Vulnerability Details : CVE-2019-14853
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.
Vulnerability category: Denial of service
Products affected by CVE-2019-14853
- cpe:2.3:a:python-ecdsa_project:python-ecdsa:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-14853
0.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 20 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-14853
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
3.7
|
LOW | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L |
2.2
|
1.4
|
Red Hat, Inc. | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2019-14853
-
[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.Assigned by: secalert@redhat.com (Secondary)
-
The product does not handle or incorrectly handles an exceptional condition.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-14853
-
https://seclists.org/bugtraq/2019/Dec/33
Bugtraq: [SECURITY] [DSA 4588-1] python-ecdsa security update
-
https://github.com/warner/python-ecdsa/releases/tag/python-ecdsa-0.13.3
Release ecdsa 0.13.3 · warner/python-ecdsa · GitHubRelease Notes
-
https://www.debian.org/security/2019/dsa-4588
Debian -- Security Information -- DSA-4588-1 python-ecdsa
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https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14853
1758704 – (CVE-2019-14853) CVE-2019-14853 python-ecdsa: Unexpected and undocumented exceptions during signature decodingIssue Tracking;Third Party Advisory
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