CVE-2009-1415: Double Free

Published Apr 30, 2009
·
Updated

lib/pk-libgcrypt.c in libgnutls in GnuTLS before 2.6.6 does not properly handle invalid DSA signatures, which allows remote attackers to cause a denial of service (application crash) and possibly have unspecified other impact via a malformed DSA key that triggers a (1) free of an uninitialized pointer or (2) double free.

Affected Software

118 affected components
GNU GnuTLS<2.6.6
GNU GnuTLS=2.3.5
GNU GnuTLS=1.6.0
GNU GnuTLS=2.0.0
GNU GnuTLS=1.5.0
GNU GnuTLS=1.2.8
GNU GnuTLS=1.1.14
GNU GnuTLS=2.3.4
GNU GnuTLS=1.7.3
GNU GnuTLS=1.4.1
GNU GnuTLS=1.4.3
GNU GnuTLS=2.6.1
GNU GnuTLS=1.2.11
GNU GnuTLS=1.1.21
GNU GnuTLS=1.7.5
GNU GnuTLS=1.7.11
GNU GnuTLS=1.0.20
GNU GnuTLS=1.2.5
GNU GnuTLS=2.2.4
GNU GnuTLS=1.0.17
GNU GnuTLS=1.2.4
GNU GnuTLS=1.3.1
GNU GnuTLS=1.0.24
GNU GnuTLS=1.7.15
GNU GnuTLS=1.6.1
GNU GnuTLS=1.0.21
GNU GnuTLS=1.4.2
GNU GnuTLS=1.7.8
GNU GnuTLS=1.7.0
GNU GnuTLS=2.1.0
GNU GnuTLS=2.3.1
GNU GnuTLS=1.0.16
GNU GnuTLS=2.2.5
GNU GnuTLS=2.1.1
GNU GnuTLS=2.3.8
GNU GnuTLS=1.7.18
GNU GnuTLS=1.1.20
GNU GnuTLS=2.1.7
GNU GnuTLS=2.1.4
GNU GnuTLS=1.2.10
GNU GnuTLS=1.5.3
GNU GnuTLS=1.1.22
GNU GnuTLS=1.6.3
GNU GnuTLS=2.6.0
GNU GnuTLS=2.1.6
GNU GnuTLS=1.4.5
GNU GnuTLS=1.5.1
GNU GnuTLS=1.4.0
GNU GnuTLS=1.7.4
GNU GnuTLS=1.7.13
GNU GnuTLS=2.3.2
GNU GnuTLS=2.3.9
GNU GnuTLS=2.2.2
GNU GnuTLS=2.2.0
GNU GnuTLS=2.3.11
GNU GnuTLS=1.3.4
GNU GnuTLS=2.6.2
GNU GnuTLS=1.0.19
GNU GnuTLS=1.7.2
GNU GnuTLS=1.2.1
GNU GnuTLS=1.1.19
GNU GnuTLS=2.0.4
GNU GnuTLS=2.6.3
GNU GnuTLS=1.1.18
GNU GnuTLS=1.5.4
GNU GnuTLS=1.7.9
GNU GnuTLS=2.4.0
GNU GnuTLS=2.1.3
GNU GnuTLS=2.4.1
GNU GnuTLS=1.7.10
GNU GnuTLS=1.1.13
GNU GnuTLS=1.2.8.1a1
GNU GnuTLS=2.3.7
GNU GnuTLS=2.0.3
GNU GnuTLS=1.2.2
GNU GnuTLS=1.7.19
GNU GnuTLS=1.5.5
GNU GnuTLS=1.2.0
GNU GnuTLS=1.0.18
GNU GnuTLS=1.2.7
GNU GnuTLS=1.3.2
GNU GnuTLS=1.0.25
GNU GnuTLS=1.1.15
GNU GnuTLS=2.1.2
GNU GnuTLS=1.0.23
GNU GnuTLS=2.4.2
GNU GnuTLS=1.3.0
GNU GnuTLS=1.3.5
GNU GnuTLS=1.7.14
GNU GnuTLS=1.1.23
GNU GnuTLS=1.2.3
GNU GnuTLS=2.6.4
GNU GnuTLS=1.2.6
GNU GnuTLS=2.3.6
GNU GnuTLS=1.2.9
GNU GnuTLS=1.7.17
GNU GnuTLS=2.3.3
GNU GnuTLS=2.1.8
GNU GnuTLS=1.7.7
GNU GnuTLS=2.0.1
GNU GnuTLS=1.7.6
GNU GnuTLS=2.2.1
GNU GnuTLS=2.1.5
GNU GnuTLS=1.7.1
GNU GnuTLS<=2.6.5
GNU GnuTLS=1.5.2
GNU GnuTLS=1.7.16
GNU GnuTLS=1.7.12
GNU GnuTLS=1.1.16
GNU GnuTLS=2.3.10
GNU GnuTLS=1.0.22
GNU GnuTLS=2.0.2
GNU GnuTLS=2.3.0
GNU GnuTLS=1.6.2
GNU GnuTLS=2.2.3
GNU GnuTLS=1.4.4
GNU GnuTLS=1.1.17
GNU GnuTLS=1.3.3

Remediation

Patch Available

http://article.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3515

Event History

Apr 30, 2009
CVE Published
via MITRE·08:00 PM
Data Sourced
via MITRE·08:00 PM
Description
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Frequently Asked Questions

1

What is the severity of CVE-2009-1415?

The severity of CVE-2009-1415 is classified as high due to the potential for denial of service attacks.

2

How do I fix CVE-2009-1415?

To fix CVE-2009-1415, upgrade to GnuTLS version 2.6.6 or later.

3

What types of systems are affected by CVE-2009-1415?

CVE-2009-1415 affects versions of GnuTLS prior to 2.6.6, including those listed from 1.0.0 to 2.6.5.

4

What impact can CVE-2009-1415 have on my systems?

CVE-2009-1415 can lead to an application crash and may expose systems to further vulnerabilities via malformed DSA keys.

5

Is there a workaround for CVE-2009-1415 if I cannot update?

Yes, avoiding the use of DSA signatures or validating inputs can serve as a temporary workaround for CVE-2009-1415.

Company

Resources

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