CVE-2024-52797— Opencast 安全漏洞
一分钟漏洞结论
影响对象
opencast opencast
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Opencast是Opencast组织的一款用于大规模自动视频捕获，管理和分发的直播视频支撑软件。 Opencast存在安全漏洞，该漏洞源于会生成语法上无效的Elasticsearch查询语句，从而导致拒绝服务。
可能的 ATT&CK 技术 1 AI
T1499 · Endpoint Denial of Service
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一、 漏洞 CVE-2024-52797 基础信息
漏洞信息
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Vulnerability Title
Searching Opencast may cause a denial of service
来源: CVE Program / CVE List V5
Vulnerability Description
Opencast is free and open source software for automated video capture and distribution. First noticed in Opencast 13 and 14, Opencast's Elasticsearch integration may generate syntactically invalid Elasticsearch queries in relation to previously acceptable search queries. From Opencast version 11.4 and newer, Elasticsearch queries are retried a configurable number of times in the case of error to handle temporary losses of connection to Elasticsearch. These invalid queries would fail, causing the retry mechanism to begin requerying with the same syntactically invalid query immediately, in an infinite loop. This causes a massive increase in log size which can in some cases cause a denial of service due to disk exhaustion.
Opencast 13.10 and Opencast 14.3 contain patches which address the base issue, with Opencast 16.7 containing changes which harmonize the search behaviour between the admin UI and external API. Users are strongly recommended to upgrade as soon as possible if running versions prior to 13.10 or 14.3. While the relevant endpoints require (by default) `ROLE_ADMIN` or `ROLE_API_SERIES_VIEW`, the problem queries are otherwise innocuous. This issue could be easily triggered by normal administrative work on an affected Opencast system. Those who run a version newer than 13.10 and 14.3 and see different results when searching in their admin UI vs your external API or LMS, may resolve the issue by upgrading to 16.7. No known workarounds for the vulnerability are available.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
来源: CVE Program / CVE List V5
Vulnerability Title
Opencast 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Opencast是Opencast组织的一款用于大规模自动视频捕获，管理和分发的直播视频支撑软件。 Opencast存在安全漏洞，该漏洞源于会生成语法上无效的Elasticsearch查询语句，从而导致拒绝服务。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2024-52797 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2024-52797 补丁与修复 (1)
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Merge commit from fork · opencast/opencast@3d5ebd1 · GitHub x_refsource_MISC
CVE-2024-52797 厂商安全公告 (1)
IV. Related Vulnerabilities
V. Comments for CVE-2024-52797
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