glsa-202105-25.xml


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="202105-25">
  <title>OpenVPN: Authentication bypass</title>
  <synopsis>A vulnerability has been found in OpenVPN, allowing attackers to
    bypass the authentication process.
  </synopsis>
  <product type="ebuild">openvpn</product>
  <announced>2021-05-26</announced>
  <revised count="1">2021-05-26</revised>
  <bug>785115</bug>
  <access>remote</access>
  <affected>
    <package name="net-vpn/openvpn" auto="yes" arch="*">
      <unaffected range="ge">2.5.2</unaffected>
      <vulnerable range="lt">2.5.2</vulnerable>
    </package>
  </affected>
  <background>
    <p>OpenVPN is a multi-platform, full-featured SSL VPN solution.</p>
  </background>
  <description>
    <p>It was discovered that OpenVPN incorrectly handled deferred
      authentication.
    </p>
  </description>
  <impact type="normal">
    <p>A remote attacker could bypass authentication and access control channel
      data and trigger further information leaks.
    </p>
  </impact>
  <workaround>
    <p>Configure OpenVPN server to not use deferred authentication.</p>
  </workaround>
  <resolution>
    <p>All OpenVPN users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=net-vpn/openvpn-2.5.2"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2020-15078">CVE-2020-15078</uri>
  </references>
  <metadata tag="requester" timestamp="2021-05-24T01:22:05Z">whissi</metadata>
  <metadata tag="submitter" timestamp="2021-05-26T09:30:05Z">whissi</metadata>
</glsa>