发布日期：2010-08-24
更新日期：2010-09-02

受影响系统：

Quagga Quagga Routing Software Suite < 0.99.17

不受影响系统：

Quagga Quagga Routing Software Suite 0.99.17

描述：

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BUGTRAQ  ID: 42642
CVE(CAN) ID: CVE-2010-2949

Quagga是一个路由软件套件，可在Unix平台上实现多种路由协议。

Quagga的bgpd守护程序在解析AS的路径时存在空指针引用漏洞，配置的BGP对等端可以发送带有未知AS类型的BGP更新请求导致守护程序崩溃。

<*来源：Chris Hall
  
  链接：http://secunia.com/advisories/41038/
        https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=626795
        http://permalink.gmane.org/gmane.comp.security.oss.general/3347
        http://www.debian.org/security/2010/dsa-2104
*>

建议：

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厂商补丁：

Debian
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Debian已经为此发布了一个安全公告（DSA-2104-1）以及相应补丁:
DSA-2104-1：New quagga packages fix denial of service
链接：http://www.debian.org/security/2010/dsa-2104

补丁下载：
Source archives:

http://security.debian.org/pool/updates/main/q/quagga/quagga_0.99.10.orig.tar.gz
Size/MD5 checksum:  2424191 c7a2d92e1c42214afef9b2e1cd4b5d06
http://security.debian.org/pool/updates/main/q/quagga/quagga_0.99.10-1lenny3.diff.gz
Size/MD5 checksum:    42826 100dbb936b3b0f0d4fb4947bf384d369
http://security.debian.org/pool/updates/main/q/quagga/quagga_0.99.10-1lenny3.dsc
Size/MD5 checksum:     1651 f5b9c26538e9d32008ad0256fe4ad0ed

Architecture independent packages:

http://security.debian.org/pool/updates/main/q/quagga/quagga-doc_0.99.10-1lenny3_all.deb
Size/MD5 checksum:   661354 f843c6f765a48f7e071a52d3c7834d2f

alpha architecture (DEC Alpha)

http://security.debian.org/pool/updates/main/q/quagga/quagga_0.99.10-1lenny3_alpha.deb
Size/MD5 checksum:  1902990 0f85c30d5f719f9c104f5a8977a5d1a0

amd64 architecture (AMD x86_64 (AMD64))

http://security.debian.org/pool/updates/main/q/quagga/quagga_0.99.10-1lenny3_amd64.deb
Size/MD5 checksum:  1749952 89a53689c4daf3f0695ea2c21aa93254

arm architecture (ARM)

http://security.debian.org/pool/updates/main/q/quagga/quagga_0.99.10-1lenny3_arm.deb
Size/MD5 checksum:  1449792 3c53e06e4d27ef8cf391533824668b19

armel architecture (ARM EABI)

http://security.debian.org/pool/updates/main/q/quagga/quagga_0.99.10-1lenny3_armel.deb
Size/MD5 checksum:  1457202 e52ae364e20ff137c5e0e5f75bfc1ec1

hppa architecture (HP PA RISC)

http://security.debian.org/pool/updates/main/q/quagga/quagga_0.99.10-1lenny3_hppa.deb
Size/MD5 checksum:  1683924 c8172ed22b010569949977f407c282b6

i386 architecture (Intel ia32)

http://security.debian.org/pool/updates/main/q/quagga/quagga_0.99.10-1lenny3_i386.deb
Size/MD5 checksum:  1608678 e7b5fbd36e4466cdecaca46f1f96642b

ia64 architecture (Intel ia64)

http://security.debian.org/pool/updates/main/q/quagga/quagga_0.99.10-1lenny3_ia64.deb
Size/MD5 checksum:  2256144 75ebe4e12a3e22ef79e5e3dab2d457bf

mips architecture (MIPS (Big Endian))

http://security.debian.org/pool/updates/main/q/quagga/quagga_0.99.10-1lenny3_mips.deb
Size/MD5 checksum:  1605990 f33ef3d9b31f0da900aba6a20bdd188d

mipsel architecture (MIPS (Little Endian))

http://security.debian.org/pool/updates/main/q/quagga/quagga_0.99.10-1lenny3_mipsel.deb
Size/MD5 checksum:  1601240 68ff751ff9c022cc06db8d0d66895a6e

powerpc architecture (PowerPC)

http://security.debian.org/pool/updates/main/q/quagga/quagga_0.99.10-1lenny3_powerpc.deb
Size/MD5 checksum:  1717802 931505a31bdcc1a7732a9a2e9f295a01

s390 architecture (IBM S/390)

http://security.debian.org/pool/updates/main/q/quagga/quagga_0.99.10-1lenny3_s390.deb
Size/MD5 checksum:  1794990 7d52667f3f37553256e87b77450dc309

sparc architecture (Sun SPARC/UltraSPARC)

http://security.debian.org/pool/updates/main/q/quagga/quagga_0.99.10-1lenny3_sparc.deb
Size/MD5 checksum:  1671232 3706818c39b51bb45c58a0cf8fdba202

补丁安装方法：

1. 手工安装补丁包：

  首先，使用下面的命令来下载补丁软件：
  # wget url  (url是补丁下载链接地址)

  然后，使用下面的命令来安装补丁：  
  # dpkg -i file.deb (file是相应的补丁名)

2. 使用apt-get自动安装补丁包：

   首先，使用下面的命令更新内部数据库：
   # apt-get update
  
   然后，使用下面的命令安装更新软件包：
   # apt-get upgrade

Quagga
------
目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载：

http://www.quagga.net/news2.php?y=2010&m=8&d=19#id1282241100

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