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TI-2006-04627 Aliases CVE-2006-4790GHSA-fjc3-r8f9-57p5

verify.c in GnuTLS before 1.4.4, when using an RSA key with exponent 3, does not properly…

Priority LOW 28Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Partial · None
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.

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.

Why it matters now

EPSS 0.02556 85th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 40

CPEVersionsRoleVendor
cpe:2.3:a:gnu:gnutls:1.0.17:*:*:*:*:*:*:*1.0.17VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.0.18:*:*:*:*:*:*:*1.0.18VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.0.19:*:*:*:*:*:*:*1.0.19VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.0.20:*:*:*:*:*:*:*1.0.20VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.0.21:*:*:*:*:*:*:*1.0.21VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.0.22:*:*:*:*:*:*:*1.0.22VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.0.23:*:*:*:*:*:*:*1.0.23VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.0.24:*:*:*:*:*:*:*1.0.24VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.0.25:*:*:*:*:*:*:*1.0.25VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.1.14:*:*:*:*:*:*:*1.1.14VulnerableGNU
  • cpe:2.3:a:gnu:gnutls:1.0.17:*:*:*:*:*:*:* Versions 1.0.17 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.0.18:*:*:*:*:*:*:* Versions 1.0.18 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.0.19:*:*:*:*:*:*:* Versions 1.0.19 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.0.20:*:*:*:*:*:*:* Versions 1.0.20 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.0.21:*:*:*:*:*:*:* Versions 1.0.21 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.0.22:*:*:*:*:*:*:* Versions 1.0.22 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.0.23:*:*:*:*:*:*:* Versions 1.0.23 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.0.24:*:*:*:*:*:*:* Versions 1.0.24 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.0.25:*:*:*:*:*:*:* Versions 1.0.25 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.1.14:*:*:*:*:*:*:* Versions 1.1.14 Vulnerable ·GNU
Show 30 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:gnu:gnutls:1.1.15:*:*:*:*:*:*:*1.1.15VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.1.16:*:*:*:*:*:*:*1.1.16VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.1.17:*:*:*:*:*:*:*1.1.17VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.1.18:*:*:*:*:*:*:*1.1.18VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.1.19:*:*:*:*:*:*:*1.1.19VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.1.20:*:*:*:*:*:*:*1.1.20VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.1.21:*:*:*:*:*:*:*1.1.21VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.1.22:*:*:*:*:*:*:*1.1.22VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.1.23:*:*:*:*:*:*:*1.1.23VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.2.0:*:*:*:*:*:*:*1.2.0VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.2.1:*:*:*:*:*:*:*1.2.1VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.2.2:*:*:*:*:*:*:*1.2.2VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.2.3:*:*:*:*:*:*:*1.2.3VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.2.4:*:*:*:*:*:*:*1.2.4VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.2.5:*:*:*:*:*:*:*1.2.5VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.2.6:*:*:*:*:*:*:*1.2.6VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.2.7:*:*:*:*:*:*:*1.2.7VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.2.8:*:*:*:*:*:*:*1.2.8VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.2.8.1a1:*:*:*:*:*:*:*1.2.8.1a1VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.2.9:*:*:*:*:*:*:*1.2.9VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.2.10:*:*:*:*:*:*:*1.2.10VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.2.11:*:*:*:*:*:*:*1.2.11VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.3.0:*:*:*:*:*:*:*1.3.0VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.3.1:*:*:*:*:*:*:*1.3.1VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.3.2:*:*:*:*:*:*:*1.3.2VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.3.3:*:*:*:*:*:*:*1.3.3VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.3.4:*:*:*:*:*:*:*1.3.4VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.3.5:*:*:*:*:*:*:*1.3.5VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.4.0:*:*:*:*:*:*:*1.4.0VulnerableGNU
cpe:2.3:a:gnu:gnutls:1.4.1:*:*:*:*:*:*:*1.4.1VulnerableGNU
  • cpe:2.3:a:gnu:gnutls:1.1.15:*:*:*:*:*:*:* Versions 1.1.15 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.1.16:*:*:*:*:*:*:* Versions 1.1.16 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.1.17:*:*:*:*:*:*:* Versions 1.1.17 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.1.18:*:*:*:*:*:*:* Versions 1.1.18 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.1.19:*:*:*:*:*:*:* Versions 1.1.19 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.1.20:*:*:*:*:*:*:* Versions 1.1.20 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.1.21:*:*:*:*:*:*:* Versions 1.1.21 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.1.22:*:*:*:*:*:*:* Versions 1.1.22 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.1.23:*:*:*:*:*:*:* Versions 1.1.23 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.2.0:*:*:*:*:*:*:* Versions 1.2.0 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.2.1:*:*:*:*:*:*:* Versions 1.2.1 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.2.2:*:*:*:*:*:*:* Versions 1.2.2 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.2.3:*:*:*:*:*:*:* Versions 1.2.3 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.2.4:*:*:*:*:*:*:* Versions 1.2.4 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.2.5:*:*:*:*:*:*:* Versions 1.2.5 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.2.6:*:*:*:*:*:*:* Versions 1.2.6 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.2.7:*:*:*:*:*:*:* Versions 1.2.7 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.2.8:*:*:*:*:*:*:* Versions 1.2.8 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.2.8.1a1:*:*:*:*:*:*:* Versions 1.2.8.1a1 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.2.9:*:*:*:*:*:*:* Versions 1.2.9 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.2.10:*:*:*:*:*:*:* Versions 1.2.10 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.2.11:*:*:*:*:*:*:* Versions 1.2.11 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.3.0:*:*:*:*:*:*:* Versions 1.3.0 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.3.1:*:*:*:*:*:*:* Versions 1.3.1 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.3.2:*:*:*:*:*:*:* Versions 1.3.2 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.3.3:*:*:*:*:*:*:* Versions 1.3.3 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.3.4:*:*:*:*:*:*:* Versions 1.3.4 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.3.5:*:*:*:*:*:*:* Versions 1.3.5 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.4.0:*:*:*:*:*:*:* Versions 1.4.0 Vulnerable ·GNU
  • cpe:2.3:a:gnu:gnutls:1.4.1:*:*:*:*:*:*:* Versions 1.4.1 Vulnerable ·GNU

