All errata/sisyphus/ALT-PU-2020-3226-3
ALT-PU-2020-3226-3

Package update python3-module-ecdsa in branch sisyphus

Version0.16.0-alt1
Task#261150
Published2026-02-05
Max severityCRITICAL
Severity:

Closed issues (6)

BDU:2020-01480
HIGH7.5

Уязвимость криптографической библиотеки Python ECDSA, связанная с недостаточной обработкой исключительных состояний, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2020-04-14Modified: 2023-11-21
CVSS 3.xHIGH 7.5
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0HIGH 7.8
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:C
References
BDU:2020-01481
CRITICAL9.1

Уязвимость криптографической библиотеки Python ECDSA, связанная с некорректной проверкой криптографической подписи, позволяющая нарушителю оказать воздействие на конфиденциальность и целостность защищаемой информации

Published: 2020-04-14Modified: 2023-11-21
CVSS 3.xCRITICAL 9.1
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS 2.0CRITICAL 9.4
CVSS:2.0/AV:N/AC:L/Au:N/C:C/I:C/A:N
References
CVE-2019-14853
HIGH7.5

An error-handling flaw was found in python-ecdsa before version 0.13.3. During signature decoding, malformed DER signatures could raise unexpected exceptions (or no exceptions at all), which could lead to a denial of service.

Published: 2019-11-26Modified: 2024-11-21
CVSS 2.0MEDIUM 5.0
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS 3.xHIGH 7.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
CVE-2019-14859
CRITICAL9.1

A flaw was found in all python-ecdsa versions before 0.13.3, where it did not correctly verify whether signatures used DER encoding. Without this verification, a malformed signature could be accepted, making the signature malleable. Without proper verification, an attacker could use a malleable signature to create false transactions.

Published: 2020-01-02Modified: 2024-11-21
CVSS 2.0MEDIUM 6.4
CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:P/A:N
CVSS 3.xCRITICAL 9.1
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
References
GHSA-8qxj-f9rh-9fg2
CRITICAL9.3

Improper Verification of Cryptographic Signature in Pure-Python ECDSA

Published: 2020-04-01Modified: 2024-09-20
CVSS 3.xCRITICAL 9.3
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS 4.0CRITICAL 9.3
CVSS:4.0/CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
References
GHSA-pwfw-mgfj-7g3g
HIGH8.7

ecdsa Denial of Service vulnerability in signature verification and signature malleability

Published: 2019-10-08Modified: 2024-09-20
CVSS 3.xHIGH 8.7
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 4.0HIGH 8.7
CVSS:4.0/CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
References