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Out-of-Bounds The advisory has been revoked - it doesn't affect any version of package quagga  (opens in a new tab)

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EPSS
20.83% (97th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-QUAGGA-319726
  • published24 Jan 2017
  • disclosed24 Jan 2017
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Introduced: 24 Jan 2017

CVE-2017-5495  (opens in a new tab)
CWE-119  (opens in a new tab)

Amendment

The Debian security team deemed this advisory irrelevant for Debian:unstable.

NVD Description

Note: Versions mentioned in the description apply only to the upstream quagga package and not the quagga package as distributed by Debian.

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.