Vulnerability-Lookup

CNVD-2021-43489

Vulnerability from cnvd - Published: 2021-06-20

Title

OTRS AG OTRS输入验证错误漏洞

Description

OTRS是德国（OTRS）公司的一个应用软件。一个服务管理软件。 OTRS AG OTRS 中存在输入验证错误漏洞，该漏洞源于系统未对输入的数据进行正确的验证。攻击者在电子邮件的正文中放置专门设计的URL可导致高CPU使用率和低服务质量，或者在极端情况下导致系统停止。

Severity

高

Patch Name

OTRS AG OTRS输入验证错误漏洞的补丁

Patch Description

OTRS是德国（OTRS）公司的一个应用软件。一个服务管理软件。 OTRS AG OTRS 中存在输入验证错误漏洞，该漏洞源于系统未对输入的数据进行正确的验证。攻击者在电子邮件的正文中放置专门设计的URL可导致高CPU使用率和低服务质量，或者在极端情况下导致系统停止。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://otrs.com/release-notes/otrs-security-advisory-2021-09/

Reference

https://vigilance.fr/vulnerability/OTRS-Help-Desk-overload-via-Email-Body-URL-35693

Impacted products

Name
['OTRS AG ((OTRS)) Community Edition 6.0.，>=6.0.1', 'OTRS AG ((OTRS)) Community Edition 7.0.，<=7.0.26', 'OTRS AG ((OTRS)) Community Edition 8.0.*，<=8.0.13']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-21439"
    }
  },
  "description": "OTRS\u662f\u5fb7\u56fd \uff08OTRS\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u5e94\u7528\u8f6f\u4ef6\u3002\u4e00\u4e2a\u670d\u52a1\u7ba1\u7406\u8f6f\u4ef6\u3002\n\nOTRS AG OTRS \u4e2d\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7cfb\u7edf\u672a\u5bf9\u8f93\u5165\u7684\u6570\u636e\u8fdb\u884c\u6b63\u786e\u7684\u9a8c\u8bc1\u3002\u653b\u51fb\u8005\u5728\u7535\u5b50\u90ae\u4ef6\u7684\u6b63\u6587\u4e2d\u653e\u7f6e\u4e13\u95e8\u8bbe\u8ba1\u7684URL\u53ef\u5bfc\u81f4\u9ad8CPU\u4f7f\u7528\u7387\u548c\u4f4e\u670d\u52a1\u8d28\u91cf\uff0c\u6216\u8005\u5728\u6781\u7aef\u60c5\u51b5\u4e0b\u5bfc\u81f4\u7cfb\u7edf\u505c\u6b62\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://otrs.com/release-notes/otrs-security-advisory-2021-09/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-43489",
  "openTime": "2021-06-20",
  "patchDescription": "OTRS\u662f\u5fb7\u56fd \uff08OTRS\uff09\u516c\u53f8\u7684\u4e00\u4e2a\u5e94\u7528\u8f6f\u4ef6\u3002\u4e00\u4e2a\u670d\u52a1\u7ba1\u7406\u8f6f\u4ef6\u3002\r\n\r\nOTRS AG OTRS \u4e2d\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7cfb\u7edf\u672a\u5bf9\u8f93\u5165\u7684\u6570\u636e\u8fdb\u884c\u6b63\u786e\u7684\u9a8c\u8bc1\u3002\u653b\u51fb\u8005\u5728\u7535\u5b50\u90ae\u4ef6\u7684\u6b63\u6587\u4e2d\u653e\u7f6e\u4e13\u95e8\u8bbe\u8ba1\u7684URL\u53ef\u5bfc\u81f4\u9ad8CPU\u4f7f\u7528\u7387\u548c\u4f4e\u670d\u52a1\u8d28\u91cf\uff0c\u6216\u8005\u5728\u6781\u7aef\u60c5\u51b5\u4e0b\u5bfc\u81f4\u7cfb\u7edf\u505c\u6b62\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "OTRS AG OTRS\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "OTRS AG ((OTRS)) Community Edition 6.0.*\uff0c\u003e=6.0.1",
      "OTRS AG ((OTRS)) Community Edition 7.0.*\uff0c\u003c=7.0.26",
      "OTRS AG ((OTRS)) Community Edition 8.0.*\uff0c\u003c=8.0.13"
    ]
  },
  "referenceLink": "https://vigilance.fr/vulnerability/OTRS-Help-Desk-overload-via-Email-Body-URL-35693",
  "serverity": "\u9ad8",
  "submitTime": "2021-06-17",
  "title": "OTRS AG OTRS\u8f93\u5165\u9a8c\u8bc1\u9519\u8bef\u6f0f\u6d1e"
}

