Vulnerability Note VU#940439
Quagga bgpd is affected by multiple vulnerabilities
Original Release date: 15 Feb 2018 | Last revised: 19 Feb 2018

Overview
The Quagga BGP daemon bgpd prior to version 1.2.3 may be vulnerable to multiple issues that may result in denial of service, information disclosure, or remote code execution.

Description
CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer – CVE-2018-5378 (Quagga-2018-0543)
The Quagga BGP daemon, bgpd, does not properly bounds check the data sent with a NOTIFY to a peer, if an attribute length is invalid.

Arbitrary data from the bgpd process may be sent over the network to a peer and/or it may crash.

CWE-415: Double Free – CVE-2018-5379 (Quagga-2018-1114)

The Quagga BGP daemon, bgpd, can double-free memory when processing certain forms of UPDATE message, containing cluster-list and/or unknown attributes.

CWE-125: Out-of-bounds Read – CVE-2018-5380 (Quagga-2018-1550)

The Quagga BGP daemon, bgpd, can overrun internal BGP code-to-string conversion tables used for debug by 1 pointer value, based on input.

CWE-228: Improper Handling of Syntactically Invalid Structure – CVE-2018-5381 (Quagga-2018-1975)

The Quagga BGP daemon, bgpd, had a bug in its parsing of "Capabilitiesquot; in BGP OPEN messages, in the bgp_packet.c:bgp_capability_msg_parse function.

The parser can enter an infinite loop on invalid capabilities if a Multi-Protocol capability does not have a recognized AFI/SAFI.

For more information, please see Quagga’s version 1.2.3 release announcement.

The CVSS score below is based on CVE-2018-5379.

Impact
An unauthenticated, remote attacker may be able to use crafted input to result in a crash of bgpd or even allow a remote attacker to gain control of an affected bgpd process.

Solution
Apply an update

Quagga has released bgpd version 1.2.3 to address these issues.

Affected users should apply an update as soon as possible.

Vendor Information (Learn More)

VendorStatusDate NotifiedDate UpdatedDebian GNU/LinuxAffected06 Feb 201815 Feb 2018
SUSE LinuxAffected06 Feb 201819 Feb 2018
UbuntuAffected06 Feb 201819 Feb 2018
CoreOSNot Affected06 Feb 201807 Feb 2018
Alpine LinuxUnknown15 Feb 201815 Feb 2018
Arch LinuxUnknown06 Feb 201806 Feb 2018
Arista Networks, Inc.Unknown06 Feb 201806 Feb 2018
ASP LinuxUnknown06 Feb 201806 Feb 2018
CentOSUnknown15 Feb 201815 Feb 2018
ENEAUnknown15 Feb 201815 Feb 2018
Fedora ProjectUnknown06 Feb 201806 Feb 2018
GeexboxUnknown06 Feb 201806 Feb 2018
Gentoo LinuxUnknown06 Feb 201806 Feb 2018
HomeSeerUnknown15 Feb 201815 Feb 2018
Micro FocusUnknown08 Feb 201808 Feb 2018If you are a vendor and your product is affected, let
us know.View More &raquo

CVSS Metrics (Learn More)

Group
Score
Vector

Base
9.3
AV:N/AC:M/Au:N/C:C/I:C/A:C

Temporal
7.3
E:POC/RL:OF/RC:C

Environmental
7.3
CDP:ND/TD:ND/CR:ND/IR:ND/AR:ND

References

http://savannah.nongnu.org/forum/forum.php?forum_id=9095
http://cwe.mitre.org/data/definitions/119.html
http://cwe.mitre.org/data/definitions/125.html
http://cwe.mitre.org/data/definitions/228.html
http://cwe.mitre.org/data/definitions/415.html

Credit

The Quagga developers thank Alban Browaeys, Balaji Gurudoss, Borg, Scott Leggett and Debian QA Group, Eugene Bogomazov, Evgeny Uskov, Gerrie Roos, Mathieu Jadin, Pier Carlo Chiodi, and Rolf Eike Beer.
This document was written by Garret Wassermann.

Other Information

CVE IDs:
CVE-2018-5378
CVE-2018-5379
CVE-2018-5380
CVE-2018-5381

Date Public:
15 Feb 2018

Date First Published:
15 Feb 2018

Date Last Updated:
19 Feb 2018

Document Revision:
43

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