Debian DSA-3216-1 : tor - security update

Medium Nessus Plugin ID 82624

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VPR Score: 3.6


The remote Debian host is missing a security-related update.


Several vulnerabilities have been discovered in Tor, a connection-based low-latency anonymous communication system :

- CVE-2015-2928 'disgleirio' discovered that a malicious client could trigger an assertion failure in a Tor instance providing a hidden service, thus rendering the service inaccessible.

- CVE-2015-2929 'DonnchaC' discovered that Tor clients would crash with an assertion failure upon parsing specially crafted hidden service descriptors.

Introduction points would accept multiple INTRODUCE1 cells on one circuit, making it inexpensive for an attacker to overload a hidden service with introductions. Introduction points now no longer allow multiple cells of that type on the same circuit.


Upgrade the tor packages.

For the stable distribution (wheezy), these problems have been fixed in version

See Also

Plugin Details

Severity: Medium

ID: 82624

File Name: debian_DSA-3216.nasl

Version: 1.5

Type: local

Agent: unix

Published: 2015/04/08

Updated: 2021/01/11

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:debian:debian_linux:tor, cpe:/o:debian:debian_linux:7.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Patch Publication Date: 2015/04/06

Vulnerability Publication Date: 2020/01/24

Reference Information

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

DSA: 3216