glsa-200506-08.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
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200506-08">
  <title>GNU shtool, ocaml-mysql: Insecure temporary file creation</title>
  <synopsis>
    GNU shtool and ocaml-mysql are vulnerable to symlink attacks, potentially
    allowing a local user to overwrite arbitrary files.
  </synopsis>
  <product type="ebuild">GNU shtool</product>
  <announced>2005-06-11</announced>
  <revised count="01">2005-06-11</revised>
  <bug>93782</bug>
  <bug>93784</bug>
  <access>local</access>
  <affected>
    <package name="dev-util/shtool" auto="yes" arch="*">
      <unaffected range="ge">2.0.1-r2</unaffected>
      <vulnerable range="lt">2.0.1-r2</vulnerable>
    </package>
    <package name="dev-ml/ocaml-mysql" auto="yes" arch="*">
      <unaffected range="ge">1.0.3-r1</unaffected>
      <vulnerable range="lt">1.0.3-r1</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    GNU shtool is a compilation of small shell scripts into a single
    shell tool. The ocaml-mysql package includes the GNU shtool code.
    </p>
  </background>
  <description>
    <p>
    Eric Romang has discovered that GNU shtool insecurely creates
    temporary files with predictable filenames (CAN-2005-1751). On closer
    inspection, Gentoo Security discovered that the shtool temporary file,
    once created, was being reused insecurely (CAN-2005-1759).
    </p>
  </description>
  <impact type="normal">
    <p>
    A local attacker could create symbolic links in the temporary
    files directory, pointing to a valid file somewhere on the filesystem.
    When a GNU shtool script is executed, this would result in the file
    being overwritten with the rights of the user running the script, which
    could be the root user.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All GNU shtool users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=dev-util/shtool-2.0.1-r2"</code>
    <p>
    All ocaml-mysql users should upgrade to the latest version:
    </p>
    <code>
    # emerge --sync
    # emerge --ask --oneshot --verbose "&gt;=dev-ml/ocaml-mysql-1.0.3-r1"</code>
  </resolution>
  <references>
    <uri link="https://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1751">CAN-2005-1751</uri>
    <uri link="https://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1759">CAN-2005-1759</uri>
  </references>
  <metadata tag="requester" timestamp="2005-05-27T16:05:53Z">
    vorlon078
  </metadata>
  <metadata tag="submitter" timestamp="2005-05-28T21:16:10Z">
    formula7
  </metadata>
  <metadata tag="bugReady" timestamp="2005-06-10T15:51:35Z">
    koon
  </metadata>
</glsa>