CVE-2021-48017: BSCW Server 5.0.0 to before 5.2.5, 7.0.0 to before 7.4.4

Affected technology

BSCW Server · 5.0.0 to before 5.2.5, 7.0.0 to before 7.4.4
OrbiTeam

Description’s affected range: before 5.2.5 and 7.x before 7.4.4

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Attackers can send GET requests to /pub/bscw.cgi/?op=theme with ../ sequences in style_name to read local files such as /etc/passwd. Vendor/CNA’s CVSS 4.0 assessment (base score 8.7/10) rates confidentiality impact as high; integrity and availability impact as none.