Vulnerability-Lookup

CNVD-2018-06659

Vulnerability from cnvd - Published: 2018-03-29

Title

Exempi空指针引用漏洞

Description

Exempi是一个基于Adobe XMP SDK的XMP的开源实现。 Exempi 2.4.4及之前版本中存在安全漏洞，该漏洞源于XMPFiles/source/FormatSupport/WEBP_Support.cpp文件未能检测位流中是否存在空值。攻击者可利用该漏洞造成拒绝服务（空指针逆向引用）。

Severity

中

Patch Name

Exempi空指针引用漏洞的补丁

Patch Description

Exempi是一个基于Adobe XMP SDK的XMP的开源实现。 Exempi 2.4.4及之前版本中存在安全漏洞，该漏洞源于XMPFiles/source/FormatSupport/WEBP_Support.cpp文件未能检测位流中是否存在空值。攻击者可利用该漏洞造成拒绝服务（空指针逆向引用）。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

厂商已发布漏洞修复程序，请及时关注更新： https://cgit.freedesktop.org/exempi/commit/?id=aabedb5e749dd59112a3fe1e8e08f2d934f56666

Reference

https://nvd.nist.gov/vuln/detail/CVE-2018-7731

Impacted products

Name
Exempi Exempi <=2.4.4

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-7731"
    }
  },
  "description": "Exempi\u662f\u4e00\u4e2a\u57fa\u4e8eAdobe XMP SDK\u7684XMP\u7684\u5f00\u6e90\u5b9e\u73b0\u3002\r\n\r\nExempi 2.4.4\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eXMPFiles/source/FormatSupport/WEBP_Support.cpp\u6587\u4ef6\u672a\u80fd\u68c0\u6d4b\u4f4d\u6d41\u4e2d\u662f\u5426\u5b58\u5728\u7a7a\u503c\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\uff09\u3002",
  "discovererName": "Leo",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://cgit.freedesktop.org/exempi/commit/?id=aabedb5e749dd59112a3fe1e8e08f2d934f56666",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-06659",
  "openTime": "2018-03-29",
  "patchDescription": "Exempi\u662f\u4e00\u4e2a\u57fa\u4e8eAdobe XMP SDK\u7684XMP\u7684\u5f00\u6e90\u5b9e\u73b0\u3002\r\n\r\nExempi 2.4.4\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eXMPFiles/source/FormatSupport/WEBP_Support.cpp\u6587\u4ef6\u672a\u80fd\u68c0\u6d4b\u4f4d\u6d41\u4e2d\u662f\u5426\u5b58\u5728\u7a7a\u503c\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\uff09\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": "Exempi\u7a7a\u6307\u9488\u5f15\u7528\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Exempi Exempi \u003c=2.4.4"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-7731",
  "serverity": "\u4e2d",
  "submitTime": "2018-03-07",
  "title": "Exempi\u7a7a\u6307\u9488\u5f15\u7528\u6f0f\u6d1e"
}

CVE-2018-7731 (GCVE-0-2018-7731)

Vulnerability from cvelistv5 – Published: 2018-03-06 18:00 – Updated: 2024-08-05 06:31

Summary

An issue was discovered in Exempi through 2.4.4. XMPFiles/source/FormatSupport/WEBP_Support.cpp does not check whether a bitstream has a NULL value, leading to a NULL pointer dereference in the WEBP::VP8XChunk class.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

4 references

URL	Tags
https://cgit.freedesktop.org/exempi/commit/?id=aa…	x_refsource_MISC
https://usn.ubuntu.com/3668-1/	vendor-advisoryx_refsource_UBUNTU
https://bugs.freedesktop.org/show_bug.cgi?id=105247	x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA

Date Public

2018-03-06 00:00

Show details on NVD website

JSON

To clipboard

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            "url": "https://bugs.freedesktop.org/show_bug.cgi?id=105247"
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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.