Vulnerability-Lookup

CNVD-2019-32348

Vulnerability from cnvd - Published: 2019-09-20

Title

YARA libyara/exec.c文件信息泄露漏洞（CNVD-2019-32348）

Description

YARA是一套用于帮助软件研究人员识别和分类恶意软件样本的工具。 YARA 3.8.1版本中的libyara/exec.c文件存在安全漏洞。攻击者可利用该漏洞获取真实栈中的地址。

Severity

中

Patch Name

YARA libyara/exec.c文件信息泄露漏洞（CNVD-2019-32348）的补丁

Patch Description

YARA是一套用于帮助软件研究人员识别和分类恶意软件样本的工具。 YARA 3.8.1版本中的libyara/exec.c文件存在安全漏洞。攻击者可利用该漏洞获取真实栈中的地址。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/VirusTotal/yara/issues/999

Reference

https://github.com/VirusTotal/yara/issues/999

Impacted products

Name
YARA YARA 3.8.1

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-19974",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19974"
    }
  },
  "description": "YARA\u662f\u4e00\u5957\u7528\u4e8e\u5e2e\u52a9\u8f6f\u4ef6\u7814\u7a76\u4eba\u5458\u8bc6\u522b\u548c\u5206\u7c7b\u6076\u610f\u8f6f\u4ef6\u6837\u672c\u7684\u5de5\u5177\u3002\n\nYARA 3.8.1\u7248\u672c\u4e2d\u7684libyara/exec.c\u6587\u4ef6\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u771f\u5b9e\u6808\u4e2d\u7684\u5730\u5740\u3002",
  "discovererName": "unknwon",
  "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/VirusTotal/yara/issues/999",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-32348",
  "openTime": "2019-09-20",
  "patchDescription": "YARA\u662f\u4e00\u5957\u7528\u4e8e\u5e2e\u52a9\u8f6f\u4ef6\u7814\u7a76\u4eba\u5458\u8bc6\u522b\u548c\u5206\u7c7b\u6076\u610f\u8f6f\u4ef6\u6837\u672c\u7684\u5de5\u5177\u3002\r\n\r\nYARA 3.8.1\u7248\u672c\u4e2d\u7684libyara/exec.c\u6587\u4ef6\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u771f\u5b9e\u6808\u4e2d\u7684\u5730\u5740\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": "YARA libyara/exec.c\u6587\u4ef6\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2019-32348\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "YARA YARA 3.8.1"
  },
  "referenceLink": "https://github.com/VirusTotal/yara/issues/999",
  "serverity": "\u4e2d",
  "submitTime": "2018-12-19",
  "title": "YARA libyara/exec.c\u6587\u4ef6\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2019-32348\uff09"
}

CVE-2018-19974 (GCVE-0-2018-19974)

Vulnerability from cvelistv5 – Published: 2018-12-17 18:00 – Updated: 2024-08-05 11:51

Summary

In YARA 3.8.1, bytecode in a specially crafted compiled rule can read uninitialized data from VM scratch memory in libyara/exec.c. This can allow attackers to discover addresses in the real stack (not the YARA virtual stack).

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

4 references

URL	Tags
https://bnbdr.github.io/posts/extracheese/	x_refsource_MISC
https://github.com/VirusTotal/yara/issues/999	x_refsource_CONFIRM
https://github.com/bnbdr/swisscheese/	x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA

Date Public

2018-12-04 00:00

Show details on NVD website

JSON

To clipboard

{
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          "dateUpdated": "2024-08-05T11:51:17.913Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            ],
            "url": "https://bnbdr.github.io/posts/extracheese/"
          },
          {
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              "x_refsource_CONFIRM",
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            ],
            "url": "https://github.com/VirusTotal/yara/issues/999"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/bnbdr/swisscheese/"
          },
          {
            "name": "FEDORA-2019-a00b4760a0",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DFFXDAMP6GJ337LIOTVF5I4T6QGMN3ZR/"
          }
        ],
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        }
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        "dateUpdated": "2019-10-06T02:06:02.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
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        },
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          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DFFXDAMP6GJ337LIOTVF5I4T6QGMN3ZR/"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2018-19974",
          "STATE": "PUBLIC"
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                      "version": {
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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.