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Synthesis of the vulnerability 
An attacker can transmit malicious XML data via Nokogiri::XML::Schema() to Nokogiri, in order to read a file, scan sites, or trigger a denial of service.
 Impacted products: Debian, openSUSE Leap, SLES.
Severity of this bulletin: 2/4.
Creation date: 01/02/2021.
Références of this threat: CVE-2020-26247, DLA-2678-1, openSUSE-SU-2021:0237-1, SUSE-SU-2021:0251-1, VIGILANCE-VUL-34449.
Description of the vulnerability 
An attacker can transmit malicious XML data via Nokogiri::XML::Schema() to Nokogiri, in order to read a file, scan sites, or trigger a denial of service.
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This weakness announce impacts software or systems such as Debian, openSUSE Leap, SLES.
Our Vigil@nce team determined that the severity of this vulnerability alert is medium.
The trust level is of type confirmed by the editor, with an origin of document.
An attacker with a expert ability can exploit this computer threat announce.
Solutions for this threat 
Debian 9: new ruby-nokogiri packages.
New packages are available:
Debian 9: ruby-nokogiri 1.6.8.1-1+deb9u1
openSUSE Leap 15.2: new rubygem-nokogiri packages.
New packages are available:
openSUSE Leap 15.2: ruby2.5-rubygem-nokogiri 1.8.5-lp152.4.3.1
SUSE LE 15 RTM-SP2: new rubygem-nokogiri packages.
New packages are available:
SUSE LE 15 RTM: ruby2.5-rubygem-nokogiri 1.8.5-3.6.1
SUSE LE 15 SP1: ruby2.5-rubygem-nokogiri 1.8.5-3.6.1
SUSE LE 15 SP2: ruby2.5-rubygem-nokogiri 1.8.5-3.6.1
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)
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