Vulnerability-Lookup

CNVD-2021-90095

Vulnerability from cnvd - Published: 2021-11-23

Title

Mozilla Firefox释放后重用漏洞（CNVD-2021-90095）

Description

Mozilla Firefox是美国Mozilla基金会的一款开源Web浏览器。 Mozilla Firefox存在释放后重用漏洞，该漏洞是由于nsLanguageAtomService对象中的释放后使用错误而存在的。远程攻击者可以利用该漏洞诱使受害者打开巧尽心思构建的网站，在释放错误后触发使用，并在系统上执行任意代码。

Severity

中

Patch Name

Mozilla Firefox释放后重用漏洞（CNVD-2021-90095）的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://bugzilla.mozilla.org/show_bug.cgi?id=1729642

Reference

https://www.cybersecurity-help.cz/vdb/SB2021100515

Impacted products

Name
['Mozilla Firefox <93.0', 'Mozilla Thunderbird <91.2', 'Mozilla Firefox ESR <91.2']

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-38498",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-38498"
    }
  },
  "description": "Mozilla Firefox\u662f\u7f8e\u56fdMozilla\u57fa\u91d1\u4f1a\u7684\u4e00\u6b3e\u5f00\u6e90Web\u6d4f\u89c8\u5668\u3002\n\nMozilla Firefox\u5b58\u5728\u91ca\u653e\u540e\u91cd\u7528\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u662f\u7531\u4e8ensLanguageAtomService\u5bf9\u8c61\u4e2d\u7684\u91ca\u653e\u540e\u4f7f\u7528\u9519\u8bef\u800c\u5b58\u5728\u7684\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u8be5\u6f0f\u6d1e\u8bf1\u4f7f\u53d7\u5bb3\u8005\u6253\u5f00\u5de7\u5c3d\u5fc3\u601d\u6784\u5efa\u7684\u7f51\u7ad9\uff0c\u5728\u91ca\u653e\u9519\u8bef\u540e\u89e6\u53d1\u4f7f\u7528\uff0c\u5e76\u5728\u7cfb\u7edf\u4e0a\u6267\u884c\u4efb\u610f\u4ee3\u7801\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://bugzilla.mozilla.org/show_bug.cgi?id=1729642",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-90095",
  "openTime": "2021-11-23",
  "patchDescription": "Mozilla Firefox\u662f\u7f8e\u56fdMozilla\u57fa\u91d1\u4f1a\u7684\u4e00\u6b3e\u5f00\u6e90Web\u6d4f\u89c8\u5668\u3002\r\n\r\nMozilla Firefox\u5b58\u5728\u91ca\u653e\u540e\u91cd\u7528\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u662f\u7531\u4e8ensLanguageAtomService\u5bf9\u8c61\u4e2d\u7684\u91ca\u653e\u540e\u4f7f\u7528\u9519\u8bef\u800c\u5b58\u5728\u7684\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u4ee5\u5229\u7528\u8be5\u6f0f\u6d1e\u8bf1\u4f7f\u53d7\u5bb3\u8005\u6253\u5f00\u5de7\u5c3d\u5fc3\u601d\u6784\u5efa\u7684\u7f51\u7ad9\uff0c\u5728\u91ca\u653e\u9519\u8bef\u540e\u89e6\u53d1\u4f7f\u7528\uff0c\u5e76\u5728\u7cfb\u7edf\u4e0a\u6267\u884c\u4efb\u610f\u4ee3\u7801\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": "Mozilla Firefox\u91ca\u653e\u540e\u91cd\u7528\u6f0f\u6d1e\uff08CNVD-2021-90095\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Mozilla Firefox \u003c93.0",
      "Mozilla Thunderbird \u003c91.2",
      "Mozilla Firefox ESR \u003c91.2"
    ]
  },
  "referenceLink": "https://www.cybersecurity-help.cz/vdb/SB2021100515",
  "serverity": "\u4e2d",
  "submitTime": "2021-10-10",
  "title": "Mozilla Firefox\u91ca\u653e\u540e\u91cd\u7528\u6f0f\u6d1e\uff08CNVD-2021-90095\uff09"
}

CVE-2021-38498 (GCVE-0-2021-38498)

Vulnerability from cvelistv5 – Published: 2021-11-03 00:03 – Updated: 2024-08-04 01:44

Summary

During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.

Severity

No CVSS data available.

CWE

Use-after-free of nsLanguageAtomService object

Assigner

mozilla mitre root

References

4 references

URL	Tags
https://www.mozilla.org/security/advisories/mfsa2…	x_refsource_MISC
https://www.mozilla.org/security/advisories/mfsa2…	x_refsource_MISC
https://www.mozilla.org/security/advisories/mfsa2…	x_refsource_MISC
https://bugzilla.mozilla.org/show_bug.cgi?id=1729642	x_refsource_MISC

Impacted products

3 products

Vendor	Product	Version
Mozilla	Firefox	Affected: unspecified , < 93 (custom)
Mozilla	Thunderbird	Affected: unspecified , < 91.2 (custom)
Mozilla	Firefox ESR	Affected: unspecified , < 91.2 (custom)

Show details on NVD website

JSON

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{
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          "dateUpdated": "2024-08-04T01:44:22.834Z",
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            "url": "https://www.mozilla.org/security/advisories/mfsa2021-47/"
          },
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            "tags": [
              "x_refsource_MISC",
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            ],
            "url": "https://www.mozilla.org/security/advisories/mfsa2021-45/"
          },
          {
            "tags": [
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              "x_transferred"
            ],
            "url": "https://www.mozilla.org/security/advisories/mfsa2021-43/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1729642"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Firefox",
          "vendor": "Mozilla",
          "versions": [
            {
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              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "Thunderbird",
          "vendor": "Mozilla",
          "versions": [
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              "status": "affected",
              "version": "unspecified",
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            }
          ]
        },
        {
          "product": "Firefox ESR",
          "vendor": "Mozilla",
          "versions": [
            {
              "lessThan": "91.2",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "During process shutdown, a document could have caused a use-after-free of a languages service object, leading to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox \u003c 93, Thunderbird \u003c 91.2, and Firefox ESR \u003c 91.2."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
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          "url": "https://www.mozilla.org/security/advisories/mfsa2021-45/"
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          "tags": [
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          "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1729642"
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                    {
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                    {
                      "product_name": "Firefox ESR",
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            }
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            },
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    "dateReserved": "2021-08-10T00:00:00.000Z",
    "dateUpdated": "2024-08-04T01:44:22.834Z",
    "state": "PUBLISHED"
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  "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.

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.
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CNVD-2021-90095

CVE-2021-38498 (GCVE-0-2021-38498)

Tags

Sightings

Nomenclature

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