medium
4.7
CWE
NVD-CWE-Other
Advisory Published
Updated

CVE-2010-3435

First published: Tue Sep 21 2010(Updated: )

It was reported that pam_env and pam_mail modules do not drop privileges before accessing users' files. This flaw can lead to information disclosure. Issue was partially addressed in Linux-PAM 1.1.2: <a href="http://git.altlinux.org/people/ldv/packages/?p=pam.git;a=commitdiff;h=06f882f30092a39a1db867c9744b2ca8d60e4ad6">http://git.altlinux.org/people/ldv/packages/?p=pam.git;a=commitdiff;h=06f882f30092a39a1db867c9744b2ca8d60e4ad6</a> The fix in 1.1.2 has some problems though, it fails to switch fsgid/egid and groups (<a href="https://access.redhat.com/security/cve/CVE-2010-3430">CVE-2010-3430</a>) and does not check setfsuid() return value (<a href="https://access.redhat.com/security/cve/CVE-2010-3431">CVE-2010-3431</a>): <a href="http://thread.gmane.org/gmane.comp.security.oss.general/3311/focus=3551">http://thread.gmane.org/gmane.comp.security.oss.general/3311/focus=3551</a> Fix using newly-introduced pam_modutil_drop_priv / pam_modutil_regain_priv was committed in upstream CVS and should be included in 1.1.3: <a href="http://git.altlinux.org/people/ldv/packages/?p=pam.git;a=commitdiff;h=843807a3a90f52e7538be756616510730a24739a">http://git.altlinux.org/people/ldv/packages/?p=pam.git;a=commitdiff;h=843807a3a90f52e7538be756616510730a24739a</a> Acknowledgements: Red Hat would like to thank Sebastian Krahmer of the SuSE Security Team for reporting this issue.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
redhat/pam<0:0.99.6.2-6.el5_5.2
0:0.99.6.2-6.el5_5.2
redhat/pam<0:1.1.1-4.el6_0.1
0:1.1.1-4.el6_0.1
Linux-PAM=0.99.1.0
Linux-PAM=0.99.2.0
Linux-PAM=0.99.2.1
Linux-PAM=0.99.3.0
Linux-PAM=0.99.4.0
Linux-PAM=0.99.5.0
Linux-PAM=0.99.6.0
Linux-PAM=0.99.6.1
Linux-PAM=0.99.6.2
Linux-PAM=0.99.6.3
Linux-PAM=0.99.7.0
Linux-PAM=0.99.7.1
Linux-PAM=0.99.8.0
Linux-PAM=0.99.8.1
Linux-PAM=0.99.9.0
Linux-PAM=0.99.10.0
Linux-PAM=1.0.0
Linux-PAM=1.0.1
Linux-PAM=1.0.2
Linux-PAM=1.0.3
Linux-PAM=1.0.4
Linux-PAM=1.1.0
Linux-PAM<=1.1.1

Remedy

http://openwall.com/lists/oss-security/2010/09/21/3

Remedy

http://openwall.com/lists/oss-security/2010/09/27/4

Remedy

http://openwall.com/lists/oss-security/2010/09/27/5

Remedy

http://openwall.com/lists/oss-security/2010/09/27/7

Remedy

http://openwall.com/lists/oss-security/2010/10/25/2

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=641335

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