It was discovered that the bgpd daemon in the Quagga routing suite does not properly calculate the length of multi-segment AS_PATH UPDATE messages, causing bgpd to drop a session and potentially resulting in loss of network connectivity.

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Debian Security Advisory DSA-4011-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
https://www.debian.org/security/                     Salvatore Bonaccorso
October 30, 2017                      https://www.debian.org/security/faq
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Package        : quagga
CVE ID         : CVE-2017-16227
Debian Bug     : 879474

It was discovered that the bgpd daemon in the Quagga routing suite does
not properly calculate the length of multi-segment AS_PATH UPDATE
messages, causing bgpd to drop a session and potentially resulting in
loss of network connectivity.

For the oldstable distribution (jessie), this problem has been fixed
in version 0.99.23.1-1+deb8u4.

For the stable distribution (stretch), this problem has been fixed in
version 1.1.1-3+deb9u1.

We recommend that you upgrade your quagga packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

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