低危 linux-pam 信息泄露漏洞

CVE编号

CVE-2010-3431

利用情况

暂无

补丁情况

官方补丁

披露时间

2011-01-25

漏洞描述

The privilege-dropping implementation in the (1) pam_env and (2) pam_mail modules in Linux-PAM (aka pam) 1.1.2 does not check the return value of the setfsuid system call, which might allow local users to obtain sensitive information by leveraging an unintended uid, as demonstrated by a symlink attack on the .pam_environment file in a user's home directory. NOTE: this vulnerability exists because of an incomplete fix for CVE-2010-3435.

解决建议

建议您更新当前系统或软件至最新版，完成漏洞的修复。

参考链接
http://git.altlinux.org/people/ldv/packages/?p=pam.git%3Ba=commit%3Bh=843807a...
http://openwall.com/lists/oss-security/2010/09/21/10
http://openwall.com/lists/oss-security/2010/09/21/3
http://openwall.com/lists/oss-security/2010/09/21/8
http://openwall.com/lists/oss-security/2010/09/21/9
http://openwall.com/lists/oss-security/2010/09/27/10
http://openwall.com/lists/oss-security/2010/09/27/4
http://openwall.com/lists/oss-security/2010/09/27/5
http://openwall.com/lists/oss-security/2010/09/27/7
http://openwall.com/lists/oss-security/2010/10/03/1
http://openwall.com/lists/oss-security/2010/10/25/2
http://secunia.com/advisories/49711
http://security.gentoo.org/glsa/glsa-201206-31.xml
http://www.openwall.com/lists/oss-security/2010/09/21/11
http://www.openwall.com/lists/oss-security/2010/09/24/2
https://bugzilla.redhat.com/show_bug.cgi?id=641361

受影响软件情况

#	类型	厂商	产品	版本	影响面
1
	运行在以下环境
	应用	linux-pam	linux-pam	1.1.2	-
	运行在以下环境
	系统	debian_10	pam	*		Up to (excluding) 1.1.3-1
	运行在以下环境
	系统	debian_11	pam	*		Up to (excluding) 1.1.3-1
	运行在以下环境
	系统	debian_12	pam	*		Up to (excluding) 1.1.3-1
	运行在以下环境
	系统	debian_sid	pam	*		Up to (excluding) 1.1.3-1
	运行在以下环境
	系统	suse_12	pam	*		Up to (excluding) 1.1.8-11

阿里云评分 1.9

• 攻击路径 本地
• 攻击复杂度 困难
• 权限要求 普通权限
• 影响范围 有限影响
• EXP成熟度 未验证
• 补丁情况 官方补丁
• 数据保密性 无影响
• 数据完整性 N/A
• 服务器危害 无影响
• 全网数量 N/A

CWE-ID	漏洞类型
NVD-CWE-Other

Exp相关链接

- avd.aliyun.com