CVE-2019-14853

Aliases:GHSA-2mrj-435v-c2crGHSA-pwfw-mgfj-7g3gPYSEC-2019-177
Advisory lineage Upstream: 0 Downstream: 14
Modified
Published: 26 Nov 2019, 12:06
Last modified:05 Aug 2024, 00:26

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
v3.1 (nvd)
EPSS Score
0.08% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

26 Nov 2019, 12:06
Published
Vulnerability first disclosed
05 Aug 2024, 00:26
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v4.0•HIGH•Score: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • v3.0•LOW•Score: 3.7CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 0.08%• Percentile: 23%

Techniques & Countermeasures

  • CWE-755•Improper Handling of Exceptional Conditions

    The product does not handle or incorrectly handles an exceptional condition.

  • CWE-391•Unchecked Error Condition

    [PLANNED FOR DEPRECATION. SEE MAINTENANCE NOTES AND CONSIDER CWE-252, CWE-248, OR CWE-1069.] Ignoring exceptions and other error conditions may allow an attacker to induce unexpected behavior unnoticed.

Affected Systems

  • PyPI•ecdsa

    < 0.13.3

  • python-ecdsa_project•python-ecdsa

    < 0.13.3

  • [unknown]•python-ecdsa

    0.13.3

References (10)