It was discovered that the zebra daemon in Quagga before 1.0.20161017 suffered from a stack-based buffer overflow when processing IPv6 Neighbor Discovery messages. The root cause was relying on BUFSIZ to be compatible with a message size; however, BUFSIZ is system-dependent.

According to the versions of the quagga package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - It was discovered that the zebra daemon in Quagga     before 1.0.20161017 suffered from a stack-based buffer     overflow when processing IPv6 Neighbor Discovery     messages. The root cause was relying on BUFSIZ to be     compatible with a message size however, BUFSIZ is     system-dependent.(CVE-2016-1245)

  - Open Shortest Path First (OSPF) protocol     implementations may improperly determine Link State     Advertisement (LSA) recency for LSAs with     MaxSequenceNumber. According to RFC 2328 section 13.1,     for two instances of the same LSA, recency is     determined by first comparing sequence numbers, then     checksums, and finally MaxAge. In a case where the     sequence numbers are the same, the LSA with the larger     checksum is considered more recent, and will not be     flushed from the Link State Database (LSDB). Since the     RFC does not explicitly state that the values of links     carried by a LSA must be the same when prematurely     aging a self-originating LSA with MaxSequenceNumber, it     is possible in vulnerable OSPF implementations for an     attacker to craft a LSA with MaxSequenceNumber and     invalid links that will result in a larger checksum and     thus a 'newer' LSA that will not be flushed from the     LSDB. Propagation of the crafted LSA can result in the     erasure or alteration of the routing tables of routers     within the routing domain, creating a denial of service     condition or the re-routing of traffic on the network.
    CVE-2017-3224 has been reserved for Quagga and     downstream implementations (SUSE, openSUSE, and Red Hat     packages).(CVE-2017-3224)

  - The bgp_dump_routes_func function in bgpd/bgp_dump.c in     Quagga does not perform size checks when dumping data,     which might allow remote attackers to cause a denial of     service (assertion failure and daemon crash) via a     large BGP packet.(CVE-2016-4049)

  - The bgp_nlri_parse_vpnv4 function in bgp_mplsvpn.c in     the VPNv4 NLRI parser in bgpd in Quagga before     1.0.20160309, when a certain VPNv4 configuration is     used, relies on a Labeled-VPN SAFI routes-data length     field during a data copy, which allows remote attackers     to execute arbitrary code or cause a denial of service     (stack-based buffer overflow) via a crafted     packet.(CVE-2016-2342)

  - The Quagga BGP daemon (bgpd) prior to version 1.2.3 can     overrun internal BGP code-to-string conversion tables     used for debug by 1 pointer value, based on     input.(CVE-2018-5380)

  - The Quagga BGP daemon (bgpd) prior to version 1.2.3 has     a bug in its parsing of 'Capabilities' 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, causing a denial     of service.(CVE-2018-5381)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the quagga package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - Open Shortest Path First (OSPF) protocol     implementations may improperly determine Link State     Advertisement (LSA) recency for LSAs with     MaxSequenceNumber. According to RFC 2328 section 13.1,     for two instances of the same LSA, recency is     determined by first comparing sequence numbers, then     checksums, and finally MaxAge. In a case where the     sequence numbers are the same, the LSA with the larger     checksum is considered more recent, and will not be     flushed from the Link State Database (LSDB). Since the     RFC does not explicitly state that the values of links     carried by a LSA must be the same when prematurely     aging a self-originating LSA with MaxSequenceNumber, it     is possible in vulnerable OSPF implementations for an     attacker to craft a LSA with MaxSequenceNumber and     invalid links that will result in a larger checksum and     thus a 'newer' LSA that will not be flushed from the     LSDB. Propagation of the crafted LSA can result in the     erasure or alteration of the routing tables of routers     within the routing domain, creating a denial of service     condition or the re-routing of traffic on the network.
    CVE-2017-3224 has been reserved for Quagga and     downstream implementations (SUSE, openSUSE, and Red Hat     packages).(CVE-2017-3224)

  - The bgp_dump_routes_func function in bgpd/bgp_dump.c in     Quagga does not perform size checks when dumping data,     which might allow remote attackers to cause a denial of     service (assertion failure and daemon crash) via a     large BGP packet.(CVE-2016-4049)

  - The bgp_nlri_parse_vpnv4 function in bgp_mplsvpn.c in     the VPNv4 NLRI parser in bgpd in Quagga before     1.0.20160309, when a certain VPNv4 configuration is     used, relies on a Labeled-VPN SAFI routes-data length     field during a data copy, which allows remote attackers     to execute arbitrary code or cause a denial of service     (stack-based buffer overflow) via a crafted     packet.(CVE-2016-2342)

