glsa-202008-09.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="202008-09">
  <title>Shadow: Privilege escalation</title>
  <synopsis>Multiple Shadow utilities were installed with setuid permissions,
    allowing possible root privilege escalation.
  </synopsis>
  <product type="ebuild">shadow</product>
  <announced>2020-08-25</announced>
  <revised count="1">2020-08-25</revised>
  <bug>702252</bug>
  <access>local</access>
  <affected>
    <package name="sys-apps/shadow" auto="yes" arch="*">
      <unaffected range="ge">4.8-r3</unaffected>
      <vulnerable range="lt">4.8-r3</vulnerable>
    </package>
  </affected>
  <background>
    <p>Shadow is a set of tools to deal with user accounts.</p>
  </background>
  <description>
    <p>When Shadow was installed with the PAM use flag, setuid binaries
      provided by Shadow were not properly restricted.
    </p>
  </description>
  <impact type="high">
    <p>A local attacker could escalate privileges to root.</p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All Shadow users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=sys-apps/shadow-4.8-r3"
    </code>
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2019-19882">CVE-2019-19882</uri>
    <uri link="https://github.com/shadow-maint/shadow/pull/199">Upstream
      mitigation
    </uri>
  </references>
  <metadata tag="requester" timestamp="2020-08-24T00:55:20Z">sam_c</metadata>
  <metadata tag="submitter" timestamp="2020-08-25T12:51:43Z">sam_c</metadata>
</glsa>