CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 1CVE-2021-41119 – DoS vulnerabiliity in wire-server json parser
https://notcve.org/view.php?id=CVE-2021-41119
Wire-server is the system server for the wire back-end services. Releases prior to v2022-03-01 are subject to a denial of service attack via a crafted object causing a hash collision. This collision causes the server to spend at least quadratic time parsing it which can lead to a denial of service for a heavily used server. The issue has been fixed in wire-server 2022-03-01 and is already deployed on all Wire managed services. On premise instances of wire-server need to be updated to 2022-03-01, so that their backends are no longer affected. • https://cs-syd.eu/posts/2021-09-11-json-vulnerability https://github.com/wireapp/wire-server/security/advisories/GHSA-phxv-pffh-fq2r • CWE-400: Uncontrolled Resource Consumption •
CVSS: 9.1EPSS: 0%CPEs: 1EXPL: 0CVE-2022-23610 – Improper Verification of Cryptographic Signature in wire-server
https://notcve.org/view.php?id=CVE-2022-23610
wire-server provides back end services for Wire, an open source messenger. In versions of wire-server prior to the 2022-01-27 release, it was possible to craft DSA Signatures to bypass SAML SSO and impersonate any Wire user with SAML credentials. In teams with SAML, but without SCIM, it was possible to create new accounts with fake SAML credentials. Under certain conditions that can be established by an attacker, an upstream library for parsing, rendering, signing, and validating SAML XML data was accepting public keys as trusted that were provided by the attacker in the signature. As a consequence, the attacker could login as any user in any Wire team with SAML SSO enabled. • https://github.com/wireapp/wire-server/releases/tag/v2022-01-27 https://github.com/wireapp/wire-server/security/advisories/GHSA-9jg9-9g37-4424 • CWE-347: Improper Verification of Cryptographic Signature •
CVSS: 9.8EPSS: 0%CPEs: 1EXPL: 0CVE-2021-41100 – Account takeover when having only access to a user's short lived token in wire-server
https://notcve.org/view.php?id=CVE-2021-41100
Wire-server is the backing server for the open source wire secure messaging application. In affected versions it is possible to trigger email address change of a user with only the short-lived session token in the `Authorization` header. As the short-lived token is only meant as means of authentication by the client for less critical requests to the backend, the ability to change the email address with a short-lived token constitutes a privilege escalation attack. Since the attacker can change the password after setting the email address to one that they control, changing the email address can result in an account takeover by the attacker. Short-lived tokens can be requested from the backend by Wire clients using the long lived tokens, after which the long lived tokens can be stored securely, for example on the devices key chain. • https://github.com/wireapp/wire-server/security/advisories/GHSA-9rm2-w6pq-333m • CWE-285: Improper Authorization CWE-613: Insufficient Session Expiration •