ProFTPD CommandBufferSize远程拒绝服务漏洞

ProFTPD是一款开放源代码FTP服务程序。 ProFTPD在处理用户请求时存在漏洞，如果启用了CommandBufferSize选项的话，则ProFTPD的main.c文件中cmd_loop()函数就可能没有正确验证FTP命令的缓冲区大小限制，导致拒绝服务。 ProFTPD Project ProFTPD 1.3 Debian ------ Debian已经为此发布了一个安全公告（DSA-1218-1）以及相应补丁: DSA-1218-1：New proftpd packages fix denial of service 链接：<a href="http://www.debian.org/security/2005/dsa-1218" target="_blank">http://www.debian.org/security/2005/dsa-1218</a> 补丁下载： Source archives: <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2.dsc" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2.dsc</a> Size/MD5 checksum: 897 fe043ac01a1753ba7d47e169d7863039 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2.diff.gz" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2.diff.gz</a> Size/MD5 checksum: 127600 d1611a9db379bee3e1f137c4c09d4b13 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10.orig.tar.gz" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10.orig.tar.gz</a> Size/MD5 checksum: 920495 7d2bc5b4b1eef459a78e55c027a4f3c4 Architecture independent components: <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-doc_1.2.10-15sarge2_all.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-doc_1.2.10-15sarge2_all.deb</a> Size/MD5 checksum: 422520 784f6a1ead480a7198dd0ad7df4c6d7d Alpha architecture: <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_alpha.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_alpha.deb</a> Size/MD5 checksum: 444406 dd457de80a77a65ea56f917ed8503641 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_alpha.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_alpha.deb</a> Size/MD5 checksum: 200788 0d3e2ba8ea9082b304a2c7f4d6af8df9 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_alpha.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_alpha.deb</a> Size/MD5 checksum: 457204 17af0e330f48108785aa9d00507c5291 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_alpha.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_alpha.deb</a> Size/MD5 checksum: 476800 dffaa2aad3f25eb2887005c27059b241 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_alpha.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_alpha.deb</a> Size/MD5 checksum: 476468 0c7be08d97b11f187c39f8a965b9e3c6 AMD64 architecture: <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_amd64.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_amd64.deb</a> Size/MD5 checksum: 389010 2fd7461b794783671e641d72488c4585 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_amd64.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_amd64.deb</a> Size/MD5 checksum: 194562 3113db8aa6ba8e67dcea03632cf6fe67 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_amd64.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_amd64.deb</a> Size/MD5 checksum: 400008 3a89749eb456ea237ca4d82ae18e4beb <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_amd64.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_amd64.deb</a> Size/MD5 checksum: 415382 302debcfd6ff112e7294959addcdc1d6 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_amd64.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_amd64.deb</a> Size/MD5 checksum: 415174 51c2c6374d0483191874f96dd7318a27 ARM architecture: <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_arm.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_arm.deb</a> Size/MD5 checksum: 373836 b740b9aa079946e4d2cbf323ae72a978 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_arm.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_arm.deb</a> Size/MD5 checksum: 188754 5ffae3af9d619b301595ea9b1175ef37 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_arm.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_arm.deb</a> Size/MD5 checksum: 384048 8beac5c897580847d39427097efd5116 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_arm.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_arm.deb</a> Size/MD5 checksum: 398914 5470be96f5ad34f83d1042139c6a639e <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_arm.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_arm.deb</a> Size/MD5 checksum: 398778 ae4abd419715b09b9a7bcc1f3e23eb96 HP Precision architecture: <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_hppa.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_hppa.deb</a> Size/MD5 checksum: 403664 e19be25ea86f75de8fb0015837e47e57 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_hppa.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_hppa.deb</a> Size/MD5 checksum: 194452 65616d5eed9a3270e0df3086ad87a8a7 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_hppa.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_hppa.deb</a> Size/MD5 checksum: 414846 5ce90027122e3a27646cc314854ea37e <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_hppa.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_hppa.deb</a> Size/MD5 checksum: 431778 5deb145cbaacd0cbee298a0f6a02f6d2 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_hppa.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_hppa.deb</a> Size/MD5 checksum: 431492 9b950e59b183a6795d5eacb2002bf03c Intel IA-32 architecture: <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_i386.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_i386.deb</a> Size/MD5 checksum: 371202 efa3cca67db44225ecf7990ee8b76808 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_i386.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_i386.deb</a> Size/MD5 checksum: 188864 6129e4a1b65440c57e6e76e104025cf4 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_i386.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_i386.deb</a> Size/MD5 checksum: 380918 2de20dc3d336007347871007ad2aa9b6 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_i386.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_i386.deb</a> Size/MD5 checksum: 396670 2b6a3833f37f256ac0268bf03d25dfd8 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_i386.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_i386.deb</a> Size/MD5 checksum: 396432 ba26cbd5cfa7cd9d06c94baad26864b3 Intel IA-64 architecture: <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_ia64.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_ia64.deb</a> Size/MD5 checksum: 519710 30aa10cfda1d97d81772d9a9fff3ef4c <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_ia64.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_ia64.deb</a> Size/MD5 checksum: 206994 1eefe822ebe9df3b584f719db1e6e263 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_ia64.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_ia64.deb</a> Size/MD5 checksum: 535338 4108fe33e7d1e6827e1545ea6ebfff7e <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_ia64.