Is CVE-2021-44847 in the CISA KEV catalog?

No. CVE-2021-44847 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-44847?

CVE-2021-44847 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2021-44847?

CVE-2021-44847 has an EPSS score of 3.95% (89th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-44847?

Upgrade libtoxcore on debian 12 to 0.2.13-1 or later.

CVE & CISA-KEV Catalog

CVE-2021-44847

CRITICALEPSS 89th pctl

9.8

CVSS v3

NVD

Description

A stack-based buffer overflow in handle_request function in DHT.c in toxcore 0.1.9 through 0.1.11 and 0.2.0 through 0.2.12 (caused by an improper length calculation during the handling of received network packets) allows remote attackers to crash the process or potentially execute arbitrary code via a network packet.

CWE-682

How to fix

Remediation Available

libtoxcoreDebian

Fixed in:0.2.13-1CVE-2021-44847

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

3.95%probability of exploitation in 30 days

89thpercentile

Elevated risk: more likely to be exploited than 89% of all known CVEs.

References

Patch1

github.com

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 2024-11-21.