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cveGitHub_MCVE-2020-15093
HistoryJul 09, 2020 - 7:15 p.m.

CVE-2020-15093

2020-07-0919:15:11
CWE-347
GitHub_M
web.nvd.nist.gov
45
tough library
rust
crates.io
duplicate signatures
cve-2020-15093
cve-2020-6174
tuf
cryptographic signatures

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

8.6

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

8.8

Confidence

High

EPSS

0.002

Percentile

60.7%

The tough library (Rust/crates.io) prior to version 0.7.1 does not properly verify the threshold of cryptographic signatures. It allows an attacker to duplicate a valid signature in order to circumvent TUF requiring a minimum threshold of unique signatures before the metadata is considered valid. A fix is available in version 0.7.1. CVE-2020-6174 is assigned to the same vulnerability in the TUF reference implementation.

Affected configurations

Nvd
Vulners
Node
amazontoughRange<0.7.1rust
VendorProductVersionCPE
amazontough*cpe:2.3:a:amazon:tough:*:*:*:*:*:rust:*:*

CNA Affected

[
  {
    "product": "tough",
    "vendor": "awslabs",
    "versions": [
      {
        "status": "affected",
        "version": "< 0.7.1"
      }
    ]
  }
]

CVSS2

5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

8.6

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

8.8

Confidence

High

EPSS

0.002

Percentile

60.7%