PairDrop through 1.11.2 contains an IP spoofing vulnerability in Peer._setIP that allows remote attackers to join other networks' discovery rooms by supplying a forged cf-connecting-ip header. Attackers who know a victim's public IP can appear as a local device on self-hosted instances not behind Cloudflare to send or receive files.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
Passive
Minimal interaction
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products
schlagmichdoch:pairdrop
References 5
https://github.com/schlagmichdoch/PairDrop
disclosure@vulncheck.com
https://github.com/schlagmichdoch/PairDrop/blob/4862ba3067be1a0f2e0d1e94861dc92…
disclosure@vulncheck.com
https://github.com/schlagmichdoch/PairDrop/blob/4862ba3067be1a0f2e0d1e94861dc92…
disclosure@vulncheck.com
https://github.com/schlagmichdoch/PairDrop/issues/510
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/pairdrop-through-1.11.2-ip-spoofing-via-cf…
disclosure@vulncheck.com