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CiscoCVE-2022-20742

HistoryMay 03, 2022 - 4:15 a.m.

CVE-2022-20742

2022-05-0304:15:09

CWE-325

cisco

web.nvd.nist.gov

cisco

asa

firepower

vpn

library

vulnerability

cve-2022-20742

ipsec

ikev2

gcm

cipher

remote attack

data modification

cryptanalysis

CVSS2

5.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

7.4

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

AI Score

7.2

Confidence

High

EPSS

0.001

Percentile

47.3%

JSON

A vulnerability in an IPsec VPN library of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to read or modify data within an IPsec IKEv2 VPN tunnel. This vulnerability is due to an improper implementation of Galois/Counter Mode (GCM) ciphers. An attacker in a man-in-the-middle position could exploit this vulnerability by intercepting a sufficient number of encrypted messages across an affected IPsec IKEv2 VPN tunnel and then using cryptanalytic techniques to break the encryption. A successful exploit could allow the attacker to decrypt, read, modify, and re-encrypt data that is transmitted across an affected IPsec IKEv2 VPN tunnel.

Affected configurations

Nvd

Node

ciscofirepower_threat_defenseRange<6.4.0.15

ciscofirepower_threat_defenseRange6.5.0–6.6.5.2

ciscofirepower_threat_defenseRange7.0.0–7.0.2

ciscofirepower_threat_defenseMatch7.1.0

ciscoadaptive_security_appliance_softwareRange<9.12.4.38

ciscoadaptive_security_appliance_softwareRange9.13.0–9.14.4

ciscoadaptive_security_appliance_softwareRange9.15.0–9.15.1.21

ciscoadaptive_security_appliance_softwareRange9.16.0–9.16.2.14

ciscoadaptive_security_appliance_softwareRange9.17.0–9.17.1.7

VendorProductVersionCPE
ciscofirepower_threat_defense*cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:*
ciscofirepower_threat_defense7.1.0cpe:2.3:a:cisco:firepower_threat_defense:7.1.0:*:*:*:*:*:*:*
ciscoadaptive_security_appliance_software*cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
cisco	firepower_threat_defense	*	cpe:2.3:a:cisco:firepower_threat_defense::::::::
cisco	firepower_threat_defense	7.1.0	cpe:2.3:a:cisco:firepower_threat_defense:7.1.0:::::::*
cisco	adaptive_security_appliance_software	*	cpe:2.3:o:cisco:adaptive_security_appliance_software::::::::

CNA Affected

[
  {
    "product": "Cisco Adaptive Security Appliance (ASA) Software",
    "vendor": "Cisco",
    "versions": [
      {
        "status": "affected",
        "version": "n/a"
      }
    ]
  }
]

References

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ipsec-mitm-CKnLr4

Social References

CVSS2

5.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

7.4

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

AI Score

7.2

Confidence

High

EPSS

0.001

Percentile

47.3%

JSON

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