Vulnerability-Lookup

CNVD-2025-20867

Vulnerability from cnvd - Published: 2025-09-09

Title

Apache Log4cxx跨站脚本漏洞

Description

Apache Log4cxx是美国阿帕奇（Apache）基金会的一个以Apache log4j为模式的C++ 日志框架。 Apache Log4cxx 1.5.0之前版本存在跨站脚本漏洞，该漏洞源于HTMLLayout未正确转义记录器名称，攻击者可利用该漏洞可能导致跨站脚本攻击。

Severity

中

Patch Name

Apache Log4cxx跨站脚本漏洞的补丁

Patch Description

Apache Log4cxx是美国阿帕奇（Apache）基金会的一个以Apache log4j为模式的C++ 日志框架。 Apache Log4cxx 1.5.0之前版本存在跨站脚本漏洞，该漏洞源于HTMLLayout未正确转义记录器名称，攻击者可利用该漏洞可能导致跨站脚本攻击。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://logging.apache.org/security.html#CVE

Reference

https://logging.apache.org/security.html#CVE-2025-54812

Impacted products

Name
Apache Log4cxx <1.5.0

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2025-54812",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2025-54812"
    }
  },
  "description": "Apache Log4cxx\u662f\u7f8e\u56fd\u963f\u5e15\u5947\uff08Apache\uff09\u57fa\u91d1\u4f1a\u7684\u4e00\u4e2a\u4ee5Apache log4j\u4e3a\u6a21\u5f0f\u7684C++ \u65e5\u5fd7\u6846\u67b6\u3002\n\nApache Log4cxx 1.5.0\u4e4b\u524d\u7248\u672c\u5b58\u5728\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eHTMLLayout\u672a\u6b63\u786e\u8f6c\u4e49\u8bb0\u5f55\u5668\u540d\u79f0\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u53ef\u80fd\u5bfc\u81f4\u8de8\u7ad9\u811a\u672c\u653b\u51fb\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://logging.apache.org/security.html#CVE",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2025-20867",
  "openTime": "2025-09-09",
  "patchDescription": "Apache Log4cxx\u662f\u7f8e\u56fd\u963f\u5e15\u5947\uff08Apache\uff09\u57fa\u91d1\u4f1a\u7684\u4e00\u4e2a\u4ee5Apache log4j\u4e3a\u6a21\u5f0f\u7684C++ \u65e5\u5fd7\u6846\u67b6\u3002\r\n\r\nApache Log4cxx 1.5.0\u4e4b\u524d\u7248\u672c\u5b58\u5728\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eHTMLLayout\u672a\u6b63\u786e\u8f6c\u4e49\u8bb0\u5f55\u5668\u540d\u79f0\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u53ef\u80fd\u5bfc\u81f4\u8de8\u7ad9\u811a\u672c\u653b\u51fb\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": "Apache Log4cxx\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Apache Log4cxx \u003c1.5.0"
  },
  "referenceLink": "https://logging.apache.org/security.html#CVE-2025-54812",
  "serverity": "\u4e2d",
  "submitTime": "2025-08-26",
  "title": "Apache Log4cxx\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e"
}

CVE-2025-54812 (GCVE-0-2025-54812)

Vulnerability from cvelistv5 – Published: 2025-08-22 18:46 – Updated: 2025-11-04 21:12

Title

Apache Log4cxx: Improper HTML escaping in HTMLLayout

Summary

Improper Output Neutralization for Logs vulnerability in Apache Log4cxx. When using HTMLLayout, logger names are not properly escaped when writing out to the HTML file. If untrusted data is used to retrieve the name of a logger, an attacker could theoretically inject HTML or Javascript in order to hide information from logs or steal data from the user. In order to activate this, the following sequence must occur: * Log4cxx is configured to use HTMLLayout. * Logger name comes from an untrusted string * Logger with compromised name logs a message * User opens the generated HTML log file in their browser, leading to potential XSS Because logger names are generally constant strings, we assess the impact to users as LOW This issue affects Apache Log4cxx: before 1.5.0. Users are recommended to upgrade to version 1.5.0, which fixes the issue.

Severity

2.1 (Low)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-08-22 19:07 UTC

CWE

CWE-117 - Improper Output Neutralization for Logs

Assigner

apache mitre root

References

5 references

URL	Tags
https://logging.apache.org/security.html#CVE-2025-54812	vendor-advisory
https://github.com/apache/logging-log4cxx/pull/509	patch
https://github.com/apache/logging-log4cxx/pull/514	patch
https://lists.debian.org/debian-lts-announce/2025…
http://www.openwall.com/lists/oss-security/2025/08/22/2

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache Log4cxx	Affected: 0 , < 1.5.0 (semver)

Credits

Sovereign Tech Agency

Show details on NVD website

JSON

To clipboard

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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.