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 Software | Affected Version | How 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 |
| SUSE PAM | <=1.1.1 | |
| SUSE PAM | =0.99.1.0 | |
| SUSE PAM | =0.99.2.0 | |
| SUSE PAM | =0.99.2.1 | |
| SUSE PAM | =0.99.3.0 | |
| SUSE PAM | =0.99.4.0 | |
| SUSE PAM | =0.99.5.0 | |
| SUSE PAM | =0.99.6.0 | |
| SUSE PAM | =0.99.6.1 | |
| SUSE PAM | =0.99.6.2 | |
| SUSE PAM | =0.99.6.3 | |
| SUSE PAM | =0.99.7.0 | |
| SUSE PAM | =0.99.7.1 | |
| SUSE PAM | =0.99.8.0 | |
| SUSE PAM | =0.99.8.1 | |
| SUSE PAM | =0.99.9.0 | |
| SUSE PAM | =0.99.10.0 | |
| SUSE PAM | =1.0.0 | |
| SUSE PAM | =1.0.1 | |
| SUSE PAM | =1.0.2 | |
| SUSE PAM | =1.0.3 | |
| SUSE PAM | =1.0.4 | |
| SUSE PAM | =1.1.0 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2010-3435 https://nvd.nist.gov/vuln/detail/CVE-2010-3435
- https://bugzilla.redhat.com/show_bug.cgi?id=641335
- https://access.redhat.com/errata/RHSA-2010:0819
- https://access.redhat.com/errata/RHSA-2010:0891
- https://access.redhat.com/security/cve/CVE-2010-3435
- http://git.altlinux.org/people/ldv/packages/?p=pam.git;a=commitdiff;h=06f882f30092a39a1db867c9744b2ca8d60e4ad6
- https://access.redhat.com/security/cve/CVE-2010-3430
- https://access.redhat.com/security/cve/CVE-2010-3431
- http://thread.gmane.org/gmane.comp.security.oss.general/3311/focus=3551
- http://git.altlinux.org/people/ldv/packages/?p=pam.git;a=commitdiff;h=843807a3a90f52e7538be756616510730a24739a
- http://thread.gmane.org/gmane.comp.security.oss.general/3311/focus=3562
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=641335#c3
- http://pam.cvs.sourceforge.net/viewvc/pam/Linux-PAM/modules/pam_env/pam_env.c?r1=1.22&r2=1.23
- http://pam.cvs.sourceforge.net/viewvc/pam/Linux-PAM/modules/pam_env/pam_env.8.xml?r1=1.7&r2=1.8
- https://rhn.redhat.com/errata/RHSA-2010-0819.html
- https://rhn.redhat.com/errata/RHSA-2010-0891.html
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=641335#c1
- http://7bits.nl/projects/pamenv-dsakeys/pamenv-dsakeys.html
- http://www.redhat.com/support/errata/RHSA-2010-0891.html
- http://www.redhat.com/support/errata/RHSA-2010-0819.html
- http://openwall.com/lists/oss-security/2010/09/21/3
- http://openwall.com/lists/oss-security/2010/09/27/7
- http://openwall.com/lists/oss-security/2010/10/25/2
- http://www.openwall.com/lists/oss-security/2010/09/24/2
- http://openwall.com/lists/oss-security/2010/09/27/8
- http://openwall.com/lists/oss-security/2010/09/27/10
- http://openwall.com/lists/oss-security/2010/09/27/5
- http://openwall.com/lists/oss-security/2010/09/27/4
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:220
- http://lists.vmware.com/pipermail/security-announce/2011/000126.html
- http://www.vmware.com/security/advisories/VMSA-2011-0004.html
- http://www.vupen.com/english/advisories/2011/0606
- http://security.gentoo.org/glsa/glsa-201206-31.xml
- http://secunia.com/advisories/49711
- http://www.securityfocus.com/archive/1/516909/100/0/threaded
- http://git.altlinux.org/people/ldv/packages/?p=pam.git%3Ba=commit%3Bh=06f882f30092a39a1db867c9744b2ca8d60e4ad6
Frequently Asked Questions
What is the severity of CVE-2010-3435?
CVE-2010-3435 has a moderate severity due to the potential for information disclosure.
How do I fix CVE-2010-3435?
To remediate CVE-2010-3435, upgrade to the patched version of the pam package that addresses this vulnerability.
What modules are affected by CVE-2010-3435?
The pam_env and pam_mail modules are affected by CVE-2010-3435, leading to privilege escalation risks.
Which versions of pam are vulnerable to CVE-2010-3435?
Versions of pam before 0:0.99.6.2-6.el5_5.2 and 0:1.1.1-4.el6_0.1 are vulnerable to CVE-2010-3435.
Is CVE-2010-3435 specific to any Linux distribution?
CVE-2010-3435 primarily affects Red Hat-based distributions due to vulnerabilities in the pam package.
- collector/redhat-cve
- collector/redhat-bugzilla
- alias/CVE-2010-3435
- agent/type
- agent/last-modified-date
- agent/remedy
- agent/first-publish-date
- agent/weakness
- agent/references
- agent/severity
- agent/author
- agent/description
- agent/event
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- collector/nvd-historical
- package-manager/redhat
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- canonical/suse pam
- version/suse pam/1.1.1
- version/suse pam/0.99.1.0
- version/suse pam/0.99.2.0
- version/suse pam/0.99.2.1
- version/suse pam/0.99.3.0
- version/suse pam/0.99.4.0
- version/suse pam/0.99.5.0
- version/suse pam/0.99.6.0
- version/suse pam/0.99.6.1
- version/suse pam/0.99.6.2
- version/suse pam/0.99.6.3
- version/suse pam/0.99.7.0
- version/suse pam/0.99.7.1
- version/suse pam/0.99.8.0
- version/suse pam/0.99.8.1
- version/suse pam/0.99.9.0
- version/suse pam/0.99.10.0
- version/suse pam/1.0.0
- version/suse pam/1.0.1
- version/suse pam/1.0.2
- version/suse pam/1.0.3
- version/suse pam/1.0.4
- version/suse pam/1.1.0