Executive Summary

Informations
Name CVE-2017-5495 First vendor Publication 2017-01-24
Vendor Cve Last vendor Modification 2018-01-05

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:C)
Cvss Base Score 7.8 Attack Range Network
Cvss Impact Score 6.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

All versions of Quagga, 0.93 through 1.1.0, are vulnerable to an unbounded memory allocation in the telnet 'vty' CLI, leading to a Denial-of-Service of Quagga daemons, or even the entire host. When Quagga daemons are configured with their telnet CLI enabled, anyone who can connect to the TCP ports can trigger this vulnerability, prior to authentication. Most distributions restrict the Quagga telnet interface to local access only by default. The Quagga telnet interface 'vty' input buffer grows automatically, without bound, so long as a newline is not entered. This allows an attacker to cause the Quagga daemon to allocate unbounded memory by sending very long strings without a newline. Eventually the daemon is terminated by the system, or the system itself runs out of memory. This is fixed in Quagga 1.1.1 and Free Range Routing (FRR) Protocol Suite 2017-01-10.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5495

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 44

Snort® IPS/IDS

Date Description
2019-09-05 Quagga telnet CLI buffer overflow attempt
RuleID : 50871 - Revision : 1 - Type : SERVER-OTHER

Nessus® Vulnerability Scanner

Date Description
2018-03-20 Name : The remote EulerOS host is missing multiple security updates.
File : EulerOS_SA-2018-1065.nasl - Type : ACT_GATHER_INFO
2017-11-01 Name : The remote Ubuntu host is missing one or more security-related patches.
File : ubuntu_USN-3471-1.nasl - Type : ACT_GATHER_INFO
2017-08-30 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-2294-1.nasl - Type : ACT_GATHER_INFO
2017-05-09 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2017-547.nasl - Type : ACT_GATHER_INFO
2017-05-09 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2017-551.nasl - Type : ACT_GATHER_INFO
2017-05-01 Name : The remote EulerOS host is missing a security update.
File : EulerOS_SA-2017-1058.nasl - Type : ACT_GATHER_INFO
2017-04-06 Name : The remote Scientific Linux host is missing one or more security updates.
File : sl_20170321_quagga_on_SL6_x.nasl - Type : ACT_GATHER_INFO
2017-03-30 Name : The remote Oracle Linux host is missing one or more security updates.
File : oraclelinux_ELSA-2017-0794.nasl - Type : ACT_GATHER_INFO
2017-03-27 Name : The remote CentOS host is missing one or more security updates.
File : centos_RHSA-2017-0794.nasl - Type : ACT_GATHER_INFO
2017-03-22 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2017-0794.nasl - Type : ACT_GATHER_INFO
2017-02-28 Name : The remote Fedora host is missing a security update.
File : fedora_2017-ba9c6a3634.nasl - Type : ACT_GATHER_INFO
2017-02-15 Name : The remote Fedora host is missing a security update.
File : fedora_2017-b89a945e9d.nasl - Type : ACT_GATHER_INFO

Sources (Detail)

Source Url
BID http://www.securityfocus.com/bid/95745
CONFIRM http://savannah.nongnu.org/forum/forum.php?forum_id=8783
https://github.com/freerangerouting/frr/pull/63
https://lists.quagga.net/pipermail/quagga-dev/2017-January/016586.html
REDHAT http://rhn.redhat.com/errata/RHSA-2017-0794.html
SECTRACK http://www.securitytracker.com/id/1037688

Alert History

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Date Informations
2021-05-04 13:03:30
  • Multiple Updates
2021-04-22 02:17:09
  • Multiple Updates
2020-05-23 02:07:57
  • Multiple Updates
2020-05-23 01:02:54
  • Multiple Updates
2018-01-05 09:24:22
  • Multiple Updates
2017-11-02 13:25:26
  • Multiple Updates
2017-08-31 13:25:21
  • Multiple Updates
2017-07-26 09:23:13
  • Multiple Updates
2017-05-10 13:24:44
  • Multiple Updates
2017-05-02 13:24:37
  • Multiple Updates
2017-04-07 13:23:00
  • Multiple Updates
2017-03-31 13:22:46
  • Multiple Updates
2017-03-28 13:25:26
  • Multiple Updates
2017-03-23 13:24:15
  • Multiple Updates
2017-03-03 12:01:14
  • Multiple Updates
2017-03-01 13:25:37
  • Multiple Updates
2017-02-16 13:26:12
  • Multiple Updates
2017-01-26 21:23:50
  • Multiple Updates
2017-01-26 12:06:18
  • Multiple Updates
2017-01-24 12:02:56
  • First insertion