metadata/glsa/glsa-201903-05.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
50

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="201903-05">
  <title>Tar: Denial of service</title>
  <synopsis>A vulnerability in Tar could led to a Denial of Service condition.</synopsis>
  <product type="ebuild">tar</product>
  <announced>2019-03-10</announced>
  <revised count="1">2019-03-10</revised>
  <bug>674210</bug>
  <access>local</access>
  <affected>
    <package name="app-arch/tar" auto="yes" arch="*">
      <unaffected range="ge">1.30-r1</unaffected>
      <vulnerable range="lt">1.30-r1</vulnerable>
    </package>
  </affected>
  <background>
    <p>The Tar program provides the ability to create and manipulate tar
      archives.
    </p>
  </background>
  <description>
    <p>The sparse_dump_region function in sparse.c file in Tar allows an
      infinite loop using the --sparse option.
    </p>
  </description>
  <impact type="normal">
    <p>A local attacker could cause a Denial of Service condition by modifying
      a file that is supposed to be archived by a different user’s process
      (e.g., a system backup running as root).
    </p>
  </impact>
  <workaround>
    <p>There is no known workaround at this time.</p>
  </workaround>
  <resolution>
    <p>All Tar users should upgrade to the latest version:</p>
    
    <code>
      # emerge --sync
      # emerge --ask --oneshot --verbose "&gt;=app-arch/tar-1.30-r1"
    </code>
    
  </resolution>
  <references>
    <uri link="https://nvd.nist.gov/vuln/detail/CVE-2018-20482">CVE-2018-20482</uri>
  </references>
  <metadata tag="requester" timestamp="2019-03-10T16:20:01Z">Zlogene</metadata>
  <metadata tag="submitter" timestamp="2019-03-10T20:04:34Z">Zlogene</metadata>
</glsa>