  - The Quagga BGP daemon (bgpd) prior to version 1.2.3 can     overrun internal BGP code-to-string conversion tables     used for debug by 1 pointer value, based on     input.(CVE-2018-5380)

  - The Quagga BGP daemon (bgpd) prior to version 1.2.3 has     a bug in its parsing of 'Capabilities' 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, causing a denial     of service.(CVE-2018-5381)

  - It was discovered that the zebra daemon in Quagga     before 1.0.20161017 suffered from a stack-based buffer     overflow when processing IPv6 Neighbor Discovery     messages. The root cause was relying on BUFSIZ to be     compatible with a message size however, BUFSIZ is     system-dependent.(CVE-2016-1245)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the quagga package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - It was discovered that the zebra daemon in Quagga     before 1.0.20161017 suffered from a stack-based buffer     overflow when processing IPv6 Neighbor Discovery     messages. The root cause was relying on BUFSIZ to be     compatible with a message size however, BUFSIZ is     system-dependent.(CVE-2016-1245)

  - The Quagga BGP daemon (bgpd) prior to version 1.2.3 can     overrun internal BGP code-to-string conversion tables     used for debug by 1 pointer value, based on     input.(CVE-2018-5380)

  - The Quagga BGP daemon (bgpd) prior to version 1.2.3 has     a bug in its parsing of 'Capabilities' 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, causing a denial     of service.(CVE-2018-5381)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote NewStart CGSL host, running version MAIN 4.05, has quagga packages installed that are affected by multiple vulnerabilities:

  - A denial of service flaw affecting various daemons in     Quagga was found. A remote attacker could use this flaw     to cause the various Quagga daemons, which expose their     telnet interface, to crash. (CVE-2017-5495)

  - A stack-based buffer overflow flaw was found in the way     Quagga handled IPv6 router advertisement messages. A     remote attacker could use this flaw to crash the zebra     daemon resulting in denial of service. (CVE-2016-1245)

  - A denial of service flaw was found in the Quagga BGP     routing daemon (bgpd). Under certain circumstances, a     remote attacker could send a crafted packet to crash the     bgpd daemon resulting in denial of service.
    (CVE-2016-4049)

  - A stack-based buffer overflow flaw was found in the way     the Quagga BGP routing daemon (bgpd) handled Labeled-VPN     SAFI routes data. A remote attacker could use this flaw     to crash the bgpd daemon resulting in denial of service.
    (CVE-2016-2342)

  - A stack-based buffer overflow flaw was found in the way     the Quagga OSPFD daemon handled LSA (link-state     advertisement) packets. A remote attacker could use this     flaw to crash the ospfd daemon resulting in denial of     service. (CVE-2013-2236)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

This update provides Quagga 1.1.1, which brings several fixes and enhancements. Security issues fixed :

  - CVE-2017-5495: Telnet 'vty' interface DoS due to     unbounded memory allocation. (bsc#1021669)

  - CVE-2016-1245: Stack overrun in IPv6 RA receive code.
    (bsc#1005258) Bug fixes :

  - Do not enable zebra's TCP interface (port 2600) to use     default UNIX socket for communication between the     daemons. (fate#323170) Between 0.99.22.1 and 1.1.1 the     following improvements have been implemented :

  - Changed the default of 'link-detect' state, controlling     whether zebra will respond to link-state events and     consider an interface to be down when link is down. To     retain the current behavior save your config before     updating, otherwise remove the 'link-detect' flag from     your config prior to updating. There is also a new     global 'default link-detect (on|off)' flag to configure     the global default.

  - Greatly improved nexthop resolution for recursive     routes.

  - Event driven nexthop resolution for BGP.

  - Route tags support.

  - Transport of TE related metrics over OSPF, IS-IS.

  - IPv6 Multipath for zebra and BGP.

  - Multicast RIB support has been extended. It still is     IPv4 only.

  - RIP for IPv4 now supports equal-cost multipath (ECMP).

  - route-maps have a new action 'set ipv6 next-hop     peer-address'.

  - route-maps have a new action 'set as-path prepend     last-as'.

  - 'next-hop-self all' to override nexthop on iBGP route     reflector setups.

  - New pimd daemon provides IPv4 PIM-SSM multicast routing.

  - IPv6 address management has been improved regarding     tentative addresses. This is visible in that a freshly     configured address will not immediately be marked as     usable.

