Vulnerability Details : CVE-2017-8820

In Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9, remote attackers can cause a denial of service (NULL pointer dereference and application crash) against directory authorities via a malformed descriptor, aka TROVE-2017-010.
Vulnerability category: Memory CorruptionDenial of service
Published 2017-12-03 07:29:00
Updated 2017-12-21 18:07:25
Source Debian GNU/Linux
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2017-8820

Probability of exploitation activity in the next 30 days: 0.68%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 77 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2017-8820

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Source
5.0
 MEDIUM AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
 nvd@nist.gov
7.5
 HIGH CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
 nvd@nist.gov

CWE ids for CVE-2017-8820

  • A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2017-8820

Products affected by CVE-2017-8820

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