Is CVE-2023-29542 in the CISA KEV catalog?

No. CVE-2023-29542 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-29542?

CVE-2023-29542 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2023-29542?

CVE-2023-29542 has an EPSS score of 0.94% (57th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-29542?

Upgrade DeveloperEdition to 112.0 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2023-29542

CRITICAL

9.8

CVSS v3

NVD

Description

A newline in a filename could have been used to bypass the file extension security mechanisms that replace malicious file extensions such as .lnk with .download. This could have led to accidental execution of malicious code. *This bug only affects Firefox and Thunderbird on Windows. Other versions of Firefox and Thunderbird are unaffected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10.

How to fix

Remediation Available

DeveloperEditionWindows application

Affected:112.0Fixed in:112.0Mozilla

Mozilla Firefox (en-US)Windows application

Affected:112.0Fixed in:112.0Mozilla

Mozilla Firefox ESR (en-US)Windows application

Affected:102.10Fixed in:102.10Mozilla

Mozilla Thunderbird (en-US)Windows application

Affected:102.10Fixed in:102.10Mozilla

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 InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.94%probability of exploitation in 30 days

57thpercentile

Moderate risk: more likely to be exploited than 57% of all known CVEs.

References

Vendor Advisory3

Other references2

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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 2024-12-11.