CVE-2006-4790 (GCVE-0-2006-4790)

Vulnerability from cvelistv5 – Published: 2006-09-14 19:00 – Updated: 2024-08-07 19:23
VLAI
Summary
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.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1088 records in the last 180 days details
References
URL Tags
http://secunia.com/advisories/25762 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/22992 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/21937 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/22049 third-party-advisoryx_refsource_SECUNIA
http://securitytracker.com/id?1016844 vdb-entryx_refsource_SECTRACK
http://www.vupen.com/english/advisories/2006/3899 vdb-entryx_refsource_VUPEN
http://www.securityfocus.com/bid/20027 vdb-entryx_refsource_BID
http://www.novell.com/linux/security/advisories/2… vendor-advisoryx_refsource_SUSE
http://www.mandriva.com/security/advisories?name=… vendor-advisoryx_refsource_MANDRIVA
http://www.redhat.com/support/errata/RHSA-2006-06… vendor-advisoryx_refsource_REDHAT
http://www.gnu.org/software/gnutls/security.html x_refsource_CONFIRM
https://oval.cisecurity.org/repository/search/def… vdb-entrysignaturex_refsource_OVAL
http://sunsolve.sun.com/search/document.do?assetk… vendor-advisoryx_refsource_SUNALERT
http://www.vupen.com/english/advisories/2006/3635 vdb-entryx_refsource_VUPEN
http://secunia.com/advisories/21942 third-party-advisoryx_refsource_SECUNIA
http://lists.gnupg.org/pipermail/gnutls-dev/2006-… mailing-listx_refsource_MLIST
http://secunia.com/advisories/22080 third-party-advisoryx_refsource_SECUNIA
http://security.gentoo.org/glsa/glsa-200609-15.xml vendor-advisoryx_refsource_GENTOO
http://www.novell.com/linux/security/advisories/2… vendor-advisoryx_refsource_SUSE
http://www.debian.org/security/2006/dsa-1182 vendor-advisoryx_refsource_DEBIAN
http://support.avaya.com/elmodocs2/security/ASA-2… x_refsource_CONFIRM
https://exchange.xforce.ibmcloud.com/vulnerabilit… vdb-entryx_refsource_XF
http://sunsolve.sun.com/search/document.do?assetk… vendor-advisoryx_refsource_SUNALERT
http://secunia.com/advisories/21973 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/22226 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/22084 third-party-advisoryx_refsource_SECUNIA
http://lists.gnupg.org/pipermail/gnutls-dev/2006-… mailing-listx_refsource_MLIST
http://www.ubuntu.com/usn/usn-348-1 vendor-advisoryx_refsource_UBUNTU
http://www.vupen.com/english/advisories/2007/2289 vdb-entryx_refsource_VUPEN
http://secunia.com/advisories/22097 third-party-advisoryx_refsource_SECUNIA
Date Public
2006-09-08 00:00
Show details on NVD website
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "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."
          },
          {
            "lang": "es",
            "value": "verify.c en GnuTLS anterior a 1.4.4, cuando usamos una llave RSA con exponente 3, no maneja   correctamente el exceso de datos en el campo  digestAlgorithm.parameters al generar un hash, el cual permite a un atacante remoto falsificar una firma PKCS #1 v1.5 que es firmada por esa llave RSA y evita que GnuTLS verifique correctamente X.509 y otros certificados que utilicen PKCS, es una variante de CVE-2006-4339."
          }
        ],
        "id": "CVE-2006-4790",
        "lastModified": "2026-04-16T00:27:16.627",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 5.0,
                "confidentialityImpact": "NONE",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
                "version": "2.0"
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              "exploitabilityScore": 10.0,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
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        },
        "published": "2006-09-14T19:07:00.000",
        "references": [
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            "url": "http://lists.gnupg.org/pipermail/gnutls-dev/2006-September/001205.html"
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        "sourceIdentifier": "secalert@redhat.com",
        "vendorComments": [
          {
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            "organization": "Red Hat"
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        "vulnStatus": "Modified",
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    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2025-11-21T13:24:00+00:00",
      "cve": "CVE-2006-4790",
      "id": "CVE-2006-4790",
      "initial_release_date": "2006-09-08T00:00:00+00:00",
      "product_status:fixed": "84",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "security flaw",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2006/cve-2006-4790.json",
      "version": "3"
    },
    "suse_vex": {
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      "current_release_date": "2026-10-19T00:23:45Z",
      "cve": "CVE-2006-4790",
      "id": "CVE-2006-4790",
      "initial_release_date": "2023-02-15T06:14:18Z",
      "product_status:recommended": "66",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2006-4790",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2023/cve-2006-4790.json",
      "version": "18"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

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