漏洞信息
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Vulnerability Title
Lemmy: Blocked users can edit private messages sent before the block
Vulnerability Description
Lemmy is a link aggregator and forum for the fediverse. Prior to 0.19.19 and 1.0.0-alpha.18, Lemmy blocks new private messages from a sender after the recipient blocks that sender, but the edit path skips the same block check. create_private_message checks the recipient's block list with PersonActions::read_block before inserting a message, while edit_private_message in crates/api/api_crud/src/private_message/update.rs only checks that the caller is orig_private_message.creator_id. The update then writes new content and returns the modified PrivateMessageView without consulting the recipient's block list, allowing a blocked sender to keep changing an old message that the recipient can still see and providing a post-block harassment path. This issue is fixed in versions 0.19.19 and 1.0.0-alpha.18.
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Vulnerability Type
授权机制缺失
Vulnerability Title
LemmyNet lemmy 授权问题漏洞
Vulnerability Description
LemmyNet lemmy是LemmyNet组织的一个去中心化的链接聚合与讨论社区平台。 LemmyNet lemmy 0.19.19之前版本和1.0.0-alpha.18之前版本存在授权问题漏洞,该漏洞源于编辑私信路径未正确检查接收者阻止列表,导致被阻止的发件人可以继续修改旧消息,造成阻止后的骚扰。
CVSS Information
N/A
Vulnerability Type
N/A