Description
The web-based management (WBM) interface in Unify (former Siemens) OpenStage SIP and OpenScape Desk Phone IP V3 devices before R3.32.0 generates session cookies with insufficient entropy, which makes it easier for remote attackers to hijack sessions via a brute-force attack.
References (2)
Core 2
Core References
Mitigation, Vendor Advisory x_refsource_confirm
https://networks.unify.com/security/advisories/OBSO-1501-02.pdf
Third Party Advisory x_refsource_misc
https://www.modzero.ch/advisories/MZ-14-02-Siemens-Unify-OpenStage.txt
Scores
CVSS v3
8.1
EPSS
0.0163
EPSS Percentile
73.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-331
Status
published
Products (2)
unify/openscape_desk_phone_ip_sip
< r3.32.0
unify/openstage_sip
< r3.32.0
Published
Apr 12, 2018
Tracked Since
Feb 18, 2026