Vulnerability CVE-2017-8820: Information
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.
Severity: HIGH (7.5)
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: MEDIUM (5.0)
Vector: CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:P
Fixed packages
Package name | Branch | Fixed in version | Version from repository | Errata ID | Task # | State |
|---|---|---|---|---|---|---|
| tor | sisyphus | 0.3.1.9-alt1.S1 | 0.4.9.6-alt1 | ALT-PU-2017-2718-1 | 195681 | Fixed |
| tor | p11 | 0.3.1.9-alt1.S1 | 0.4.9.5-alt1 | ALT-PU-2017-2718-1 | 195681 | Fixed |
| tor | p10 | 0.3.1.9-alt1.S1 | 0.4.8.6-alt1 | ALT-PU-2017-2718-1 | 195681 | Fixed |
| tor | p9 | 0.3.1.9-alt1.S1 | 0.4.3.6-alt1 | ALT-PU-2017-2718-1 | 195681 | Fixed |
| tor | c10f2 | 0.3.1.9-alt1.S1 | 0.4.7.13-alt1 | ALT-PU-2017-2718-1 | 195681 | Fixed |
| tor | c9f2 | 0.3.1.9-alt1.S1 | 0.4.8.6-alt1 | ALT-PU-2017-2718-1 | 195681 | Fixed |
References to Advisories, Solutions, and Tools
Hyperlink | Resource |
|---|---|
| https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516 |
|
| https://bugs.torproject.org/24245 |
|
| https://www.debian.org/security/2017/dsa-4054 |
|