Vulnerability Monitor

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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.

Published

2017-10-29T20:29:00.207

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 7.5 (HIGH)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	quagga	quagga	≤ 1.2.1	Yes
Operating System	debian	debian_linux	8.0	Yes
Operating System	debian	debian_linux	9.0	Yes

References

http://download.savannah.gnu.org/releases/quagga/quagga-1.2.2.changelog.txt Issue Tracking, Third Party Advisory ([email protected])
http://www.debian.org/security/2017/dsa-4011 Issue Tracking, Third Party Advisory ([email protected])
https://bugs.debian.org/879474 Issue Tracking, Patch, Third Party Advisory ([email protected])
https://git.savannah.gnu.org/cgit/quagga.git/commit/?id=7a42b78be9a4108d98833069a88e6fddb9285008 Issue Tracking, Patch, Third Party Advisory ([email protected])
https://lists.quagga.net/pipermail/quagga-dev/2017-September/033284.html Issue Tracking, Patch, Third Party Advisory ([email protected])
http://download.savannah.gnu.org/releases/quagga/quagga-1.2.2.changelog.txt Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2017/dsa-4011 Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugs.debian.org/879474 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://git.savannah.gnu.org/cgit/quagga.git/commit/?id=7a42b78be9a4108d98833069a88e6fddb9285008 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.quagga.net/pipermail/quagga-dev/2017-September/033284.html Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)