Mozilla Firefox/Firefox ESR/Thunderbird SVG Element DOM-Based cross site scripting
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
4.9 | $0-$5k | 0.00 |
A vulnerability was found in Mozilla Firefox, Firefox ESR and Thunderbird (Web Browser) (affected version unknown). It has been rated as problematic. Affected by this issue is an unknown functionality. The manipulation as part of a SVG Element leads to a cross site scripting vulnerability (DOM-Based). Using CWE to declare the problem leads to CWE-80. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages. Impacted is integrity. CVE summarizes:
Firefox sometimes ran the onload handler for SVG elements that the DOM sanitizer decided to remove, resulting in JavaScript being executed after pasting attacker-controlled data into a contenteditable element. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.
The weakness was published 10/01/2020 as Bug 1646140 as not defined bug report (Bugzilla). The advisory is available at bugzilla.mozilla.org. This vulnerability is handled as CVE-2020-15676 since 07/10/2020. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/14/2020). This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.
Upgrading eliminates this vulnerability.
Similar entries are available at 162172, 162171 and 162167.
Product
Type
Vendor
Name
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.2VulDB Meta Temp Score: 5.1
VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 6.1
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Name: DOM-BasedClass: Cross site scripting / DOM-Based
CWE: CWE-80 / CWE-74 / CWE-707
ATT&CK: T1059.007
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Timeline
07/10/2020 🔍10/01/2020 🔍
10/02/2020 🔍
11/15/2020 🔍
Sources
Vendor: mozilla.orgProduct: mozilla.org
Advisory: Bug 1646140
Status: Not defined
CVE: CVE-2020-15676 (🔍)
See also: 🔍
Entry
Created: 10/02/2020 07:55Updated: 11/15/2020 13:50
Changes: 10/02/2020 07:55 (41), 10/02/2020 08:00 (4), 11/14/2020 09:35 (4), 11/15/2020 13:50 (14)
Complete: 🔍
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