RSA-Encrypted Nonce Disclosure Vulnerability in Cisco IOS Software and Cisco IOS XE Software

CVE-2018-0131 · MEDIUM Severity

AV:N/AC:M/AU:N/C:P/I:N/A:N

A vulnerability in the implementation of RSA-encrypted nonces in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to obtain the encrypted nonces of an Internet Key Exchange Version 1 (IKEv1) session. The vulnerability exists because the affected software responds incorrectly to decryption failures. An attacker could exploit this vulnerability sending crafted ciphertexts to a device configured with IKEv1 that uses RSA-encrypted nonces. A successful exploit could allow the attacker to obtain the encrypted nonces. Cisco Bug IDs: CSCve77140.

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