Design/Logic Flaw

Coturn is free open source implementation of TURN and STUN Server. Coturn before version 4.5.2 by default does not allow peers to connect and relay packets to loopback addresses in the range of 127.x.x.x. However, it was observed that when sending a CONNECT request with the XOR-PEER-ADDRESS value...

CVE-2020-26262

Technical details about CVE-2020-26262 are not publicly provided in the supplied documents; no affected versions or fixes are confirmed here. Monitor for updates from official advisories.

CVE-2020-26262

Coturn is free open source implementation of TURN and STUN Server. Coturn before version 4.5.2 by default does not allow peers to connect and relay packets to loopback addresses in the range of 127.x.x.x. However, it was observed that when sending a CONNECT request with the XOR-PEER-ADDRESS value...

Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : coTURN vulnerability (USN-4690-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-4690-1 advisory. It was discovered that coTURN allowed peers to connect and relay packets to loopback addresses in the range of 127.x.x.x. A malicious user...

Coturn 4.5.1.x Access Control Bypass

Loopback access control bypass in coturn by using 0.0.0.0, ::1 or :: as the peer address - Fixed version: 4.5.2 - Enable Security Advisory: https://github.com/EnableSecurity/advisories/tree/master/ES2021-01-coturn-access-control-bypass - Coturn Security Advisory:...

CVE-2020-15233 OAuth2 Redirect URL validity does not respect query parameters and character casing for loopback addresses

ORY Fosite is a security first OAuth2 & OpenID Connect framework for Go. In Fosite from version 0.30.2 and before version 0.34.1, there is an issue in which an an attacker can override the registered redirect URL by performing an OAuth flow and requesting a redirect URL that is to the loopback...

Bypassing blacklists based on IPy

IPy is a Python "class and tools for handling of IPv4 and IPv6 addresses and networks" https://github.com/haypo/python-ipy. This library is sometimes used to implement blacklists forbidding internal, private or loopback addresses. Using octal encoding supported by urllib2, it is possible to bypas...