Vulnerability-Lookup

ubuntu-cve-2021-27737

Vulnerability from osv_ubuntu

Published

2021-05-14 21:15

Modified

2026-01-20 04:58

Summary

Details

Apache Traffic Server 9.0.0 is vulnerable to a remote DOS attack on the experimental Slicer plugin.

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)

low

References

URL

Type

	https://ubuntu.com/security/CVE-2021-27737	REPORT
	https://lists.apache.org/thread.html/r74f72650c35…	REPORT
	https://lists.apache.org/thread.html/r74f72650c35…	REPORT
	https://lists.apache.org/thread.html/r74f72650c35…	REPORT
	https://lists.apache.org/thread.html/r74f72650c35…	REPORT
	https://www.cve.org/CVERecord?id=CVE-2021-27737	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "trafficserver",
            "binary_version": "5.3.0-2ubuntu2"
          },
          {
            "binary_name": "trafficserver-dev",
            "binary_version": "5.3.0-2ubuntu2"
          },
          {
            "binary_name": "trafficserver-experimental-plugins",
            "binary_version": "5.3.0-2ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "trafficserver",
        "purl": "pkg:deb/ubuntu/trafficserver@5.3.0-2ubuntu2?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.3.0-2ubuntu1",
        "5.3.0-2ubuntu2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "trafficserver",
            "binary_version": "7.1.2+ds-3"
          },
          {
            "binary_name": "trafficserver-dev",
            "binary_version": "7.1.2+ds-3"
          },
          {
            "binary_name": "trafficserver-experimental-plugins",
            "binary_version": "7.1.2+ds-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "trafficserver",
        "purl": "pkg:deb/ubuntu/trafficserver@7.1.2+ds-3?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.0.0-5",
        "7.1.2+ds-2",
        "7.1.2+ds-2build1",
        "7.1.2+ds-3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "trafficserver",
            "binary_version": "8.0.5+ds-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "trafficserver-dev",
            "binary_version": "8.0.5+ds-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "trafficserver-experimental-plugins",
            "binary_version": "8.0.5+ds-3ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "trafficserver",
        "purl": "pkg:deb/ubuntu/trafficserver@8.0.5+ds-3ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.0.5+ds-1",
        "8.0.5+ds-2",
        "8.0.5+ds-2build1",
        "8.0.5+ds-2ubuntu1",
        "8.0.5+ds-3",
        "8.0.5+ds-3ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "trafficserver",
            "binary_version": "9.1.1+ds-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "trafficserver-dev",
            "binary_version": "9.1.1+ds-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "trafficserver-experimental-plugins",
            "binary_version": "9.1.1+ds-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "trafficserver",
        "purl": "pkg:deb/ubuntu/trafficserver@9.1.1+ds-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.1.1+ds-1.1",
        "9.1.1+ds-2build1",
        "9.1.1+ds-2ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "trafficserver",
            "binary_version": "9.2.3+ds-1+deb12u1build4"
          },
          {
            "binary_name": "trafficserver-dev",
            "binary_version": "9.2.3+ds-1+deb12u1build4"
          },
          {
            "binary_name": "trafficserver-experimental-plugins",
            "binary_version": "9.2.3+ds-1+deb12u1build4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "trafficserver",
        "purl": "pkg:deb/ubuntu/trafficserver@9.2.3+ds-1+deb12u1build4?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "9.2.1+ds-1build1",
        "9.2.2+ds-1",
        "9.2.3+ds-1",
        "9.2.3+ds-1+deb12u1",
        "9.2.3+ds-1+deb12u1build1",
        "9.2.3+ds-1+deb12u1build3",
        "9.2.3+ds-1+deb12u1build4"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "trafficserver",
            "binary_version": "9.2.5+ds-1ubuntu2"
          },
          {
            "binary_name": "trafficserver-dev",
            "binary_version": "9.2.5+ds-1ubuntu2"
          },
          {
            "binary_name": "trafficserver-experimental-plugins",
            "binary_version": "9.2.5+ds-1ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "trafficserver",
        "purl": "pkg:deb/ubuntu/trafficserver@9.2.5+ds-1ubuntu2?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "9.2.5+ds-1ubuntu1",
        "9.2.5+ds-1ubuntu2"
      ]
    }
  ],
  "aliases": [],
  "details": "Apache Traffic Server 9.0.0 is vulnerable to a remote DOS attack on the experimental Slicer plugin.",
  "id": "UBUNTU-CVE-2021-27737",
  "modified": "2026-01-20T04:58:22Z",
  "published": "2021-05-14T21:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-27737"
    },
    {
      "type": "REPORT",
      "url": "https://lists.apache.org/thread.html/r74f72650c3590478f028ea3a1b8cab2a33d20ad9ff407e894ca70525%40%3Cannounce.trafficserver.apache.org%3E"
    },
    {
      "type": "REPORT",
      "url": "https://lists.apache.org/thread.html/r74f72650c3590478f028ea3a1b8cab2a33d20ad9ff407e894ca70525@%3Cdev.trafficserver.apache.org%3E"
    },
    {
      "type": "REPORT",
      "url": "https://lists.apache.org/thread.html/r74f72650c3590478f028ea3a1b8cab2a33d20ad9ff407e894ca70525@%3Cannounce.trafficserver.apache.org%3E"
    },
    {
      "type": "REPORT",
      "url": "https://lists.apache.org/thread.html/r74f72650c3590478f028ea3a1b8cab2a33d20ad9ff407e894ca70525@%3Cusers.trafficserver.apache.org%3E"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-27737"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-27737"
  ],
  "withdrawn": "2026-02-12T16:52:56Z"
}

CVE-2021-27737 (GCVE-0-2021-27737)

Vulnerability from cvelistv5 – Published: 2021-05-14 20:39 – Updated: 2024-08-03 21:26

Summary

Apache Traffic Server 9.0.0 is vulnerable to a remote DOS attack on the experimental Slicer plugin.

Severity

No CVSS data available.

CWE

Information Disclosure

Assigner

apache mitre root

References

3 references

URL	Tags
https://lists.apache.org/thread.html/r74f72650c35…	mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r74f72650c35…	mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r74f72650c35…	mailing-listx_refsource_MLIST

Impacted products

1 product

Vendor	Product	Version
n/a	Apache Traffic Server	Affected: Apache Traffic Server 9.0.0

Show details on NVD website

JSON

To clipboard

{
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          },
          {
            "name": "[trafficserver-dev] 20210513 Apache Traffic Server is vulnerable to a DOS attack in the experimental Slicer plugin",
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          },
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          }
        ],
        "title": "CVE Program Container"
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    "cna": {
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          "versions": [
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

ubuntu-cve-2021-27737

Vulnerability from osv_ubuntu

CVE-2021-27737 (GCVE-0-2021-27737)

Tags

Sightings

Nomenclature