CVE-2021-32623— Opencast 安全漏洞

Opencast vulnerable to billion laughs attack (XML bomb)

Opencast is a free and open source solution for automated video capture and distribution. Versions of Opencast prior to 9.6 are vulnerable to the billion laughs attack, which allows an attacker to easily execute a (seemingly permanent) denial of service attack, essentially taking down Opencast using a single HTTP request. To exploit this, users need to have ingest privileges, limiting the group of potential attackers The problem has been fixed in Opencast 9.6. There is no known workaround for this issue.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

DTD中递归实体索引的不恰当限制(XML实体扩展)

Opencast 安全漏洞

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 9.6版本及之前版本存在安全漏洞，该漏洞源于Opencast很容易受到the billion laughs attack（一种DoS攻击）。

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