Input validation error in firefox-esr (Alpine package)



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-15658
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 firefox-esr (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Input validation error

EUVDB-ID: #VU32903

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-15658

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to insufficient validation of special characters during file download, which led to an attacker being able to cut off the file ending at an earlier position, leading to a different file type being downloaded than shown in the dialog. A remote attacker can override file type when saving data to disk.

Mitigation

Install update from vendor's website.

Vulnerable software versions

firefox-esr (Alpine package): 78.0.2-r1

CPE2.3 External links

http://git.alpinelinux.org/aports/commit/?id=ecfc67fc0aa1c8be66b005da45f868c730633a4e
http://git.alpinelinux.org/aports/commit/?id=78431c6461742f7904f5cd815bbed5f76852a8aa
http://git.alpinelinux.org/aports/commit/?id=d28edc9bebe787d7cff81e5dc7200f5b78fd3797


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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