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debiancveDebian Security Bug TrackerDEBIANCVE:CVE-2020-26951
HistoryDec 09, 2020 - 1:15 a.m.

CVE-2020-26951

2020-12-0901:15:12
Debian Security Bug Tracker
security-tracker.debian.org
42
firefox
parsing
event loading
sanitization
vulnerability
thunderbird
xss
privileged internal pages

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

6.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

EPSS

0.001

Percentile

36.2%

JSON

A parsing and event loading mismatch in Firefox’s SVG code could have allowed load events to fire, even after sanitization. An attacker already capable of exploiting an XSS vulnerability in privileged internal pages could have used this attack to bypass our built-in sanitizer. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.

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[SECURITY] [DLA 2457-1] firefox-esr security update
2020-11-19 10:07:14
[SECURITY] [DLA 2464-1] thunderbird security update
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2020-12-01 15:12:08
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2020-12-01 00:00:00
firefox security update
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Mozilla Thunderbird: Multiple vulnerabilities
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firefox security update
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Security Vulnerabilities fixed in Firefox ESR 78.5 — Mozilla
2020-11-17 00:00:00
Security Vulnerabilities fixed in Thunderbird 78.5 — Mozilla
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Security fix for the ALT Linux 10 package thunderbird version 78.5.0-alt1
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2020-11-17 00:00:00
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Security Bulletin: Multiple vulnerabilities of Mozilla Firefox (less than Firefox 78.5 ESR + CVE-2020-26951) have affected Synthetic Playback Agent 8.1.4.0-8.1.4 IF11 + ICAM2019.3.0 - 2020.2.0
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Important: thunderbird
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2021-07-02 16:43:38

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

6.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

EPSS

0.001

Percentile

36.2%

JSON
Related for DEBIANCVE:CVE-2020-26951
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