Vulnerability Information
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Vulnerability Title
Alienbin: TTL Index Race Condition allows unauthorized deletion of other users data
Vulnerability Description
Alienbin is an anonymous code and text sharing web service. In 1.0.0 and earlier, the /save endpoint in server.js drops and recreates the MongoDB TTL index on the entire post collection for every new paste submission. When User B submits a paste with a short TTL (e.g., 30 seconds), the TTL index is recreated with expireAfterSeconds: 30 for all documents in the collection. This causes User A's paste (originally set to 7 days) to be deleted after 30 seconds. An attacker can intentionally delete all existing pastes by repeatedly submitting pastes with ttlOption=30s.
CVSS Information
N/A
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Vulnerability Title
Alienbin 竞争条件问题漏洞
Vulnerability Description
Alienbin是Blue-B个人开发者的一个匿名文本共享平台。 Alienbin 1.0.0及之前版本存在竞争条件问题漏洞，该漏洞源于TTL索引处理不当，可能导致攻击者通过重复提交短TTL粘贴来删除所有现有粘贴。
CVSS Information
N/A
Vulnerability Type
N/A