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CVE-2017-8820 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516	CVE	Vendor Advisory
https://bugs.torproject.org/24245	CVE	Vendor Advisory
https://www.debian.org/security/2017/dsa-4054	CVE	Third Party Advisory
https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516	[email protected]	Vendor Advisory
https://bugs.torproject.org/24245	[email protected]	Vendor Advisory
https://www.debian.org/security/2017/dsa-4054	[email protected]	Third Party Advisory

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-476	NULL Pointer Dereference	[email protected]

Affected Products

Product	Versions
tor project tor	< 0.2.5.16 >= 0.2.6, < 0.2.8.17 >= 0.2.9, < 0.2.9.14 >= 0.3.0, < 0.3.0.13 >= 0.3.1, < 0.3.1.9
CPE cpe:2.3:a:tor_project:tor:::::::: Remediation No remediation found in references.
debian debian linux	8.0 9.0
CPE cpe:2.3:o:debian:debian_linux:8.0:::::::* cpe:2.3:o:debian:debian_linux:9.0:::::::* Remediation No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
May 13, 2026	CVE Status Change	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Dec 21, 2017	Initial Analysis	[email protected]
Dec 5, 2017	CVE Modified	[email protected]