OESA-2021-1314 (CVE-2021-36386)

Vulnerability from osv_openeuler – Published: 2021-08-20 11:04 – Updated: 2026-08-06 11:04 – Source website
VLAI
Summary
fetchmail security update
Details

Fetchmail is a remote mail retrieval and forwarding utility intended for use over on-demand TCP/IP links, like SLIP or PPP connections. Fetchmail supports every remote-mail protocol currently in use on the Internet (POP2, POP3, RPOP, APOP, KPOP, all IMAPs, ESMTP ETRN, IPv6, and IPSEC) for retrieval. Then Fetchmail forwards the mail through SMTP so you can read it through your favorite mail client. Install fetchmail if you need to retrieve mail over SLIP or PPP connections.

Security Fix(es):

report_vbuild in report.c in Fetchmail before 6.4.20 sometimes omits initialization of the vsnprintf va_list argument, which might allow mail servers to cause a denial of service or possibly have unspecified other impact via long error messages. NOTE: it is unclear whether use of Fetchmail on any realistic platform results in an impact beyond an inconvenience to the client user.(CVE-2021-36386)

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "fetchmail-debuginfo-6.4.20-1.oe1.aarch64.rpm",
          "fetchmail-debugsource-6.4.20-1.oe1.aarch64.rpm",
          "fetchmail-6.4.20-1.oe1.aarch64.rpm"
        ],
        "noarch": [
          "fetchmail-help-6.4.20-1.oe1.noarch.rpm"
        ],
        "src": [
          "fetchmail-6.4.20-1.oe1.src.rpm"
        ],
        "x86_64": [
          "fetchmail-debugsource-6.4.20-1.oe1.x86_64.rpm",
          "fetchmail-6.4.20-1.oe1.x86_64.rpm",
          "fetchmail-debuginfo-6.4.20-1.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "fetchmail",
        "purl": "pkg:rpm/openEuler/fetchmail\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.4.20-1.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "fetchmail-6.4.20-1.oe1.aarch64.rpm",
          "fetchmail-debuginfo-6.4.20-1.oe1.aarch64.rpm",
          "fetchmail-debugsource-6.4.20-1.oe1.aarch64.rpm"
        ],
        "noarch": [
          "fetchmail-help-6.4.20-1.oe1.noarch.rpm"
        ],
        "src": [
          "fetchmail-6.4.20-1.oe1.src.rpm"
        ],
        "x86_64": [
          "fetchmail-debugsource-6.4.20-1.oe1.x86_64.rpm",
          "fetchmail-6.4.20-1.oe1.x86_64.rpm",
          "fetchmail-debuginfo-6.4.20-1.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP2",
        "name": "fetchmail",
        "purl": "pkg:rpm/openEuler/fetchmail\u0026distro=openEuler-20.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.4.20-1.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "Fetchmail is a remote mail retrieval and forwarding utility intended for use over on-demand TCP/IP links, like SLIP or PPP connections. Fetchmail supports every remote-mail protocol currently in use on the Internet (POP2, POP3, RPOP, APOP, KPOP, all IMAPs, ESMTP ETRN, IPv6, and IPSEC) for retrieval. Then Fetchmail forwards the mail through SMTP so you can read it through your favorite mail client. Install fetchmail if you need to retrieve mail over SLIP or PPP connections.\r\n\r\nSecurity Fix(es):\r\n\r\nreport_vbuild in report.c in Fetchmail before 6.4.20 sometimes omits initialization of the vsnprintf va_list argument, which might allow mail servers to cause a denial of service or possibly have unspecified other impact via long error messages. NOTE: it is unclear whether use of Fetchmail on any realistic platform results in an impact beyond an inconvenience to the client user.(CVE-2021-36386)",
  "id": "OESA-2021-1314",
  "modified": "2026-08-06T11:04:33Z",
  "published": "2021-08-20T11:04:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1314"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-36386"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "fetchmail security update",
  "upstream": [
    "CVE-2021-36386"
  ]
}



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