Vulnerability identifier: #VU32048
Vulnerability risk: High
CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-119
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Libxml2
Universal components / Libraries /
Libraries used by multiple products
Vendor: Gnome Development Team
Description
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a '%' character in a DTD name.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Libxml2: 2.9.0 - 2.9.4-16-g0741801
External links
http://xmlsoft.org/news.html
http://bugzilla.gnome.org/show_bug.cgi?id=766956
http://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3
http://lists.debian.org/debian-lts-announce/2017/11/msg00041.html
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.