summaryrefslogtreecommitdiff
blob: 306e4ba70b0e5d2b6f49c3f6155f472c4eabae4a (plain)
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
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
<glsa id="200609-15">
  <title>GnuTLS: RSA Signature Forgery</title>
  <synopsis>
    GnuTLS fails to handle excess data which could allow an attacker to forge a
    PKCS #1 v1.5 signature.
  </synopsis>
  <product type="ebuild">gnutls</product>
  <announced>2006-09-26</announced>
  <revised count="01">2006-09-26</revised>
  <bug>147682</bug>
  <access>remote</access>
  <affected>
    <package name="net-libs/gnutls" auto="yes" arch="*">
      <unaffected range="ge">1.4.4</unaffected>
      <vulnerable range="lt">1.4.4</vulnerable>
    </package>
  </affected>
  <background>
    <p>
    GnuTLS is an implementation of SSL 3.0 and TLS 1.0.
    </p>
  </background>
  <description>
    <p>
    verify.c fails to properly handle excess data in
    digestAlgorithm.parameters field while generating a hash when using an
    RSA key with exponent 3. RSA keys that use exponent 3 are commonplace.
    </p>
  </description>
  <impact type="normal">
    <p>
    Remote attackers could forge PKCS #1 v1.5 signatures that are signed
    with an RSA key, preventing GnuTLS from correctly verifying X.509 and
    other certificates that use PKCS.
    </p>
  </impact>
  <workaround>
    <p>
    There is no known workaround at this time.
    </p>
  </workaround>
  <resolution>
    <p>
    All GnuTLS users should update both packages:
    </p>
    <code>
    # emerge --sync
    # emerge --update --ask --verbose "&gt;=net-libs/gnutls-1.4.4"</code>
  </resolution>
  <references>
    <uri link="https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4790">CVE-2006-4790</uri>
  </references>
  <metadata tag="requester" timestamp="2006-09-23T06:35:02Z">
    jaervosz
  </metadata>
  <metadata tag="submitter" timestamp="2006-09-25T13:07:32Z">
    hlieberman
  </metadata>
  <metadata tag="bugReady" timestamp="2006-09-25T18:24:37Z">
    falco
  </metadata>
</glsa>