Deskflow vulnerabilities

Deskflow, a keyboard and mouse sharing app, has a remote denial of service (DoS) vulnerability prior to version 1.26.0.167. Attackers can disrupt input delivery to all connected screens by sending malformed TCP connections.

Deskflow is a keyboard and mouse sharing app. From 1.17.0 until continuous build 1.26.0.300, a connected peer can send repeated DCLP DataChunk messages to ClipboardChunk::assemble(), causing the server or client to append data beyond the declared DataStart size and configured clipboard limit, exhausting receiver memory. This issue is fixed in continuous build 1.26.0.300.

Deskflow is a keyboard and mouse sharing app. Prior to continuous build 1.26.0.299, a remote unauthenticated Deskflow server can send kMsgDSetOptions (DSOP) values to ServerProxy::setOptions() in src/lib/client/ServerProxy.cpp so that the value following a modifier option poisons m_modifierTranslationTable, after which ServerProxy::translateKey() or ServerProxy::translateModifierMask() indexes the seven-row s_translationTable or s_masks arrays out of bounds, disclosing four bytes at an attacker-selected relative offset or crashing the connected client; an odd option count also causes an out-of-bounds OptionsList read. This issue is fixed in continuous build 1.26.0.299.

Deskflow from version 1.17.0 until continuous build 1.26.0.296 has a vulnerability where a malicious Deskflow server can send an odd-length DSOP vector, causing an out-of-bounds read and crashing the connected client.