Vulnerability-Lookup

CNVD-2020-03942

Vulnerability from cnvd - Published: 2020-02-06

Title

libsixel无效内存地址解引用漏洞

Description

libsixel是一个SIXEL编码器/解码器实现。 libsixel 1.8.3之前版本中的frompnm.c中的load_pnm存在无效内存地址解引用漏洞。攻击者可通过特制输入利用该漏洞导致拒绝服务。

Severity

高

Patch Name

libsixel无效内存地址解引用漏洞的补丁

Patch Description

libsixel是一个SIXEL编码器/解码器实现。 libsixel 1.8.3之前版本中的frompnm.c中的load_pnm存在无效内存地址解引用漏洞。攻击者可通过特制输入利用该漏洞导致拒绝服务。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

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/saitoha/libsixel/commit/e17c0765ed708186865f0f8badfed44181063776

Reference

https://nvd.nist.gov/vuln/detail/CVE-2019-20022

Impacted products

Name
libsixel libsixel <1.8.3

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-20022",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2019-20022"
    }
  },
  "description": "libsixel\u662f\u4e00\u4e2aSIXEL\u7f16\u7801\u5668/\u89e3\u7801\u5668\u5b9e\u73b0\u3002\n\nlibsixel 1.8.3\u4e4b\u524d\u7248\u672c\u4e2d\u7684frompnm.c\u4e2d\u7684load_pnm\u5b58\u5728\u65e0\u6548\u5185\u5b58\u5730\u5740\u89e3\u5f15\u7528\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u7279\u5236\u8f93\u5165\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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://github.com/saitoha/libsixel/commit/e17c0765ed708186865f0f8badfed44181063776",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-03942",
  "openTime": "2020-02-06",
  "patchDescription": "libsixel\u662f\u4e00\u4e2aSIXEL\u7f16\u7801\u5668/\u89e3\u7801\u5668\u5b9e\u73b0\u3002\r\n\r\nlibsixel 1.8.3\u4e4b\u524d\u7248\u672c\u4e2d\u7684frompnm.c\u4e2d\u7684load_pnm\u5b58\u5728\u65e0\u6548\u5185\u5b58\u5730\u5740\u89e3\u5f15\u7528\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u7279\u5236\u8f93\u5165\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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": "libsixel\u65e0\u6548\u5185\u5b58\u5730\u5740\u89e3\u5f15\u7528\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "libsixel libsixel \u003c1.8.3"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2019-20022",
  "serverity": "\u9ad8",
  "submitTime": "2019-12-27",
  "title": "libsixel\u65e0\u6548\u5185\u5b58\u5730\u5740\u89e3\u5f15\u7528\u6f0f\u6d1e"
}

CVE-2019-20022 (GCVE-0-2019-20022)

Vulnerability from cvelistv5 – Published: 2019-12-27 01:11 – Updated: 2024-08-05 02:32

Summary

An invalid memory address dereference was discovered in load_pnm in frompnm.c in libsixel before 1.8.3.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/saitoha/libsixel/issues/108	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2024-08-05T02:32:10.498Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/saitoha/libsixel/issues/108"
          }
        ],
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      }
    ],
    "cna": {
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      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/saitoha/libsixel/issues/108"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2019-20022",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
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                "product": {
                  "product_data": [
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  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
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    "dateReserved": "2019-12-27T00:00:00.000Z",
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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.