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CVE-2018-0490

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Date: March 5, 2018

An issue was discovered in Tor before 0.2.9.15, 0.3.1.x before 0.3.1.10, and 0.3.2.x before 0.3.2.10. The directory-authority protocol-list subprotocol implementation allows remote attackers to cause a denial of service (NULL pointer dereference and directory-authority crash) via a misformatted relay descriptor that is mishandled during voting.

Language: C

Severity Score

Related Resources (7)

https://www.debian.org/security/2018/dsa-4183
https://nvd.nist.gov/vuln/detail/CVE-2018-0490
https://security-tracker.debian.org/tracker/CVE-2018-0490
https://trac.torproject.org/projects/tor/ticket/25074
https://blog.torproject.org/new-stable-tor-releases-security-fixes-and-dos-prevention-03210-03110-02915
https://people.canonical.com/~ubuntu-security/cve/CVE-2018-0490
https://www.mend.io/vulnerability-database/CVE-2018-0490

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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