漏洞信息
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Vulnerability Title
Mastodon: SSRF protection bypass on older Ruby versions
Vulnerability Description
Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.5.10, 4.4.17, and 4.3.23, when using Ruby versions older than 3.4, PrivateAddressCheck.private_address? returns false for IPv4-mapped IPv6 addresses (::ffff:a.b.c.d) corresponding to some private IPv4 addresses, depending on Ruby version, this can include loopback, RFC1918 private networks, and link-local space. An attacker who controls DNS for any domain can publish an AAAA record with such a mapped address; any outbound HTTP fetch Mastodon performs against that hostname then opens a real TCP connection to the underlying IPv4 address, including 127.0.0.1 and cloud-metadata endpoints such as 169.254.169.254. This vulnerability is fixed in 4.5.10, 4.4.17, and 4.3.23.
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Vulnerability Type
不完整的黑名单
Vulnerability Title
Mastodon 输入验证错误漏洞
Vulnerability Description
Mastodon是Mastodon组织的一款去中心化社交网络服务器软件。 Mastodon 4.5.10之前版本、4.4.17之前版本和4.3.23之前版本存在安全漏洞,该漏洞源于使用Ruby 3.4之前版本时,PrivateAddressCheck.private_address?函数对IPv4映射的IPv6地址验证错误,可能导致控制DNS的攻击者通过发布包含映射地址的AAAA记录,使Mastodon发出的出站HTTP请求建立到内部IPv4地址的TCP连接,包括回环地址和云元数据端点,从而导致服务端请求
CVSS Information
N/A
Vulnerability Type
N/A