52 lines
1.8 KiB
XML
52 lines
1.8 KiB
XML
|
<?xml version="1.0" encoding="UTF-8"?>
|
||
|
|
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
|
||
|
|
<glsa id="202007-21">
|
||
|
|
<title>Libreswan: Denial of service</title>
|
||
|
|
<synopsis>A vulnerability in Libreswan could lead to a Denial of Service
|
||
|
|
condition.
|
||
|
|
</synopsis>
|
||
|
|
<product type="ebuild">libreswan</product>
|
||
|
|
<announced>2020-07-27</announced>
|
||
|
|
<revised count="1">2020-07-27</revised>
|
||
|
|
<bug>722696</bug>
|
||
|
|
<access>remote</access>
|
||
|
|
<affected>
|
||
|
|
<package name="net-vpn/libreswan" auto="yes" arch="*">
|
||
|
|
<unaffected range="ge">3.32</unaffected>
|
||
|
|
<vulnerable range="lt">3.32</vulnerable>
|
||
|
|
</package>
|
||
|
|
</affected>
|
||
|
|
<background>
|
||
|
|
<p>Libreswan is a free software implementation of the most widely supported
|
||
|
|
and standarized VPN protocol based on (“IPsec”) and the Internet Key
|
||
|
|
Exchange (“IKE”).
|
||
|
|
</p>
|
||
|
|
</background>
|
||
|
|
<description>
|
||
|
|
<p>As a result of a bug in handling certain bogus encrypted IKEv1, while
|
||
|
|
building a log message that the packet has been dropped, a NULL pointer
|
||
|
|
dereference causes Libreswan to crash and restart when it attempts to log
|
||
|
|
the state name involved.
|
||
|
|
</p>
|
||
|
|
</description>
|
||
|
|
<impact type="normal">
|
||
|
|
<p>An attacker could cause a possible Denial of Service condition.</p>
|
||
|
|
</impact>
|
||
|
|
<workaround>
|
||
|
|
<p>There is no known workaround at this time.</p>
|
||
|
|
</workaround>
|
||
|
|
<resolution>
|
||
|
|
<p>All Libreswan users should upgrade to the latest version:</p>
|
||
|
|
|
||
|
|
<code>
|
||
|
|
# emerge --sync
|
||
|
|
# emerge --ask --oneshot --verbose ">=net-vpn/libreswan-3.32"
|
||
|
|
</code>
|
||
|
|
</resolution>
|
||
|
|
<references>
|
||
|
|
<uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-1763">CVE-2020-1763</uri>
|
||
|
|
</references>
|
||
|
|
<metadata tag="requester" timestamp="2020-07-26T15:11:54Z">sam_c</metadata>
|
||
|
|
<metadata tag="submitter" timestamp="2020-07-27T00:05:28Z">sam_c</metadata>
|
||
|
|
</glsa>
|