  - Recursive route support has been overhauled. Scripts     parsing 'show ip route' output may need adaptation.

  - A large amount of changes has been merged for ospf6d.
    Careful evaluation prior to deployment is recommended.

  - Multiprotocol peerings over IPv6 now try to find a more     appropriate IPv4 nexthop by looking at the interface.

  - Relaxed bestpath criteria for multipath and improved     display of multipath routes in 'show ip bgp'. Scripts     parsing this output may need to be updated.

  - Support for iBGP TTL security.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Security Fix(es) :

  - A stack-based buffer overflow flaw was found in the way     Quagga handled IPv6 router advertisement messages. A     remote attacker could use this flaw to crash the zebra     daemon resulting in denial of service. (CVE-2016-1245)

  - A stack-based buffer overflow flaw was found in the way     the Quagga BGP routing daemon (bgpd) handled Labeled-VPN     SAFI routes data. A remote attacker could use this flaw     to crash the bgpd daemon resulting in denial of service.
    (CVE-2016-2342)

  - A denial of service flaw was found in the Quagga BGP     routing daemon (bgpd). Under certain circumstances, a     remote attacker could send a crafted packet to crash the     bgpd daemon resulting in denial of service.
    (CVE-2016-4049)

  - A denial of service flaw affecting various daemons in     Quagga was found. A remote attacker could use this flaw     to cause the various Quagga daemons, which expose their     telnet interface, to crash. (CVE-2017-5495)

  - A stack-based buffer overflow flaw was found in the way     the Quagga OSPFD daemon handled LSA (link-state     advertisement) packets. A remote attacker could use this     flaw to crash the ospfd daemon resulting in denial of     service. (CVE-2013-2236)

From Red Hat Security Advisory 2017:0794 :

An update for quagga is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The quagga packages contain Quagga, the free network-routing software suite that manages TCP/IP based protocols. Quagga supports the BGP4, BGP4+, OSPFv2, OSPFv3, RIPv1, RIPv2, and RIPng protocols, and is intended to be used as a Route Server and Route Reflector.

Security Fix(es) :

* A stack-based buffer overflow flaw was found in the way Quagga handled IPv6 router advertisement messages. A remote attacker could use this flaw to crash the zebra daemon resulting in denial of service. (CVE-2016-1245)

* A stack-based buffer overflow flaw was found in the way the Quagga BGP routing daemon (bgpd) handled Labeled-VPN SAFI routes data. A remote attacker could use this flaw to crash the bgpd daemon resulting in denial of service. (CVE-2016-2342)

* A denial of service flaw was found in the Quagga BGP routing daemon (bgpd). Under certain circumstances, a remote attacker could send a crafted packet to crash the bgpd daemon resulting in denial of service. (CVE-2016-4049)

* A denial of service flaw affecting various daemons in Quagga was found. A remote attacker could use this flaw to cause the various Quagga daemons, which expose their telnet interface, to crash.
(CVE-2017-5495)

* A stack-based buffer overflow flaw was found in the way the Quagga OSPFD daemon handled LSA (link-state advertisement) packets. A remote attacker could use this flaw to crash the ospfd daemon resulting in denial of service. (CVE-2013-2236)

Additional Changes :

For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.9 Release Notes and Red Hat Enterprise Linux 6.9 Technical Notes linked from the References section.

An update for quagga is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The quagga packages contain Quagga, the free network-routing software suite that manages TCP/IP based protocols. Quagga supports the BGP4, BGP4+, OSPFv2, OSPFv3, RIPv1, RIPv2, and RIPng protocols, and is intended to be used as a Route Server and Route Reflector.

Security Fix(es) :

* A stack-based buffer overflow flaw was found in the way Quagga handled IPv6 router advertisement messages. A remote attacker could use this flaw to crash the zebra daemon resulting in denial of service. (CVE-2016-1245)

* A stack-based buffer overflow flaw was found in the way the Quagga BGP routing daemon (bgpd) handled Labeled-VPN SAFI routes data. A remote attacker could use this flaw to crash the bgpd daemon resulting in denial of service. (CVE-2016-2342)

* A denial of service flaw was found in the Quagga BGP routing daemon (bgpd). Under certain circumstances, a remote attacker could send a crafted packet to crash the bgpd daemon resulting in denial of service. (CVE-2016-4049)

* A denial of service flaw affecting various daemons in Quagga was found. A remote attacker could use this flaw to cause the various Quagga daemons, which expose their telnet interface, to crash.
(CVE-2017-5495)

* A stack-based buffer overflow flaw was found in the way the Quagga OSPFD daemon handled LSA (link-state advertisement) packets. A remote attacker could use this flaw to crash the ospfd daemon resulting in denial of service. (CVE-2013-2236)

Additional Changes :

For detailed information on changes in this release, see the Red Hat Enterprise Linux 6.9 Release Notes and Red Hat Enterprise Linux 6.9 Technical Notes linked from the References section.

