Vulnerability Name:

CVE-2018-0131 (CCN-148277)

Assigned:2017-11-27
Published:2018-08-13
Updated:2019-10-09
Summary: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.
CVSS v3 Severity:5.9 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
5.2 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
5.9 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
5.2 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
5.4 Medium (CCN CVSS v2 Vector: AV:N/AC:H/Au:N/C:C/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-326
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2018-0131

Source: BID
Type: Third Party Advisory, VDB Entry
105074

Source: CCN
Type: BID-105074
Cisco IOS and IOS XE Software CVE-2018-0131 Information Disclosure Vulnerability

Source: SECTRACK
Type: Third Party Advisory, VDB Entry
1041539

Source: XF
Type: UNKNOWN
cisco-cve20180131-info-disc(148277)

Source: CCN
Type: Cisco Security Advisory cisco-sa-20180813-rsa-nonce
Cisco IOS and IOS XE Software Internet Key Exchange Version 1 RSA-Encrypted Nonces Vulnerability

Source: CISCO
Type: Vendor Advisory
20180813 Cisco IOS and IOS XE Software Internet Key Exchange Version 1 RSA-Encrypted Nonces Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/o:cisco:ios:15.5(3)s:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:15.5(3)s:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:cisco:ios_software:*:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe_software:*:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco ios 15.5(3)s
    cisco ios xe 15.5(3)s
    cisco ios software *
    cisco ios xe software *