安全研究
安全漏洞
GnuPG内置签名验证漏洞
发布日期：2006-03-09
更新日期：2006-03-14
受影响系统：
GNU Privacy Guard < 1.4.2.2不受影响系统：
GNU Privacy Guard 1.4.2.2描述：
BUGTRAQ ID: 17058
CVE(CAN) ID: CVE-2006-0049
GnuPG是基于OpenPGP标准的PGP加密、解密、签名工具。
GnuPG在处理邮件内置的签名时存在验证漏洞，攻击者可能利用此漏洞在邮件中插入额外的数据。
GnuPG在提取已签名的数据时，数据可能前置或后缀了签名没有没有覆盖到的额外数据，这样攻击者就可以利用签名消息注入额外的任意数据。
<*来源：Werner Koch （wk@gnupg.org）
Tavis Ormandy （taviso@gentoo.org）
链接：http://marc.theaimsgroup.com/?l=bugtraq&m=114201635307680&w=2
http://www.debian.org/security/2006/dsa-993
http://security.gentoo.org/glsa/glsa-200603-08.xml
*>
建议：
厂商补丁：
Debian
------
Debian已经为此发布了一个安全公告（DSA-993-2）以及相应补丁:
DSA-993-2：New GnuPG packages fix broken signature check
链接：http://www.debian.org/security/2005/dsa-993
补丁下载：
Source archives:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.0.6-4woody5.dsc
Size/MD5 checksum: 579 b34d5a5996b358e713e2e8bb71dc6404
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.0.6-4woody5.diff.gz
Size/MD5 checksum: 7866 5e36a3c06fae2b3d96a9db65988fffbd
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.0.6.orig.tar.gz
Size/MD5 checksum: 1941676 7c319a9e5e70ad9bc3bf0d7b5008a508
Alpha architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.0.6-4woody5_alpha.deb
Size/MD5 checksum: 1150716 ff72280db81dbc60041cd91a0d307ee6
ARM architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.0.6-4woody5_arm.deb
Size/MD5 checksum: 987194 1ca0bbdaaec049b128996cdd9f776834
Intel IA-32 architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.0.6-4woody5_i386.deb
Size/MD5 checksum: 966800 52e985fbb5e9bcd7baa320c549b7b70c
Intel IA-64 architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.0.6-4woody5_ia64.deb
Size/MD5 checksum: 1271958 27317f852e24ce3784ec62aec0860c6a
HP Precision architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.0.6-4woody5_hppa.deb
Size/MD5 checksum: 1059666 5b73bdfab02c7c8184b58db2c3e0b240
Motorola 680x0 architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.0.6-4woody5_m68k.deb
Size/MD5 checksum: 942614 c15e8b65687c52530e48665669dde8c3
Big endian MIPS architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.0.6-4woody5_mips.deb
Size/MD5 checksum: 1035974 ce95aa0adb6060fc68119c4df3492293
Little endian MIPS architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.0.6-4woody5_mipsel.deb
Size/MD5 checksum: 1036400 f40b42f381d7f04004f219c16de542fc
PowerPC architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.0.6-4woody5_powerpc.deb
Size/MD5 checksum: 1009720 8b0372d551b48829ce6be7d0f69f6559
IBM S/390 architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.0.6-4woody5_s390.deb
Size/MD5 checksum: 1002210 deef79ef16b8f5bac2b32f912caac46c
Sun Sparc architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.0.6-4woody5_sparc.deb
Size/MD5 checksum: 1003974 2bf876aa4b6a50cb3aadb7ef2e233f69
Debian GNU/Linux 3.1 alias sarge
- --------------------------------
Source archives:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.4.1-1.sarge3.dsc
Size/MD5 checksum: 680 8f2f1848dcdfe9d143d8e9352ef918ca
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.4.1-1.sarge3.diff.gz
Size/MD5 checksum: 19639 9ffb89fa0a770568ddd80a11e3eada78
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.4.1.orig.tar.gz
Size/MD5 checksum: 4059170 1cc77c6943baaa711222e954bbd785e5
Alpha architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.4.1-1.sarge3_alpha.deb
Size/MD5 checksum: 2155538 07b4643bf4cd05639a261fa0b3fa6a89
AMD64 architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.4.1-1.sarge3_amd64.deb
Size/MD5 checksum: 1963222 52cdf1bb1a228427abd31abff411a946
ARM architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.4.1-1.sarge3_arm.deb
Size/MD5 checksum: 1899232 c52b0d652506e2384340d67f8126a1b2
Intel IA-32 architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.4.1-1.sarge3_i386.deb
Size/MD5 checksum: 1908754 cd9c2257b8c7149a92131abbdaef498c
Intel IA-64 architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.4.1-1.sarge3_ia64.deb
Size/MD5 checksum: 2324736 3553c75fac7cdc0a7d157c20aad4525c
HP Precision architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.4.1-1.sarge3_hppa.deb
Size/MD5 checksum: 2004042 2bb61f214979d403de8e3eab35c4ef00
Motorola 680x0 architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.4.1-1.sarge3_m68k.deb
Size/MD5 checksum: 1810978 8da1cbf5b8291ff54194010881832bf1
Big endian MIPS architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.4.1-1.sarge3_mips.deb
Size/MD5 checksum: 2000618 dfcf0ab7c9f5b3aada55bc27c1f1119d
Little endian MIPS architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.4.1-1.sarge3_mipsel.deb
Size/MD5 checksum: 2007396 6d99bcd4559ef9a73d43cedd8b8d1680
PowerPC architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.4.1-1.sarge3_powerpc.deb
Size/MD5 checksum: 1957560 570ae516c68d6803aeafce048e0f978c
IBM S/390 architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.4.1-1.sarge3_s390.deb
Size/MD5 checksum: 1966774 2f4a27beba4ff1fc96ef11d9e77b7ec1
Sun Sparc architecture:
http://security.debian.org/pool/updates/main/g/gnupg/gnupg_1.4.1-1.sarge3_sparc.deb
Size/MD5 checksum: 1897162 8520ccf5a05546d18a641a480b5926ac
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
GNU
---
http://www.debian.org/security/2006/dsa-993
Gentoo
------
Gentoo已经为此发布了一个安全公告（GLSA-200603-08）以及相应补丁:
GLSA-200603-08：GnuPG: Incorrect signature verification
链接：http://security.gentoo.org/glsa/glsa-200603-08.xml
所有GnuPG用户都应升级到最新版本:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-crypt/gnupg-1.4.2.2"
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