The remote host is affected by the vulnerability described in GLSA-201701-48 (Quagga: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Quagga. Please review       the CVE identifiers referenced below for details.
  Impact :

    A remote attacker could send a specially crafted packet possibly       resulting in the execution of arbitrary code with the privileges of the       process or a Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

This update addresses multiple security problems and fixes systemd dependencies.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for quagga fixes the following issue :

  - CVE-2016-1245: Fix for a zebra stack overrun in IPv6 RA     receive code. (bsc#1005258).

David Lamparter discovered that Quagga incorrectly handled certain IPv6 router advertisements. A remote attacker could possibly use this issue to cause Quagga to crash, resulting in a denial of service.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for quagga fixes the following issue :

  - CVE-2016-1245: Fix for a zebra stack overrun in IPv6 RA     receive code (bsc#1005258).

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for quagga fixes the following issues :

  - CVE-2016-1245: Fix for a zebra stack overrun in IPv6 RA     receive code (bsc#1005258).

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

It was discovered that the zebra daemon in the Quagga routing suite suffered from a stack-based buffer overflow when processing IPv6 Neighbor Discovery messages.

It was discovered that there was stack overrun in IPv6 RA receive code in quagga, a BGP/OSPF/RIP routing daemon.

The buffer size specified when receiving mixed up two constants that have different values.

For Debian 7 'Wheezy', this issue has been fixed in quagga version 0.99.22.4-1+wheezy3+deb7u1.

We recommend that you upgrade your quagga packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
132192	EulerOS 2.0 SP3 : quagga (EulerOS-SA-2019-2657)	Nessus	Huawei Local Security Checks	critical
131900	EulerOS 2.0 SP2 : quagga (EulerOS-SA-2019-2408)	Nessus	Huawei Local Security Checks	critical
130690	EulerOS 2.0 SP5 : quagga (EulerOS-SA-2019-2228)	Nessus	Huawei Local Security Checks	critical
127329	NewStart CGSL MAIN 4.05 : quagga Multiple Vulnerabilities (NS-SA-2019-0101)	Nessus	NewStart CGSL Local Security Checks	critical
102841	SUSE SLES12 Security Update : quagga (SUSE-SU-2017:2294-1)	Nessus	SuSE Local Security Checks	critical
99223	Scientific Linux Security Update : quagga on SL6.x i386/x86_64 (20170321)	Nessus	Scientific Linux Local Security Checks	critical
99073	Oracle Linux 6 : quagga (ELSA-2017-0794)	Nessus	Oracle Linux Local Security Checks	critical
97961	CentOS 6 : quagga (CESA-2017:0794)	Nessus	CentOS Local Security Checks	critical
97885	RHEL 6 : quagga (RHSA-2017:0794)	Nessus	Red Hat Local Security Checks	critical
96683	GLSA-201701-48 : Quagga: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
95010	Fedora 25 : quagga (2016-8acc6b66f1)	Nessus	Fedora Local Security Checks	critical
94526	Fedora 24 : quagga (2016-cae6456f63)	Nessus	Fedora Local Security Checks	critical
94524	Fedora 23 : quagga (2016-568c7ff4f6)	Nessus	Fedora Local Security Checks	critical
94308	openSUSE Security Update : quagga (openSUSE-2016-1233)	Nessus	SuSE Local Security Checks	critical
94288	Ubuntu 14.04 LTS / 16.04 LTS : Quagga vulnerability (USN-3110-1)	Nessus	Ubuntu Local Security Checks	critical
94282	SUSE SLES12 Security Update : quagga (SUSE-SU-2016:2618-1)	Nessus	SuSE Local Security Checks	critical
94273	SUSE SLES11 Security Update : quagga (SUSE-SU-2016:2569-1)	Nessus	SuSE Local Security Checks	critical
94245	openSUSE Security Update : quagga (openSUSE-2016-1225)	Nessus	SuSE Local Security Checks	critical
94116	Debian DSA-3695-1 : quagga - security update	Nessus	Debian Local Security Checks	critical
94110	Debian DLA-662-1 : quagga security update	Nessus	Debian Local Security Checks	critical

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