`Soulmate::writeMessageInSharedSpace` overrides the previous message, leading to unviewed message when other soulmate modifes it without reading.
Summary
Soulmate::writeMessageInSharedSpace modifies the previous message, thus if the other soulmate writes a new message then they will not be able to read the message via Soulmate::readMessageInSharedSpace written by their soulmate.
Vulnerability Details
The vulnerability is present in the Soulmate::writeMessageInSharedSpace function which modifies the previously written message by anyone of the soulmate.
It occurs because if the other soulmate writes the message before reading, then they will not able to view the message via Soulmate::readMessageInSharedSpace which was written by the first soulmate.
Impact
Soulmates will not be able to read messages effectively.
Tools Used
Manual Review
Recommendations
Allow the soulmates to write new message only if the other soulmate have read it.
Rewards breakdown
Live
The contest is live. Earn rewards by submitting a finding.
Appeals
This is your time to appeal against judgements on your submissions.
Appeals Review
Appeals are being carefully reviewed by our judges.