895533&group_id=10127&atid=110127
http://trac.wxwidgets.org/ticket/11194
http://trac.wxwidgets.org/ticket/11432
http://www.securityfocus.com/bid/52379
http://www.securitytracker.com/id/1034344
http://support.apple.com/HT205637
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.