漏洞信息
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Vulnerability Title
Mastodon: SSRF Protection Bypass via IPv4-compatible IPv6 Addresses
Vulnerability Description
Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.4.21, 4.5.14, 4.6.4, and 4.7.0-beta.1, PrivateAddressCheck.private_address? in app/lib/private_address_check.rb normalized IPv4-mapped IPv6 addresses but did not recognize IPv4-compatible IPv6 addresses with IPAddr#ipv4_compat?. An attacker could supply an address in the omitted range to bypass the ALLOWED_PRIVATE_ADDRESSES protection and make Mastodon send HTTP requests to loopback interfaces, potentially accessing private resources and services. Exploitation requires a system that supports the obsolete IPv4-compatible IPv6 mechanism. This issue is fixed in versions 4.4.21, 4.5.14, 4.6.4, and 4.7.0-beta.1.
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L
Vulnerability Type
服务端请求伪造(SSRF)
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 4.4.21之前版本、4.5.14之前版本、4.6.4之前版本和4.7.0-beta.1之前版本存在安全漏洞,该漏洞源于PrivateAddressCheck.private_address?方法未识别IPv4兼容IPv6地址,导致攻击者绕过ALLOWED_PRIVATE_ADDRESSES保护,使Mastodon发送HTTP请求到回环接口,可能访问私有资源和服务。
CVSS Information
N/A
Vulnerability Type
N/A