Is CVE-2023-45139 in the CISA KEV catalog?

No. CVE-2023-45139 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-45139?

CVE-2023-45139 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2023-45139?

CVE-2023-45139 has an EPSS score of 1.23% (65th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-45139?

Upgrade fonttools on debian 12 to 4.38.0-1+deb12u1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2023-45139

HIGH

7.5

CVSS v3

NVD

Description

fontTools is a library for manipulating fonts, written in Python. The subsetting module has a XML External Entity Injection (XXE) vulnerability which allows an attacker to resolve arbitrary entities when a candidate font (OT-SVG fonts), which contains a SVG table, is parsed. This allows attackers to include arbitrary files from the filesystem fontTools is running on or make web requests from the host system. This vulnerability has been patched in version 4.43.0.

CWE-611XML External Entity (XXE)

How to fix

Remediation Available

fonttoolsDebian

Fixed in:4.38.0-1+deb12u1CVE-2023-45139

Fixed in:4.46.0-1CVE-2023-45139

fonttoolsUbuntu

Fixed in:4.29.1-2ubuntu0.1~esm1USN-7917-1

Fixed in:4.46.0-1ubuntu0.1~esm1USN-7917-1

Fixed in:4.55.3-2ubuntu0.25.10.1USN-7917-1

python3-fonttoolsUbuntu

Fixed in:4.29.1-2ubuntu0.1~esm1USN-7917-1

Fixed in:4.46.0-1ubuntu0.1~esm1USN-7917-1

Fixed in:4.55.3-2ubuntu0.25.10.1USN-7917-1

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

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

1.23%probability of exploitation in 30 days

65thpercentile

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

References

Patch1

github.com

Exploit1

github.com

Release Notes1

github.com

Other references3

Related Vulnerabilities

Other CWE-611 (XML External Entity (XXE)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-34102	Critical	9.8	100%	KEV	Fix
CVE-2019-9670	Critical	9.8	100%	KEV	Fix
CVE-2022-28219	Critical	9.8	97%	-	-
CVE-2024-22024	High	8.3	95%	-	-
CVE-2024-38653	High	7.5	92%	-	-
CVE-2017-12629	Critical	9.8	92%	-	Fix

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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.