CVE & CISA-KEV Catalog

CVE-2020-15658

MEDIUM
6.5
CVSS v3
NVD

Description

The code for downloading files did not properly take care of special characters, 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. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.

CWE-754

How to fix

Remediation Available
firefoxDebian
Fixed in:79.0-1CVE-2020-15658
firefoxUbuntu
Fixed in:79.0+build1-0ubuntu0.16.04.2USN-4443-1
Fixed in:79.0+build1-0ubuntu0.18.04.1USN-4443-1
Fixed in:79.0+build1-0ubuntu0.20.04.1USN-4443-1
DeveloperEditionWindows application
Affected:79.0Fixed in:79.0Mozilla
Mozilla Firefox (en-US)Windows application
Affected:79.0Fixed in:79.0Mozilla
Mozilla Firefox ESR (en-US)Windows application
Affected:78.1Fixed in:78.1Mozilla
Mozilla Thunderbird (en-US)Windows application
Affected:78.1Fixed in:78.1Mozilla

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityHigh
AvailabilityNone

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

Exploit Intelligence

1.20%probability of exploitation in 30 days
65thpercentile

Moderate risk: more likely to be exploited than 65% of all known CVEs.

References

Related Vulnerabilities

Other CWE-754 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2024-4367High8.873%-Fix
CVE-2022-39288High7.559%-Fix
CVE-2023-30591High7.554%--
CVE-2023-41993High8.829%KEVFix
CVE-2024-43044High8.829%-Fix
CVE-2024-3393High7.527%KEVFix
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.