Vulnerability Details : CVE-2010-3431
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.
Exploit prediction scoring system (EPSS) score for CVE-2010-3431
Probability of exploitation activity in the next 30 days: 0.04%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 8 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2010-3431
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
---|---|---|---|---|---|
1.9
|
LOW | AV:L/AC:M/Au:N/C:P/I:N/A:N |
3.4
|
2.9
|
NIST |
References for CVE-2010-3431
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http://openwall.com/lists/oss-security/2010/10/25/2
oss-security - Re: Minor security flaw with pam_xauthPatch
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http://openwall.com/lists/oss-security/2010/09/21/8
oss-security - Re: Minor security flaw with pam_xauthPatch
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http://openwall.com/lists/oss-security/2010/09/21/10
oss-security - Re: Minor security flaw with pam_xauthPatch
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http://security.gentoo.org/glsa/glsa-201206-31.xml
Linux-PAM: Multiple vulnerabilities (GLSA 201206-31) — Gentoo security
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http://openwall.com/lists/oss-security/2010/09/27/4
oss-security - Re: Minor security flaw with pam_xauthPatch
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http://openwall.com/lists/oss-security/2010/09/27/10
oss-security - Re: Minor security flaw with pam_xauth
-
http://openwall.com/lists/oss-security/2010/09/21/9
oss-security - Re: Minor security flaw with pam_xauth
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http://openwall.com/lists/oss-security/2010/09/21/3
oss-security - Re: Minor security flaw with pam_xauthPatch
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http://openwall.com/lists/oss-security/2010/10/03/1
oss-security - Re: Minor security flaw with pam_xauthPatch
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http://www.openwall.com/lists/oss-security/2010/09/24/2
oss-security - Re: Minor security flaw with pam_xauth
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http://git.altlinux.org/people/ldv/packages/?p=pam.git%3Ba=commit%3Bh=843807a3a90f52e7538be756616510730a24739a
git.altlinux.org
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https://bugzilla.redhat.com/show_bug.cgi?id=641361
641361 – (CVE-2010-3430, CVE-2010-3431) CVE-2010-3430 CVE-2010-3431 pam: pam_mail and pam_env incorrect privilege droppingPatch
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http://openwall.com/lists/oss-security/2010/09/27/5
oss-security - Re: Minor security flaw with pam_xauth
-
http://www.openwall.com/lists/oss-security/2010/09/21/11
oss-security - Re: Minor security flaw with pam_xauthPatch
-
http://openwall.com/lists/oss-security/2010/09/27/7
oss-security - Re: Minor security flaw with pam_xauth
Products affected by CVE-2010-3431
- cpe:2.3:a:linux-pam:linux-pam:1.1.2:*:*:*:*:*:*:*