The remote Ubuntu 14.04 LTS / 16.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-3110-1 advisory.

    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.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:0794 advisory.

    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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

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)

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.

David Lamparter 发现 Quagga 未能正确处理某些 IPv6 路由器公告。远程攻击者可能利用此问题造成 Quagga 崩溃，从而导致拒绝服务。

请注意，Tenable Network Security 已直接从 Ubuntu 安全公告中提取上述描述块。Tenable 已尝试在不引入其他问题的情况下尽可能进行了自动整理和排版。

发现处理 IPv6 Neighbor Discovery 消息时，Quagga 路由套件中的 zebra 后台程序受到基于堆栈的缓冲区溢出影响。

quagga 更新现可用于 Red Hat Enterprise Linux 6。Red Hat 产品安全团队将此更新评级为具有中等安全影响。可从“参考”部分中的 CVE 链接获取通用漏洞评分系统 (CVSS) 基本分数，其针对每个漏洞给出了详细的严重性等级。quagga 程序包包含的 Quagga 是一个免费的网络路由软件套件，用于管理基于 TCP/IP 的协议。Quagga 支持 BGP4、BGP4+、OSPFv2、OSPFv3、RIPv1、RIPv2 和 RIPng 协议，可用作路由服务器和路由反射器。安全补丁：* 在 Quagga 处理 IPv6 路由器广告消息的方式中发现一个基于堆栈的缓冲区溢出缺陷。远程攻击者可利用此缺陷来造成 zebra 后台程序崩溃，从而导致拒绝服务。(CVE-2016-1245) * 在 Quagga BGP 路由后台程序 (bgpd) 处理标签 VPN SAFI 路由数据的方式中发现一个基于堆栈的缓冲区溢出缺陷。远程攻击者可利用此缺陷来造成 bgpd 后台程序崩溃，从而导致拒绝服务。(CVE-2016-2342) * 在 Quagga BGP 路由后台程序 (bgpd) 中发现一个拒绝服务缺陷。在某些情况下，远程攻击者可通过发送特别构建的数据包，造成 bgpd 后台程序崩溃，从而导致拒绝服务。(CVE-2016-4049) * 在 Quagga 中发现一个影响多个后台程序的拒绝服务缺陷。远程攻击者可利用此缺陷，导致多个暴露其 telnet 接口的 Quagga 后台程序崩溃。(CVE-2017-5495) * 在 Quagga OSPFD 后台程序处理 LSA（链路状态通告）数据包的方式中发现一个基于堆栈的缓冲区溢出缺陷。远程攻击者可利用此缺陷来造成 ospfd 后台程序崩溃，从而导致拒绝服务。(CVE-2013-2236) 其他更改：如需有关此发行版本的详细变更信息，请参阅可从“参考”部分链接的 Red Hat Enterprise Linux 6.9 版本说明与 Red Hat Enterprise Linux 6.9 技术札记。

安全修复：- 在 Quagga 处理 IPv6 路由器广告消息的方式中发现一个基于堆栈的缓冲区溢出缺陷。远程攻击者可利用此缺陷来造成 zebra 后台程序崩溃，从而导致拒绝服务。(CVE-2016-1245) - 在 Quagga BGP 路由后台程序 (bgpd) 处理标签 VPN SAFI 路由数据的方式中发现一个基于堆栈的缓冲区溢出缺陷。远程攻击者可利用此缺陷来造成 bgpd 后台程序崩溃，从而导致拒绝服务。(CVE-2016-2342) - 在 Quagga BGP 路由后台程序 (bgpd) 中发现一个拒绝服务缺陷。在某些情况下，远程攻击者可通过发送特别构建的数据包，造成 bgpd 后台程序崩溃，从而导致拒绝服务。(CVE-2016-4049) - 在 Quagga 中发现一个影响多个后台程序的拒绝服务缺陷。远程攻击者可利用此缺陷，导致多个暴露其 telnet 接口的 Quagga 后台程序崩溃。(CVE-2017-5495) - 在 Quagga OSPFD 后台程序处理 LSA（链路状态通告）数据包的方式中发现一个基于堆栈的缓冲区溢出缺陷。远程攻击者可利用此缺陷来造成 ospfd 后台程序崩溃，从而导致拒绝服务。(CVE-2013-2236)

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
94288	Ubuntu 14.04 LTS / 16.04 LTS : Quagga vulnerability (USN-3110-1)	Nessus	Ubuntu Local Security Checks	2016/10/26	2024/8/27	critical
97885	RHEL 6 : quagga (RHSA-2017:0794)	Nessus	Red Hat Local Security Checks	2017/3/22	2025/4/15	critical
99223	Scientific Linux Security Update : quagga on SL6.x i386/x86_64 (20170321)	Nessus	Scientific Linux Local Security Checks	2017/4/6	2021/1/14	critical
94524	Fedora 23 : quagga (2016-568c7ff4f6)	Nessus	Fedora Local Security Checks	2016/11/4	2021/1/11	critical
94288	Ubuntu 14.04 LTS / 16.04 LTS：Quagga 漏洞 (USN-3110-1)	Nessus	Ubuntu Local Security Checks	2016/10/26	2024/8/27	critical
94116	Debian DSA-3695-1：quagga - 安全更新	Nessus	Debian Local Security Checks	2016/10/19	2021/1/11	critical
97885	RHEL 6：quagga (RHSA-2017:0794)	Nessus	Red Hat Local Security Checks	2017/3/22	2025/4/15	critical
99223	Scientific Linux 安全更新：SL6.x i386/x86_64 中的 quagga	Nessus	Scientific Linux Local Security Checks	2017/4/6	2021/1/14	critical

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