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cvelistCiscoCVELIST:CVE-2020-3308
HistoryMay 06, 2020 - 4:50 p.m.

CVE-2020-3308 Cisco Firepower Threat Defense Software Signature Verification Bypass Vulnerability

2020-05-0616:50:29
CWE-347
cisco
www.cve.org
4

CVSS3

4.9

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

AI Score

5.1

Confidence

High

EPSS

0.001

Percentile

34.4%

A vulnerability in the Image Signature Verification feature of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker with administrator-level credentials to install a malicious software patch on an affected device. The vulnerability is due to improper verification of digital signatures for patch images. An attacker could exploit this vulnerability by crafting an unsigned software patch to bypass signature checks and loading it on an affected device. A successful exploit could allow the attacker to boot a malicious software patch image.

CNA Affected

[
  {
    "product": "Cisco Firepower Threat Defense Software",
    "vendor": "Cisco",
    "versions": [
      {
        "status": "affected",
        "version": "n/a"
      }
    ]
  }
]

CVSS3

4.9

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

AI Score

5.1

Confidence

High

EPSS

0.001

Percentile

34.4%

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