CAPEC-608: Cryptanalysis of Cellular Encryption
CAPEC版本: 3.9
更新日期: 2023-01-24
攻击模式描述
The use of cryptanalytic techniques to derive cryptographic keys or otherwise effectively defeat cellular encryption to reveal traffic content. Some cellular encryption algorithms such as A5/1 and A5/2 (specified for GSM use) are known to be vulnerable to such attacks and commercial tools are available to execute these attacks and decrypt mobile phone conversations in real-time. Newer encryption algorithms in use by UMTS and LTE are stronger and currently believed to be less vulnerable to these types of attacks. Note, however, that an attacker with a Cellular Rogue Base Station can force the use of weak cellular encryption even by newer mobile devices.
前提条件
- None
所需技能
后果影响
影响范围: Confidentiality
技术影响: Other
说明: Reveals IMSI and IMEI for tracking of retransmission device and enables further follow-on attacks by revealing black network control messages. (e.g., revealing IP addresses of enterprise servers for VOIP connectivity)
缓解措施
Use of hardened baseband firmware on retransmission device to detect and prevent the use of weak cellular encryption.
Monitor cellular RF interface to detect the usage of weaker-than-expected cellular encryption.