Executive Summary

Informations
Name CVE-2011-0491 First vendor Publication 2011-01-19
Vendor Cve Last vendor Modification 2017-08-17

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
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Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

The tor_realloc function in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha does not validate a certain size value during memory allocation, which might allow remote attackers to cause a denial of service (daemon crash) via unspecified vectors, related to "underflow errors."

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0491

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-20 Improper Input Validation

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 251

OpenVAS Exploits

Date Description
2012-02-12 Name : Gentoo Security Advisory GLSA 201110-13 (Tor)
File : nvt/glsa_201110_13.nasl
2011-06-10 Name : Fedora Update for tor FEDORA-2011-0650
File : nvt/gb_fedora_2011_0650_tor_fc13.nasl
2011-05-17 Name : Fedora Update for tor FEDORA-2011-0642
File : nvt/gb_fedora_2011_0642_tor_fc14.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
70527 Tor tor_realloc Function Memory Allocation Size Value Underflow Remote DoS

Tor's 'tor_realloc' function fails to properly check for SIZE_T_MAX, resulting in an underflow error. This may allow a remote attacker to cause a denial of service.

Nessus® Vulnerability Scanner

Date Description
2011-10-19 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201110-13.nasl - Type : ACT_GATHER_INFO
2011-06-09 Name : The remote Fedora host is missing a security update.
File : fedora_2011-0650.nasl - Type : ACT_GATHER_INFO
2011-05-16 Name : The remote Fedora host is missing a security update.
File : fedora_2011-0642.nasl - Type : ACT_GATHER_INFO

Sources (Detail)

Source Url
BID http://www.securityfocus.com/bid/45953
CONFIRM http://blog.torproject.org/blog/tor-02129-released-security-patches
https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLog
https://trac.torproject.org/projects/tor/ticket/2324
MLIST http://archives.seul.org/or/announce/Jan-2011/msg00000.html
XF https://exchange.xforce.ibmcloud.com/vulnerabilities/64888

Alert History

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Date Informations
2021-05-05 01:08:05
  • Multiple Updates
2021-05-04 12:13:55
  • Multiple Updates
2021-04-22 01:15:05
  • Multiple Updates
2020-05-23 01:43:48
  • Multiple Updates
2020-05-23 00:27:42
  • Multiple Updates
2017-08-17 09:23:16
  • Multiple Updates
2016-04-26 20:30:54
  • Multiple Updates
2014-02-17 11:00:06
  • Multiple Updates
2013-05-10 22:53:52
  • Multiple Updates