CVE-2021-21439 (GCVE-0-2021-21439)

Vulnerability from cvelistv5 – Published: 2021-06-14 07:55 – Updated: 2024-09-16 19:52

Title

Possible DoS attack using a special crafted URL in email body

Summary

DoS attack can be performed when an email contains specially designed URL in the body. It can lead to the high CPU usage and cause low quality of service, or in extreme case bring the system to a halt. This issue affects: OTRS AG ((OTRS)) Community Edition 6.0.x version 6.0.1 and later versions. OTRS AG OTRS 7.0.x version 7.0.26 and prior versions; 8.0.x version 8.0.13 and prior versions.

Severity

6.5 (Medium)


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

CWE

CWE-754 - Improper Check for Unusual or Exceptional Conditions

Assigner

OTRS mitre root

References

2 references

URL	Tags
https://otrs.com/release-notes/otrs-security-advi…
https://lists.debian.org/debian-lts-announce/2023…	mailing-list

Impacted products

2 products

Vendor	Product	Version
OTRS AG	((OTRS)) Community Edition	Affected: 6.0.1 , < 6.0.x* (custom)
OTRS AG	OTRS	Affected: 7.0.x , ≤ 7.0.26 (custom) Affected: 8.0.x , ≤ 8.0.13 (custom)

Date Public

2021-06-14 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T18:16:22.212Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://otrs.com/release-notes/otrs-security-advisory-2021-09/"
          },
          {
            "name": "[debian-lts-announce] 20230831 [SECURITY] [DLA 3551-1] otrs2 security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00040.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "((OTRS)) Community Edition",
          "vendor": "OTRS AG",
          "versions": [
            {
              "lessThan": "6.0.x*",
              "status": "affected",
              "version": "6.0.1",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "OTRS",
          "vendor": "OTRS AG",
          "versions": [
            {
              "lessThanOrEqual": "7.0.26",
              "status": "affected",
              "version": "7.0.x",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "8.0.13",
              "status": "affected",
              "version": "8.0.x",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2021-06-14T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "DoS attack can be performed when an email contains specially designed URL in the body. It can lead to the high CPU usage and cause low quality of service, or in extreme case bring the system to a halt. This issue affects: OTRS AG ((OTRS)) Community Edition 6.0.x version 6.0.1 and later versions. OTRS AG OTRS 7.0.x version 7.0.26 and prior versions; 8.0.x version 8.0.13 and prior versions."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-754",
              "description": "CWE-754: Improper Check for Unusual or Exceptional Conditions",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-08-31T02:06:20.978Z",
        "orgId": "2e1bf29f-dc29-4ed8-830c-7b9348b6f0e8",
        "shortName": "OTRS"
      },
      "references": [
        {
          "url": "https://otrs.com/release-notes/otrs-security-advisory-2021-09/"
        },
        {
          "name": "[debian-lts-announce] 20230831 [SECURITY] [DLA 3551-1] otrs2 security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2023/08/msg00040.html"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Update to OTRS 8.0.14 or OTRS 7.0.27."
        }
      ],
      "source": {
        "advisory": "OSA-2021-09",
        "defect": [
          "2021031142000285"
        ],
        "discovery": "USER"
      },
      "title": "Possible DoS attack using a special crafted URL in email body",
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2e1bf29f-dc29-4ed8-830c-7b9348b6f0e8",
    "assignerShortName": "OTRS",
    "cveId": "CVE-2021-21439",
    "datePublished": "2021-06-14T07:55:10.080Z",
    "dateReserved": "2020-12-29T00:00:00.000Z",
    "dateUpdated": "2024-09-16T19:52:22.948Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.