Vulnerability-Lookup

CNVD-2021-38313

Vulnerability from cnvd - Published: 2021-06-01

Title

Telegram类型混淆漏洞

Description

Telegram是一款即时通信移动应用程序。 Telegram Android版7.1.0 (2090)之前版本、iOS版7.1之前版本、macOS版7.1之前版本，受rlottie库的自定义派生的VDasher constructor函数中存在类型混淆漏洞。攻击者可利用该漏洞通过恶意动画标签在受害设备上越界访问Telegram的堆内存。

Severity

中

Patch Name

Telegram类型混淆漏洞的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，详情请关注厂商主页： https://www.telegram.org/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-31317

Impacted products

Name
['Telegram Telegram for Android <7.1.0 (2090)', 'Telegram Telegram for iOS <7.1', 'Telegram Telegram for macOS <7.1']

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-31317",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-31317"
    }
  },
  "description": "Telegram\u662f\u4e00\u6b3e\u5373\u65f6\u901a\u4fe1\u79fb\u52a8\u5e94\u7528\u7a0b\u5e8f\u3002\n\nTelegram Android\u72487.1.0 (2090)\u4e4b\u524d\u7248\u672c\u3001iOS\u72487.1\u4e4b\u524d\u7248\u672c\u3001macOS\u72487.1\u4e4b\u524d\u7248\u672c\uff0c\u53d7rlottie\u5e93\u7684\u81ea\u5b9a\u4e49\u6d3e\u751f\u7684VDasher constructor\u51fd\u6570\u4e2d\u5b58\u5728\u7c7b\u578b\u6df7\u6dc6\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u6076\u610f\u52a8\u753b\u6807\u7b7e\u5728\u53d7\u5bb3\u8bbe\u5907\u4e0a\u8d8a\u754c\u8bbf\u95eeTelegram\u7684\u5806\u5185\u5b58\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8be6\u60c5\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\uff1a\r\nhttps://www.telegram.org/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-38313",
  "openTime": "2021-06-01",
  "patchDescription": "Telegram\u662f\u4e00\u6b3e\u5373\u65f6\u901a\u4fe1\u79fb\u52a8\u5e94\u7528\u7a0b\u5e8f\u3002\r\n\r\nTelegram Android\u72487.1.0 (2090)\u4e4b\u524d\u7248\u672c\u3001iOS\u72487.1\u4e4b\u524d\u7248\u672c\u3001macOS\u72487.1\u4e4b\u524d\u7248\u672c\uff0c\u53d7rlottie\u5e93\u7684\u81ea\u5b9a\u4e49\u6d3e\u751f\u7684VDasher constructor\u51fd\u6570\u4e2d\u5b58\u5728\u7c7b\u578b\u6df7\u6dc6\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u6076\u610f\u52a8\u753b\u6807\u7b7e\u5728\u53d7\u5bb3\u8bbe\u5907\u4e0a\u8d8a\u754c\u8bbf\u95eeTelegram\u7684\u5806\u5185\u5b58\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": "Telegram\u7c7b\u578b\u6df7\u6dc6\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Telegram Telegram for Android \u003c7.1.0 (2090)",
      "Telegram Telegram for iOS \u003c7.1",
      "Telegram Telegram for macOS \u003c7.1"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-31317",
  "serverity": "\u4e2d",
  "submitTime": "2021-05-19",
  "title": "Telegram\u7c7b\u578b\u6df7\u6dc6\u6f0f\u6d1e"
}

CVE-2021-31317 (GCVE-0-2021-31317)

Vulnerability from cvelistv5 – Published: 2021-05-18 19:44 – Updated: 2024-08-03 22:55

Summary

Telegram Android <7.1.0 (2090), Telegram iOS <7.1, and Telegram macOS <7.1 are affected by a Type Confusion in the VDasher constructor of their custom fork of the rlottie library. A remote attacker might be able to access Telegram's heap memory out-of-bounds on a victim device via a malicious animated sticker.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

2 references

URL	Tags
https://www.shielder.it/blog/2021/02/hunting-for-…	x_refsource_MISC
https://www.shielder.it/advisories/telegram-rlott…	x_refsource_MISC

Date Public

2021-02-16 00:00

Show details on NVD website

JSON

To clipboard

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          },
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            ],
            "url": "https://www.shielder.it/advisories/telegram-rlottie-vdasher-vdasher-type-confusion/"
          }
        ],
        "title": "CVE Program Container"
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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.
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.