Wiesemann & Theis: Small number space for allocating session id in Com-Server family
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.8%
exploitation probability
0.8%top 45% of all CVEs
observed exploitation
nono source reports it
Multiple W&T products of the Comserver Series use a small number space for allocating sessions ids. After login of an user an unathenticated remote attacker can brute force the users session id and get access to his account on the the device. As the user needs to log in for the attack to be successful a user interaction is required.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
Wiesemann & Theis · AT-Modem-EmulatorWiesemann & Theis · Com-Server ++Wiesemann & Theis · Com-Server 20mAWiesemann & Theis · Com-Server Highspeed 100BaseFXWiesemann & Theis · Com-Server Highspeed 100BaseLXWiesemann & Theis · Com-Server Highspeed 19" 1PortWiesemann & Theis · Com-Server Highspeed 19" 4PortWiesemann & Theis · Com-Server Highspeed CompactWiesemann & Theis · Com-Server Highspeed IndustryWiesemann & Theis · Com-Server Highspeed IsolatedWiesemann & Theis · Com-Server Highspeed OEMWiesemann & Theis · Com-Server Highspeed Office 1 PortWiesemann & Theis · Com-Server Highspeed Office 4 PortWiesemann & Theis · Com-Server Highspeed PoEWiesemann & Theis · Com-Server LCWiesemann & Theis · Com-Server PoE 3 x IsolatedWiesemann & Theis · Com-Server UL