CVE-2023-33982

MEDIUM

Bramble Handshake Protocol <1.5.3 - Info Disclosure

Title source: llm

Description

Bramble Handshake Protocol (BHP) in Briar before 1.5.3 is not forward secure: eavesdroppers can decrypt network traffic between two accounts if they later compromise both accounts. NOTE: the eavesdropping is typically impractical because BHP runs over an encrypted session that uses the Tor hidden service protocol.

References (2)

[Vendor Advisory] https://briarproject.org/news/2023-three-security-issues-found-and-fixed/

[Exploit, Technical Description, Third Party Advisory] https://ethz.ch/content/dam/ethz/special-interest/infk/inst-infsec/appliedcrypto/education/theses/report_YuanmingSong.pdf

Scores

CVSS v3 5.9

EPSS 0.0013

EPSS Percentile 31.9%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-326

Status published

Products (1)

briarproject/briar < 1.5.3

Published May 24, 2023

Tracked Since Feb 18, 2026