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_ia64.deb</a> Size/MD5 checksum: 562320 0ee714edb0c79544904c0db855daf174 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_ia64.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_ia64.deb</a> Size/MD5 checksum: 562214 4714a62fff2346f1d376f4306e0c6974 Motorola 680x0 architecture: <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_m68k.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_m68k.deb</a> Size/MD5 checksum: 332528 3ad435ced0a1492fd61ae55c90204ad1 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_m68k.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_m68k.deb</a> Size/MD5 checksum: 187148 312a33fd15cfc35bd182d84ea847c852 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_m68k.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_m68k.deb</a> Size/MD5 checksum: 340916 adf942ec807fd5a39fdb9707226921bc <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_m68k.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_m68k.deb</a> Size/MD5 checksum: 353106 d724b6da9758c7bd3c4a4dfee4411306 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_m68k.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_m68k.deb</a> Size/MD5 checksum: 352830 5a090fa4b611c42a907919a88861eb9a Big endian MIPS architecture: <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_mips.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_mips.deb</a> Size/MD5 checksum: 382394 7e6c7b8b92827f3a6644689b0d06ef4e <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_mips.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_mips.deb</a> Size/MD5 checksum: 201616 fb61630fd14f0520518f78d198b15480 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_mips.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_mips.deb</a> Size/MD5 checksum: 391986 0ffbc86ea82bd910466c367f156af4be <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_mips.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_mips.deb</a> Size/MD5 checksum: 406488 2dff85fe8dc813c5be15780765a90a74 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_mips.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_mips.deb</a> Size/MD5 checksum: 406238 1d658816888f361611ef7c7a41062f62 Little endian MIPS architecture: <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_mipsel.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_mipsel.deb</a> Size/MD5 checksum: 384334 ea408f73dd5288c3dbdd15556cb4c884 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_mipsel.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_mipsel.deb</a> Size/MD5 checksum: 201838 a2c8ed17d8c6dbfe3ff0a359ec8402fd <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_mipsel.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_mipsel.deb</a> Size/MD5 checksum: 393390 f6396ba4684fec2a4bd2b8a156c617a8 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_mipsel.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_mipsel.deb</a> Size/MD5 checksum: 409460 403eb9064b44dfb5c4f5c64e3d11b43e <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_mipsel.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_mipsel.deb</a> Size/MD5 checksum: 409212 e1226c8b018ced87ad77118c660d0361 PowerPC architecture: <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_powerpc.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_powerpc.deb</a> Size/MD5 checksum: 384414 3cc172a7ddaf95a37905ce0ca2fc340f <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_powerpc.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_powerpc.deb</a> Size/MD5 checksum: 195366 d3db9b92cf67136399f153e804a168bd <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_powerpc.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_powerpc.deb</a> Size/MD5 checksum: 395170 9f26106f211808f807bfde1c2911629a <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_powerpc.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_powerpc.deb</a> Size/MD5 checksum: 412014 3a0d74322ba454ee72e0925cb871c3f5 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_powerpc.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_powerpc.deb</a> Size/MD5 checksum: 411760 2611181a4d8cb329bea9d9d0db130b31 IBM S/390 architecture: <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_s390.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_s390.deb</a> Size/MD5 checksum: 379686 06371d89be06ba9c16152ef8d0164f9b <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_s390.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_s390.deb</a> Size/MD5 checksum: 192976 5a2c80cb11cd89c008a978b2e235bd45 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_s390.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_s390.deb</a> Size/MD5 checksum: 390112 ee494ba31925ba491ba72152a7fd0a88 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_s390.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_s390.deb</a> Size/MD5 checksum: 403944 c38a72652bef06f11e87fa28ab48d86c <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_s390.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_s390.deb</a> Size/MD5 checksum: 403734 2af77df7a25f5f5ed2b2d06c6fcd6ae3 Sun Sparc architecture: <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_sparc.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd_1.2.10-15sarge2_sparc.deb</a> Size/MD5 checksum: 369674 8dd5a9ec08ae54bcbc89ba8b6d695c87 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_sparc.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-common_1.2.10-15sarge2_sparc.deb</a> Size/MD5 checksum: 188988 03998811bf00f61f9c52f79ee5150978 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_sparc.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-ldap_1.2.10-15sarge2_sparc.deb</a> Size/MD5 checksum: 379464 fefd89407a8e0fdbc50a5398820aaa3c <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_sparc.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-mysql_1.2.10-15sarge2_sparc.deb</a> Size/MD5 checksum: 394890 6d62112d1257db0c993e33d075f7adb3 <a href="http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_sparc.deb" target="_blank">http://security.debian.org/pool/updates/main/p/proftpd/proftpd-pgsql_1.2.10-15sarge2_sparc.deb</a> Size/MD5 checksum: 394654 ada057a72951b1aa06d599b6e41bc503 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 ProFTPD Project --------------- 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： <a href="http://proftp.cvs.sourceforge.net/proftp/proftpd/src/main.c?r1=text&amp;r2=text&amp;tr1=1.292&amp;tr2=1.294&amp;view=patch" target="_blank">http://proftp.cvs.sourceforge.net/proftp/proftpd/src/main.c?r1=text&amp;r2=text&amp;tr1=1.292&amp;tr2=1.294&amp;view=patch</a>