Description
The aspath_put function in bgpd/bgp_aspath.c in Quagga before 1.2.2 allows remote attackers to cause a denial of service (session drop) via BGP UPDATE messages, because AS_PATH size calculation for long paths counts certain bytes twice and consequently constructs an invalid message.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://bugs.debian.org/879474 ↗
- http://download.savannah.gnu.org/releases/quagga/quagga-1.2.2.changelog.txt ↗
- http://www.debian.org/security/2017/dsa-4011 ↗
- https://git.savannah.gnu.org/cgit/quagga.git/commit/?id=7a42b78be9a4108d98833069a88e6fddb9285008 ↗
- https://lists.quagga.net/pipermail/quagga-dev/2017-September/033284.html ↗