Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Quagga | Quagga | <= 1.2.1 |
| Debian | Debian Linux | 8.0 |
Related Weaknesses (CWE)
References
- http://download.savannah.gnu.org/releases/quagga/quagga-1.2.2.changelog.txtIssue TrackingThird Party Advisory
- http://www.debian.org/security/2017/dsa-4011Issue TrackingThird Party Advisory
- https://bugs.debian.org/879474Issue TrackingPatchThird Party Advisory
- https://git.savannah.gnu.org/cgit/quagga.git/commit/?id=7a42b78be9a4108d98833069Issue TrackingPatchThird Party Advisory
- https://lists.quagga.net/pipermail/quagga-dev/2017-September/033284.htmlIssue TrackingPatchThird Party Advisory
- http://download.savannah.gnu.org/releases/quagga/quagga-1.2.2.changelog.txtIssue TrackingThird Party Advisory
- http://www.debian.org/security/2017/dsa-4011Issue TrackingThird Party Advisory
- https://bugs.debian.org/879474Issue TrackingPatchThird Party Advisory
- https://git.savannah.gnu.org/cgit/quagga.git/commit/?id=7a42b78be9a4108d98833069Issue TrackingPatchThird Party Advisory
- https://lists.quagga.net/pipermail/quagga-dev/2017-September/033284.htmlIssue TrackingPatchThird Party Advisory
FAQ
What is CVE-2017-16227?
CVE-2017-16227 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 lo...
How severe is CVE-2017-16227?
CVE-2017-16227 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-16227?
Check the references section above for vendor advisories and patch information. Affected products include: Quagga Quagga, Debian Debian Linux.