55 lines
1.9 KiB
XML
55 lines
1.9 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
|
|
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
|
|
<glsa id="201911-01">
|
|
<title>OpenSSH: Integer overflow</title>
|
|
<synopsis>An integer overflow in OpenSSH might allow an attacker to execute
|
|
arbitrary code.
|
|
</synopsis>
|
|
<product type="ebuild">openssh</product>
|
|
<announced>2019-11-07</announced>
|
|
<revised count="1">2019-11-07</revised>
|
|
<bug>697046</bug>
|
|
<access>remote</access>
|
|
<affected>
|
|
<package name="net-misc/openssh" auto="yes" arch="*">
|
|
<unaffected range="ge">8.0_p1-r4</unaffected>
|
|
<vulnerable range="ge">8.0_p1-r2</vulnerable>
|
|
</package>
|
|
</affected>
|
|
<background>
|
|
<p>OpenSSH is a complete SSH protocol implementation that includes SFTP
|
|
client and server support.
|
|
</p>
|
|
</background>
|
|
<description>
|
|
<p>OpenSSH, when built with “xmss” USE flag enabled, has a
|
|
pre-authentication integer overflow if a client or server is configured
|
|
to use a crafted XMSS key.
|
|
</p>
|
|
|
|
<p>NOTE: This USE flag is disabled by default!</p>
|
|
</description>
|
|
<impact type="normal">
|
|
<p>A remote attacker could connect to a vulnerable OpenSSH server using a
|
|
special crafted XMSS key possibly resulting in execution of arbitrary
|
|
code with the privileges of the process or a Denial of Service condition.
|
|
</p>
|
|
</impact>
|
|
<workaround>
|
|
<p>Disable XMSS key type.</p>
|
|
</workaround>
|
|
<resolution>
|
|
<p>All OpenSSH users should upgrade to the latest version:</p>
|
|
|
|
<code>
|
|
# emerge --sync
|
|
# emerge --ask --oneshot --verbose
|
|
">=net-misc/openssh/openssh-8.0_p1-r4"
|
|
</code>
|
|
</resolution>
|
|
<references>
|
|
<uri link="https://nvd.nist.gov/vuln/detail/CVE-2019-16905">CVE-2019-16905</uri>
|
|
</references>
|
|
<metadata tag="requester" timestamp="2019-10-26T14:48:28Z">whissi</metadata>
|
|
<metadata tag="submitter" timestamp="2019-11-07T19:01:23Z">whissi</metadata>
|
|
</glsa>
|