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ubuntucveUbuntu.comUB:CVE-2020-15655
HistoryJul 29, 2020 - 12:00 a.m.

CVE-2020-15655

2020-07-2900:00:00
ubuntu.com
ubuntu.com
16
http request
web extension
cors checks
cross-origin
disclosure
firefox
thunderbird
vulnerability

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

EPSS

0.002

Percentile

61.4%

JSON

A redirected HTTP request which is observed or modified through a web
extension could bypass existing CORS checks, leading to potential
disclosure of cross-origin information. This vulnerability affects Firefox
ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.

Notes

Author Note
tyhicks mozjs contains a copy of the SpiderMonkey JavaScript engine
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchfirefox< 79.0+build1-0ubuntu0.18.04.1UNKNOWN
ubuntu20.04noarchfirefox< 79.0+build1-0ubuntu0.20.04.1UNKNOWN
ubuntu20.10noarchfirefox< 80.0.1+build1-0ubuntu1UNKNOWN
ubuntu21.04noarchfirefox< 80.0.1+build1-0ubuntu1UNKNOWN
ubuntu21.10noarchfirefox< 80.0.1+build1-0ubuntu1UNKNOWN
ubuntu22.04noarchfirefox< 80.0.1+build1-0ubuntu1UNKNOWN
ubuntu22.10noarchfirefox< 80.0.1+build1-0ubuntu1UNKNOWN
ubuntu23.04noarchfirefox< 80.0.1+build1-0ubuntu1UNKNOWN
ubuntu23.10noarchfirefox< 80.0.1+build1-0ubuntu1UNKNOWN
ubuntu24.04noarchfirefox< 80.0.1+build1-0ubuntu1UNKNOWN
Rows per page:
1-10 of 131

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CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

EPSS

0.002

Percentile

61.4%

JSON
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