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Vulnerability Details : CVE-2006-4790

verify.c in GnuTLS before 1.4.4, when using an RSA key with exponent 3, does not properly handle excess data in the digestAlgorithm.parameters field when generating a hash, which allows remote attackers to forge a PKCS #1 v1.5 signature that is signed by that RSA key and prevents GnuTLS from correctly verifying X.509 and other certificates that use PKCS, a variant of CVE-2006-4339.
Publish Date : 2006-09-14 Last Update Date : 2017-10-10
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID CWE id is not defined for this vulnerability

- Vendor Statements

Red Hat Enterprise Linux 5 is not vulnerable to this issue as it contains a backported patch.
Source: Redhat

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat important 2006-09-13 2006-09-08
If you are a vendor and you have additional data which can be automatically imported into our database, please contact admin @

- Related OVAL Definitions

Title Definition Id Class Family
CVE-2006-4790 unix
RHSA-2006:0680: gnutls security update (Important) oval:com.redhat.rhsa:def:20060680 unix
verify.c in GnuTLS before 1.4.4, when using an RSA key with exponent 3, does not properly handle excess data in the dige... oval:org.mitre.oval:def:9937 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2006-4790

# Product Type Vendor Product Version Update Edition Language
1 Application GNU Gnutls 1.0.17 Version Details Vulnerabilities
2 Application GNU Gnutls 1.0.18 Version Details Vulnerabilities
3 Application GNU Gnutls 1.0.19 Version Details Vulnerabilities
4 Application GNU Gnutls 1.0.20 Version Details Vulnerabilities
5 Application GNU Gnutls 1.0.21 Version Details Vulnerabilities
6 Application GNU Gnutls 1.0.22 Version Details Vulnerabilities
7 Application GNU Gnutls 1.0.23 Version Details Vulnerabilities
8 Application GNU Gnutls 1.0.24 Version Details Vulnerabilities
9 Application GNU Gnutls 1.0.25 Version Details Vulnerabilities
10 Application GNU Gnutls 1.1.14 Version Details Vulnerabilities
11 Application GNU Gnutls 1.1.15 Version Details Vulnerabilities
12 Application GNU Gnutls 1.1.16 Version Details Vulnerabilities
13 Application GNU Gnutls 1.1.17 Version Details Vulnerabilities
14 Application GNU Gnutls 1.1.18 Version Details Vulnerabilities
15 Application GNU Gnutls 1.1.19 Version Details Vulnerabilities
16 Application GNU Gnutls 1.1.20 Version Details Vulnerabilities
17 Application GNU Gnutls 1.1.21 Version Details Vulnerabilities
18 Application GNU Gnutls 1.1.22 Version Details Vulnerabilities
19 Application GNU Gnutls 1.1.23 Version Details Vulnerabilities
20 Application GNU Gnutls 1.2.0 Version Details Vulnerabilities
21 Application GNU Gnutls 1.2.1 Version Details Vulnerabilities
22 Application GNU Gnutls 1.2.2 Version Details Vulnerabilities
23 Application GNU Gnutls 1.2.3 Version Details Vulnerabilities
24 Application GNU Gnutls 1.2.4 Version Details Vulnerabilities
25 Application GNU Gnutls 1.2.5 Version Details Vulnerabilities
26 Application GNU Gnutls 1.2.6 Version Details Vulnerabilities
27 Application GNU Gnutls 1.2.7 Version Details Vulnerabilities
28 Application GNU Gnutls 1.2.8 Version Details Vulnerabilities
29 Application GNU Gnutls Version Details Vulnerabilities
30 Application GNU Gnutls 1.2.9 Version Details Vulnerabilities
31 Application GNU Gnutls 1.2.10 Version Details Vulnerabilities
32 Application GNU Gnutls 1.2.11 Version Details Vulnerabilities
33 Application GNU Gnutls 1.3.0 Version Details Vulnerabilities
34 Application GNU Gnutls 1.3.1 Version Details Vulnerabilities
35 Application GNU Gnutls 1.3.2 Version Details Vulnerabilities
36 Application GNU Gnutls 1.3.3 Version Details Vulnerabilities
37 Application GNU Gnutls 1.3.4 Version Details Vulnerabilities
38 Application GNU Gnutls 1.3.5 Version Details Vulnerabilities
39 Application GNU Gnutls 1.4.0 Version Details Vulnerabilities
40 Application GNU Gnutls 1.4.1 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
GNU Gnutls 40

- References For CVE-2006-4790
VUPEN ADV-2007-2289
XF gnutls-rsakey-security-bypass(28953)
VUPEN ADV-2006-3899
VUPEN ADV-2006-3635
REDHAT RHSA-2006:0680
BID 20027 GNUTLS PKCS RSA Signature Forgery Vulnerability Release Date:2007-06-29
SUSE SUSE-SA:2007:010
SECTRACK 1016844
GENTOO GLSA-200609-15
MLIST [gnutls-dev] 20060908 Variant of Bleichenbacher's crypto 06 rump session attack
MLIST [gnutls-dev] 20060912 Re: Variant of Bleichenbacher's crypto 06 rump session attack

- Metasploit Modules Related To CVE-2006-4790

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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