CVE-2017-16227

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 v3.0 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3.0 : HIGH

Vector : AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://lists.quagga.net/pipermail/quagga-dev/2017-September/033284.html	Issue Tracking Patch Third Party Advisory
https://git.savannah.gnu.org/cgit/quagga.git/commit/?id=7a42b78be9a4108d98833069a88e6fddb9285008	Issue Tracking Patch Third Party Advisory
https://bugs.debian.org/879474	Issue Tracking Patch Third Party Advisory
http://download.savannah.gnu.org/releases/quagga/quagga-1.2.2.changelog.txt	Issue Tracking Third Party Advisory
http://www.debian.org/security/2017/dsa-4011	Issue Tracking Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:quagga:quagga:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:debian:debian_linux:9.0:::::::*
	cpe:2.3:o:debian:debian_linux:8.0:::::::*

Information

Published : 2017-10-29 13:29

Updated : 2017-11-18 08:16

NVD link : CVE-2017-16227

Mitre link : CVE-2017-16227

JSON object : View

CWE

CWE-20

Improper Input Validation

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Products Affected

debian

debian_linux

quagga

quagga

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