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High

Security advisory

Type: advisorySources: OSVCVE: CVE-2016-7444

The gnutls_ocsp_resp_check_crt function in lib/x509/ocsp.c in GnuTLS before 3.4.15 and 3.5.x before 3.5.4 does not verify the serial length of an OCSP response, which might allow remote attackers to bypass an intended certificate validation mechanism via vectors involving trailing bytes left by gnutls_malloc.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2016-7444
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 09:20 UTC · Revision 1

Source evidence

CVE-2016-7444

core-osv · Original source

Published 27 Sept 2016, 15:59 UTC

The gnutls_ocsp_resp_check_crt function in lib/x509/ocsp.c in GnuTLS before 3.4.15 and 3.5.x before 3.5.4 does not verify the serial length of an OCSP response, which might allow remote attackers to bypass an intended certificate validation mechanism via vectors involving trailing bytes left by gnutls_malloc.

osv:CVE-2016-7444
Complete source record
{
  "id": "5dd430208e2045022f735c4de67fef3f56c240f9ee803d567815dcf5619f05d3",
  "url": "https://osv.dev/vulnerability/CVE-2016-7444",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2016-7444",
    "summary": "The gnutls_ocsp_resp_check_crt function in lib/x509/ocsp.c in GnuTLS before 3.4.15 and 3.5.x before 3.5.4 does not verify the serial length of an OCSP response, which might allow remote attackers to bypass an intended certificate validation mechanism via vectors involving trailing bytes left by gnutls_malloc.",
    "evidence": "osv:CVE-2016-7444",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2016-7444",
      "aliases": [
        "CVE-2016-7444"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
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                    "range": [
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          "database_specific": {
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            "vanir_signatures_modified": "2026-10-24T14:12:25Z"
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      "modified": "2026-10-24T14:12:25.104705824Z",
      "provider": "osv",
      "references": [
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        "https://lists.gnupg.org/pipermail/gnutls-devel/2016-September/008146.html",
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    "severity_evidence": "/severity/0/score"
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  "source_id": "core-osv",
  "document_id": 443399,
  "published_at": "2016-09-27T15:59:12.517+00:00"
}