Mozilla Firefox ESR up to 68.10 on Android File Picker unrestricted upload

Summaryinfo

A vulnerability classified as critical has been found in Mozilla Firefox ESR up to 68.10 on Android. This vulnerability affects unknown code of the component File Picker Handler. Performing a manipulation results in unrestricted upload. This vulnerability is cataloged as CVE-2020-15649. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Firefox ESR up to 68.10 on Android (Web Browser). It has been classified as critical. This affects some unknown processing of the component File Picker Handler. The manipulation with an unknown input leads to a unrestricted upload vulnerability. CWE is classifying the issue as CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Given an installed malicious file picker application, an attacker was able to steal and upload local files of their choosing, regardless of the actually files picked. *Note: This issue only affected Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox ESR < 68.11.

The weakness was shared 08/10/2020 as Bug 1475835 as not defined bug report (Bugzilla). It is possible to read the advisory at bugzilla.mozilla.org. This vulnerability is uniquely identified as CVE-2020-15649 since 07/10/2020. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/11/2020). The attack technique deployed by this issue is T1608.002 according to MITRE ATT&CK.

Upgrading to version 68.11 eliminates this vulnerability.

The entry VDB-159460 is related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Web Browser

Vendor

• Mozilla

Name

• Firefox ESR

Version

• 68.0
• 68.1
• 68.2
• 68.3
• 68.4
• 68.5
• 68.6
• 68.7
• 68.8
• 68.9
• 68.10

License

• open-source

Website

• Vendor: https://www.mozilla.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion