Vulnerability-Lookup

CNVD-2021-40720

Vulnerability from cnvd - Published: 2021-06-06

Title

re2c堆栈消耗漏洞

Description

re2c是一款开源的C语言和C++语言生成器。 re2c 2.0版本中存在安全漏洞。攻击者可利用该漏洞造成无限循环，消耗大量栈。

Severity

中

Patch Name

re2c堆栈消耗漏洞的补丁

Patch Description

re2c是一款开源的C语言和C++语言生成器。 re2c 2.0版本中存在安全漏洞。攻击者可利用该漏洞造成无限循环，消耗大量栈。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://github.com/skvadrik/re2c/issues/219

Reference

https://nvd.nist.gov/vuln/detail/CVE-2018-21232

Impacted products

Name
re2c RE2C 2.0

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-21232"
    }
  },
  "description": "re2c\u662f\u4e00\u6b3e\u5f00\u6e90\u7684C\u8bed\u8a00\u548cC++\u8bed\u8a00\u751f\u6210\u5668\u3002\n\nre2c 2.0\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u65e0\u9650\u5faa\u73af\uff0c\u6d88\u8017\u5927\u91cf\u6808\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://github.com/skvadrik/re2c/issues/219",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-40720",
  "openTime": "2021-06-06",
  "patchDescription": "re2c\u662f\u4e00\u6b3e\u5f00\u6e90\u7684C\u8bed\u8a00\u548cC++\u8bed\u8a00\u751f\u6210\u5668\u3002\r\n\r\nre2c 2.0\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u65e0\u9650\u5faa\u73af\uff0c\u6d88\u8017\u5927\u91cf\u6808\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": "re2c\u5806\u6808\u6d88\u8017\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "re2c RE2C 2.0"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-21232",
  "serverity": "\u4e2d",
  "submitTime": "2020-04-30",
  "title": "re2c\u5806\u6808\u6d88\u8017\u6f0f\u6d1e"
}

CVE-2018-21232 (GCVE-0-2018-21232)

Vulnerability from cvelistv5 – Published: 2020-04-29 13:36 – Updated: 2024-08-05 12:26

Summary

re2c before 2.0 has uncontrolled recursion that causes stack consumption in find_fixed_tags.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

3 references

URL	Tags
https://github.com/skvadrik/re2c/issues/219	x_refsource_MISC
https://www.openwall.com/lists/oss-security/2020/…	x_refsource_MISC
http://www.openwall.com/lists/oss-security/2020/05/14/4	mailing-listx_refsource_MLIST

Show details on NVD website

JSON

To clipboard

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          },
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              "x_refsource_MISC",
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            "url": "https://www.openwall.com/lists/oss-security/2020/04/27/2"
          },
          {
            "name": "[oss-security] 20200514 Re: re2c: infinite loop",
            "tags": [
              "mailing-list",
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              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2020/05/14/4"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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          "vendor": "n/a",
          "versions": [
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          "value": "re2c before 2.0 has uncontrolled recursion that causes stack consumption in find_fixed_tags."
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      "providerMetadata": {
        "dateUpdated": "2020-05-14T11:06:06.000Z",
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        "shortName": "mitre"
      },
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        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/skvadrik/re2c/issues/219"
        },
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          "tags": [
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          ],
          "url": "https://www.openwall.com/lists/oss-security/2020/04/27/2"
        },
        {
          "name": "[oss-security] 20200514 Re: re2c: infinite loop",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2020/05/14/4"
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          "ID": "CVE-2018-21232",
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                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
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                      }
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        "description": {
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  "cveMetadata": {
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    "datePublished": "2020-04-29T13:36:31.000Z",
    "dateReserved": "2020-04-28T00:00:00.000Z",
    "dateUpdated": "2024-08-05T12:26:39.556Z",
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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.

Action not permitted

CNVD-2021-40720

CVE-2018-21232 (GCVE-0-2018-21232)

Tags

Sightings

Nomenclature

Related by attack behaviour