FKIE_CVE-2017-5495

Vulnerability from fkie_nvd - Published: 2017-01-24 07:59 - Updated: 2025-04-20 01:37
Severity ?
7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
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.
References
cve@mitre.orghttp://rhn.redhat.com/errata/RHSA-2017-0794.html
cve@mitre.orghttp://savannah.nongnu.org/forum/forum.php?forum_id=8783Release Notes, Vendor Advisory
cve@mitre.orghttp://www.securityfocus.com/bid/95745
cve@mitre.orghttp://www.securitytracker.com/id/1037688
cve@mitre.orghttps://github.com/freerangerouting/frr/pull/63Patch, Vendor Advisory
cve@mitre.orghttps://lists.quagga.net/pipermail/quagga-dev/2017-January/016586.html
af854a3a-2127-422b-91ae-364da2661108http://rhn.redhat.com/errata/RHSA-2017-0794.html
af854a3a-2127-422b-91ae-364da2661108http://savannah.nongnu.org/forum/forum.php?forum_id=8783Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/95745
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1037688
af854a3a-2127-422b-91ae-364da2661108https://github.com/freerangerouting/frr/pull/63Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.quagga.net/pipermail/quagga-dev/2017-January/016586.html
Impacted products
Vendor Product Version
quagga quagga *
To clipboard 

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