openSUSE Security Update : tor (openSUSE-2015-300)

Medium Nessus Plugin ID 82754

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VPR Score: 3.6

Synopsis

The remote openSUSE host is missing a security update.

Description

Tor was updated to 0.2.4.27 to fix two security issues that could be used by an attacker to crash hidden services, or crash clients visiting hidden services. Hidden services should upgrade as soon as possible.

The following security issues were fixed :

- A malicious client could trigger an assertion failure and halt a hidden service. (CVE-2015-2928)

- A client could crash with an assertion failure when parsing a malformed hidden service descriptor.
(CVE-2015-2929)

This release also backports a simple improvement to make hidden services a bit less vulnerable to denial-of-service attacks :

- Introduction points no longer allow multiple INTRODUCE1 cells to arrive on the same circuit. This should make it more expensive for attackers to overwhelm hidden services with introductions.

Solution

Update the affected tor packages.

See Also

https://bugzilla.opensuse.org/show_bug.cgi?id=926097

Plugin Details

Severity: Medium

ID: 82754

File Name: openSUSE-2015-300.nasl

Version: 1.3

Type: local

Agent: unix

Published: 2015/04/14

Updated: 2020/06/04

Dependencies: 12634

Risk Information

Risk Factor: Medium

VPR Score: 3.6

CVSS v2.0

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vulnerability Information

CPE: p-cpe:/a:novell:opensuse:tor, p-cpe:/a:novell:opensuse:tor-debuginfo, p-cpe:/a:novell:opensuse:tor-debugsource, cpe:/o:novell:opensuse:13.1, cpe:/o:novell:opensuse:13.2

Required KB Items: Host/local_checks_enabled, Host/SuSE/release, Host/SuSE/rpm-list, Host/cpu

Patch Publication Date: 2015/04/06

Vulnerability Publication Date: 2020/01/24

Reference Information

CVE: CVE-2015-2928, CVE-2015-2929