Vulnerability CVE-2017-0376

Vulnerability Name:

CVE-2017-0376 (CCN-130530)

Assigned:

2016-11-29

Published:

2017-06-05

Updated:

2019-10-03

Summary:

The hidden-service feature in Tor before 0.3.0.8 allows a denial of service (assertion failure and daemon exit) in the connection_edge_process_relay_cell function via a BEGIN_DIR cell on a rendezvous circuit.

CVSS v3 Severity:

7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Low

CVSS v2 Severity:

5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

Vulnerability Type:

CWE-617

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2017-0376

Source: DEBIAN
Type: Third Party Advisory
DSA-3877

Source: XF
Type: UNKNOWN
tor-cve20170376-dos(130530)

Source: CCN
Type: Tor GIT Repository
TROVE-2017-005: Fix assertion failure in connection_edge_process_rela

Source: CONFIRM
Type: Issue Tracking, Patch, Third Party Advisory
https://github.com/torproject/tor/commit/56a7c5bc15e0447203a491c1ee37de9939ad1dcd

Source: CONFIRM
Type: Mailing List, Third Party Advisory
https://lists.torproject.org/pipermail/tor-announce/2017-June/000131.html

Source: CONFIRM
Type: Issue Tracking, Third Party Advisory
https://trac.torproject.org/projects/tor/ticket/22494

Source: CCN
Type: Tor Web site
Tor Project: Anonymity Online

Vulnerable Configuration:

Configuration 1:

cpe:/a:torproject:tor:*:*:*:*:*:*:*:* (Version < 0.3.0.8)

Configuration 2:

cpe:/o:debian:debian_linux:8.0:*:*:*:*:*:*:*

OR cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:20170376	V	CVE-2017-0376	2022-06-30
oval:org.opensuse.security:def:113539	P	tor-0.4.6.7-2.2 on GA media (Moderate)	2022-01-17
oval:org.opensuse.security:def:106934	P	tor-0.4.6.7-2.2 on GA media (Moderate)	2021-10-01
oval:com.ubuntu.bionic:def:201703760000000	V	CVE-2017-0376 on Ubuntu 18.04 LTS (bionic) - medium.	2017-06-09
oval:com.ubuntu.artful:def:20170376000	V	CVE-2017-0376 on Ubuntu 17.10 (artful) - medium.	2017-06-09
oval:com.ubuntu.xenial:def:20170376000	V	CVE-2017-0376 on Ubuntu 16.04 LTS (xenial) - medium.	2017-06-09
oval:com.ubuntu.xenial:def:201703760000000	V	CVE-2017-0376 on Ubuntu 16.04 LTS (xenial) - medium.	2017-06-09
oval:com.ubuntu.bionic:def:20170376000	V	CVE-2017-0376 on Ubuntu 18.04 LTS (bionic) - medium.	2017-06-09
oval:com.ubuntu.cosmic:def:20170376000	V	CVE-2017-0376 on Ubuntu 18.10 (cosmic) - medium.	2017-06-09
oval:com.ubuntu.cosmic:def:201703760000000	V	CVE-2017-0376 on Ubuntu 18.10 (cosmic) - medium.	2017-06-09
oval:com.ubuntu.trusty:def:20170376000	V	CVE-2017-0376 on Ubuntu 14.04 LTS (trusty) - medium.	2017-06-09

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