Remediation

Red Hat 1 advisory

  • RHSA-2006:0680 Released 2006-09-14 · Red Hat rating Important
    gnutls security update
    • Red Hat Enterprise Linux AS version 4 gnutls-1.0.20-3.2.3, gnutls-1.0.20-3.2.3.i386, gnutls-1.0.20-3.2.3.ia64 +5
    • Red Hat Enterprise Linux Desktop version 4 gnutls-1.0.20-3.2.3, gnutls-1.0.20-3.2.3.i386, gnutls-devel-1.0.20-3.2.3 +1
    • Red Hat Enterprise Linux ES version 4 gnutls-1.0.20-3.2.3, gnutls-1.0.20-3.2.3.i386, gnutls-1.0.20-3.2.3.ia64 +3
    • Red Hat Enterprise Linux WS version 4 gnutls-1.0.20-3.2.3, gnutls-1.0.20-3.2.3.i386, gnutls-1.0.20-3.2.3.ia64 +3

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux AS version 4Fixed RHSA-2006:0680
Red Hat Enterprise Linux Desktop version 4Fixed RHSA-2006:0680
Red Hat Enterprise Linux ES version 4Fixed RHSA-2006:0680
Red Hat Enterprise Linux WS version 4Fixed RHSA-2006:0680

Timeline

  1. 2026-10-02 Threatist record created from CVE-2006-4790
  2. 2026-10-03 Alias added: GHSA-fjc3-r8f9-57p5

References

Patch 2

Advisory 8

Other 7

  • TI-2009-03392 The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft… CVSS 3.1CRITICAL 9.8
  • TI-2026-03321 Gnutls: gnutls: policy bypass due to case-sensitive nameconstraints comparison CVSS 3.1HIGH 7.4
  • TI-2024-00525 Gnutls: rejects certificate chain with distributed trust CVSS 3.1HIGH 7.5
  • TI-2023-00345 Observable discrepancy in gnutls CVSS 3.1HIGH 7.4
  • TI-2019-02841 Use after free in gnutls CVSS 3.0HIGH 7.5
  • TI-2017-03378 Double free vulnerability in the gnutls_x509_ext_import_proxy function in GnuTLS before… CVSS 3.0CRITICAL 9.8
See all 73 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences