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SnykCVE-2020-7695

HistoryJul 27, 2020 - 12:15 p.m.

CVE-2020-7695

2020-07-2712:15:11

CWE-74

snyk

web.nvd.nist.gov

uvicorn

cve-2020-7695

security vulnerability

http response splitting

nvd

CVSS2

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

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

5.2

Confidence

High

EPSS

0.001

Percentile

38.8%

JSON

Uvicorn before 0.11.7 is vulnerable to HTTP response splitting. CRLF sequences are not escaped in the value of HTTP headers. Attackers can exploit this to add arbitrary headers to HTTP responses, or even return an arbitrary response body, whenever crafted input is used to construct HTTP headers.

Affected configurations

Nvd

Node

encodeuvicornRange<0.11.7

VendorProductVersionCPE
encodeuvicorn*cpe:2.3:a:encode:uvicorn:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
encode	uvicorn	*	cpe:2.3:a:encode:uvicorn::::::::

CNA Affected

[
  {
    "product": "uvicorn",
    "vendor": "n/a",
    "versions": [
      {
        "lessThan": "unspecified",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      }
    ]
  }
]

References

github.com/encode/uvicorn

snyk.io/vuln/SNYK-PYTHON-UVICORN-570471

CVSS2

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

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

5.2

Confidence

High

EPSS

0.001

Percentile

38.8%

JSON

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