CVE-2022-39250

Matrix JavaScript SDK is the Matrix Client-Server software development kit SDK for JavaScript. Prior to version 19.7.0, an attacker cooperating with a malicious homeserver could interfere with the verification flow between two users, injecting its own cross-signing user identity in place of one o...

CVE-2022-39250

CVE-2022-39250 corresponds to a vulnerability in the Matrix JavaScript SDK (matrix-js-sdk) prior to version 19.7.0. The issue arises from checking and signing user identities and devices in two separate steps, and not consistently fixing the signing key between steps, enabling a malicious homeser...

CVE-2022-39250 Matrix JavaScript SDK vulnerable to key/device identifier confusion in SAS verification

Matrix JavaScript SDK is the Matrix Client-Server software development kit SDK for JavaScript. Prior to version 19.7.0, an attacker cooperating with a malicious homeserver could interfere with the verification flow between two users, injecting its own cross-signing user identity in place of one o...

CVE-2022-39250

Matrix JavaScript SDK is the Matrix Client-Server software development kit SDK for JavaScript. Prior to version 19.7.0, an attacker cooperating with a malicious homeserver could interfere with the verification flow between two users, injecting its own cross-signing user identity in place of one o...

UBUNTU-CVE-2022-39264

nheko is a desktop client for the Matrix communication application. All versions below 0.10.2 are vulnerable homeservers inserting malicious secrets, which could lead to man-in-the-middle attacks. Users can upgrade to version 0.10.2 to protect against this issue. As a workaround, one may apply th...

Type confusion

Matrix iOS SDK allows developers to build iOS apps compatible with Matrix. Prior to version 0.23.19, an attacker cooperating with a malicious homeserver can construct messages that legitimately appear to have come from another person, without any indication such as a grey shield. Additionally, a...

CVE-2022-39255 Matrix iOS SDK vulnerable ton Olm/Megolm protocol confusion

Matrix iOS SDK allows developers to build iOS apps compatible with Matrix. Prior to version 0.23.19, an attacker cooperating with a malicious homeserver can construct messages that legitimately appear to have come from another person, without any indication such as a grey shield. Additionally, a...

CVE-2022-39248 matrix-android-sdk2 vulnerable to Olm/Megolm protocol confusion

matrix-android-sdk2 is the Matrix SDK for Android. Prior to version 1.5.1, an attacker cooperating with a malicious homeserver can construct messages that legitimately appear to have come from another person, without any indication such as a grey shield. Additionally, a sophisticated attacker...

CVE-2022-39246 matrix-android-sdk2 vulnerable to impersonation via forwarded Megolm sessions

matrix-android-sdk2 is the Matrix SDK for Android. Prior to version 1.5.1, an attacker cooperating with a malicious homeserver can construct messages appearing to have come from another person. Such messages will be marked with a grey shield on some platforms, but this may be missing in others...

CVE-2022-39264 nheko vulnerable to secret poisoning using MITM on secret requests by the homeserver

nheko is a desktop client for the Matrix communication application. All versions below 0.10.2 are vulnerable homeservers inserting malicious secrets, which could lead to man-in-the-middle attacks. Users can upgrade to version 0.10.2 to protect against this issue. As a workaround, one may apply th...

CVE-2022-39264 nheko vulnerable to secret poisoning using MITM on secret requests by the homeserver

nheko is a desktop client for the Matrix communication application. All versions below 0.10.2 are vulnerable homeservers inserting malicious secrets, which could lead to man-in-the-middle attacks. Users can upgrade to version 0.10.2 to protect against this issue. As a workaround, one may apply th...

CVE-2022-39251 Matrix Javascript SDK vulnerable to Olm/Megolm protocol confusion

Matrix Javascript SDK is the Matrix Client-Server SDK for JavaScript. Prior to version 19.7.0, an attacker cooperating with a malicious homeserver can construct messages that legitimately appear to have come from another person, without any indication such as a grey shield. Additionally, a...

CVE-2022-39249

Matrix Javascript SDK is the Matrix Client-Server SDK for JavaScript. Prior to version 19.7.0, an attacker cooperating with a malicious homeserver can construct messages appearing to have come from another person. Such messages will be marked with a grey shield on some platforms, but this may be...

CVE-2022-39249

Matrix Javascript SDK is the Matrix Client-Server SDK for JavaScript. Prior to version 19.7.0, an attacker cooperating with a malicious homeserver can construct messages appearing to have come from another person. Such messages will be marked with a grey shield on some platforms, but this may be...

CVE-2022-39249 Matrix Javascript SDK vulnerable to impersonation via forwarded Megolm sessions

Matrix Javascript SDK is the Matrix Client-Server SDK for JavaScript. Prior to version 19.7.0, an attacker cooperating with a malicious homeserver can construct messages appearing to have come from another person. Such messages will be marked with a grey shield on some platforms, but this may be...

GHSA-PFW4-XJGM-267C Dendrite signature checks not applied to some retrieved missing events

Impact Events retrieved from a remote homeserver using /getmissingevents did not have their signatures verified correctly. This could potentially allow a remote homeserver to provide invalid/modified events to Dendrite via this endpoint. Note that this does not apply to events retrieved through...

Signature Verification Bypass

github.com/matrix-org/dendrite is vulnerable to signature verification bypass. A remote attacker is able to provide invalid or modified malicious events to spread via an endpoint because the events retrieved from a remote homeserver using the /getmissingevents path does not verify their signature...

CVE-2022-39200

Dendrite is a Matrix homeserver written in Go. In affected versions events retrieved from a remote homeserver using the /getmissingevents path did not have their signatures verified correctly. This could potentially allow a remote homeserver to provide invalid/modified events to Dendrite via this...

Design/Logic Flaw

Dendrite is a Matrix homeserver written in Go. In affected versions events retrieved from a remote homeserver using the /getmissingevents path did not have their signatures verified correctly. This could potentially allow a remote homeserver to provide invalid/modified events to Dendrite via this...

CVE-2022-39200 Signature checks not applied to some retrieved missing events

Dendrite is a Matrix homeserver written in Go. In affected versions events retrieved from a remote homeserver using the /getmissingevents path did not have their signatures verified correctly. This could potentially allow a remote homeserver to provide invalid/modified events to Dendrite via this...