Is CVE-2022-24884 in the CISA KEV catalog?

No. CVE-2022-24884 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-24884?

CVE-2022-24884 has a CVSS v3 base score of 10.0 (CRITICAL).

What is the EPSS score for CVE-2022-24884?

CVE-2022-24884 has an EPSS score of 1.04% (60th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-24884?

Upgrade ecdsautils on debian 11 to 0.3.2+git20151018-2+deb11u1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2022-24884

CRITICAL

10.0

CVSS v3

NVD

Description

ecdsautils is a tiny collection of programs used for ECDSA (keygen, sign, verify). `ecdsa_verify_[prepare_]legacy()` does not check whether the signature values `r` and `s` are non-zero. A signature consisting only of zeroes is always considered valid, making it trivial to forge signatures. Requiring multiple signatures from different public keys does not mitigate the issue: `ecdsa_verify_list_legacy()` will accept an arbitrary number of such forged signatures. Both the `ecdsautil verify` CLI command and the libecdsautil library are affected. The issue has been fixed in ecdsautils 0.4.1. All older versions of ecdsautils (including versions before the split into a library and a CLI utility) are vulnerable.

CWE-347

How to fix

Remediation Available

ecdsautilsDebian

Fixed in:0.3.2+git20151018-2+deb11u1CVE-2022-24884

Fixed in:0.4.1-1CVE-2022-24884

ecdsautilsUbuntu

Fixed in:0.3.2+git20151018-2ubuntu0.16.04.1~esm1USN-6239-1

Fixed in:0.3.2+git20151018-2ubuntu0.18.04.1~esm1USN-6239-1

Fixed in:0.3.2+git20151018-2+deb10u1build0.20.04.1USN-6239-1

Fixed in:0.3.2+git20151018-2+deb10u1build0.22.04.1USN-6239-1

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

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

1.04%probability of exploitation in 30 days

60thpercentile

Moderate risk: more likely to be exploited than 60% of all known CVEs.

References

Patch2

Third-Party Advisory3

Other references3

Related Vulnerabilities

Other CWE-347 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2018-16042	Medium	6.5	82%	-	-
CVE-2025-59718	Critical	9.8	66%	KEV	Fix
CVE-2025-25292	Critical	9.8	64%	-	Fix
CVE-2021-22160	Critical	9.8	53%	-	Fix
CVE-2013-3900	Medium	5.5	45%	KEV	-
CVE-2018-0114	High	7.5	43%	-	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.