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CVE-2022-24884

CRITICAL
10.0
CVSS 3.1
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.

Metadata

CVE ID
CVE-2022-24884
State
PUBLISHED
Assigner
GitHub_M
Reserved
2022-02-10 00:00 UTC
Published
2022-05-05 23:50 UTC
Last updated
2025-04-23 18:29 UTC
Primary CWE
CWE-347
CWE-347: Improper Verification of Cryptographic Signature
Vendor / Product
freifunk-gluon / ecdsautils
Sources
cve.org  ·  NVD

Severity & Metrics

10.0 CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
SSVC — CISA Coordinator
Exploitation
none
Automatable
yes
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
freifunk-gluon ecdsautils — < 0.4.1
Weakness (CWE)
CWESourceDescription
CWE-347 cna CWE-347: Improper Verification of Cryptographic Signature
CVSS scores (1)
ScoreSeverityVersionSourceVector
10.0 CRITICAL 3.1 cna CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
References (8)
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