CVE-2020-26254 omniauth-apple allows attacker to fake their email address during authentication

2020-12-0814:20:13

CWE-290

GitHub_M

www.cve.org

omniauth-apple

authentication

attacker

email address

vulnerability

cve-2020-26254

rubygem

CVSS3

7.7

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

EPSS

0.001

Percentile

48.4%

JSON

omniauth-apple is the OmniAuth strategy for “Sign In with Apple” (RubyGem omniauth-apple). In omniauth-apple before version 1.0.1 attackers can fake their email address during authentication. This vulnerability impacts applications using the omniauth-apple strategy of OmniAuth and using the info.email field of OmniAuth’s Auth Hash Schema for any kind of identification. The value of this field may be set to any value of the attacker’s choice including email addresses of other users. Applications not using info.email for identification but are instead using the uid field are not impacted in the same manner. Note, these applications may still be negatively affected if the value of info.email is being used for other purposes. Applications using affected versions of omniauth-apple are advised to upgrade to omniauth-apple version 1.0.1 or later.

CNA Affected

[
  {
    "product": "omniauth-apple",
    "vendor": "nhosoya",
    "versions": [
      {
        "status": "affected",
        "version": "< 1.0.1"
      }
    ]
  }
]