Improper Input Validation Affecting quagga package, versions <1.1.1-3+deb9u1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-DEBIAN9-QUAGGA-319707
- published29 Oct 2017
- disclosed29 Oct 2017
Introduced: 29 Oct 2017
CVE-2017-16227 (opens in a new tab)How to fix?
Upgrade Debian:9 quagga to version 1.1.1-3+deb9u1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream quagga package and not the quagga package as distributed by Debian.
See How to fix? for Debian:9 relevant fixed versions and status.
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.
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16227
- https://bugs.debian.org/879474
- http://www.debian.org/security/2017/dsa-4011
- https://security-tracker.debian.org/tracker/CVE-2017-16227
- http://download.savannah.gnu.org/releases/quagga/quagga-1.2.2.changelog.txt
- https://git.savannah.gnu.org/cgit/quagga.git/commit/?id=7a42b78be9a4108d98833069a88e6fddb9285008
- https://lists.quagga.net/pipermail/quagga-dev/2017-September/033284.html
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-16227