Mozilla Firefox/Firefox ESR/Thunderbird Promise Resolution out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.5$5k-$25k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Mozilla Firefox, Firefox ESR and Thunderbird. Impacted is an unknown function of the component Promise Resolution Handler. Executing a manipulation can lead to out-of-bounds. The identification of this vulnerability is CVE-2020-6806. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in Mozilla Firefox, Firefox ESR and Thunderbird (Web Browser) (the affected version unknown). This vulnerability affects an unknown part of the component Promise Resolution Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

By carefully crafting promise resolutions, it was possible to cause an out-of-bounds read off the end of an array resized during script execution. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.6, Firefox < 74, Firefox < ESR68.6, and Firefox ESR < 68.6.

The weakness was shared 03/25/2020. This vulnerability was named CVE-2020-6806 since 01/10/2020. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 03/26/2020).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-152345 and VDB-152343 are related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.6

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/10/2020 🔍
03/25/2020 +75 days 🔍
03/26/2020 +1 days 🔍
05/11/2025 +1871 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: 157524
Status: Not defined

CVE: CVE-2020-6806 (🔍)
GCVE (CVE): GCVE-0-2020-6806
GCVE (VulDB): GCVE-100-152344
See also: 🔍

Entryinfo

Created: 03/26/2020 07:59
Updated: 05/11/2025 01:11
Changes: 03/26/2020 07:59 (36), 03/26/2020 08:04 (18), 05/11/2024 17:29 (18), 05/11/2024 17:36 (2), 05/11/2025 01:11 (4)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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