Multiple vulnerabilities in git.kernel linux-pam



| Updated: 2020-08-11
Risk High
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2010-4708
CVE-2010-4706
CVE-2010-4707
CVE-2010-3853
CWE-ID CWE-20
CWE-399
Exploitation vector Network
Public exploit N/A
Vulnerable software
 linux-pam
Other software / Other software solutions

Vendor git.kernel.org

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU45410

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2010-4708

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

The pam_env module in Linux-PAM (aka pam) 1.1.2 and earlier reads the .pam_environment file in a user's home directory, which might allow local users to run programs with an unintended environment by executing a program that relies on the pam_env PAM check.

Mitigation

Install update from vendor's website.

Vulnerable software versions

linux-pam: 0.99.1.0 - 1.1.1

CPE2.3 External links

https://openwall.com/lists/oss-security/2010/09/27/7
https://pam.cvs.sourceforge.net/viewvc/pam/Linux-PAM/modules/pam_env/pam_env.8.xml?r1=1.7&r2=1.8
https://pam.cvs.sourceforge.net/viewvc/pam/Linux-PAM/modules/pam_env/pam_env.c?r1=1.22&r2=1.23
https://secunia.com/advisories/49711
https://security.gentoo.org/glsa/glsa-201206-31.xml
https://www.securityfocus.com/bid/46046
https://bugzilla.redhat.com/show_bug.cgi?id=641335
https://exchange.xforce.ibmcloud.com/vulnerabilities/65037


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Input validation error

EUVDB-ID: #VU45411

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2010-4706

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The pam_sm_close_session function in pam_xauth.c in the pam_xauth module in Linux-PAM (aka pam) 1.1.2 and earlier does not properly handle a failure to determine a certain target uid, which might allow local users to delete unintended files by executing a program that relies on the pam_xauth PAM check.

Mitigation

Install update from vendor's website.

Vulnerable software versions

linux-pam: 0.99.1.0 - 1.1.1

CPE2.3 External links

https://git.altlinux.org/people/ldv/packages/?p=pam.git;a=commit;h=Linux-PAM-1_1_2-3-g05dafc06cd3dfeb7c4b24942e4e1ae33ff75a123
https://openwall.com/lists/oss-security/2010/10/03/1
https://secunia.com/advisories/49711
https://security.gentoo.org/glsa/glsa-201206-31.xml
https://www.securityfocus.com/bid/46045
https://exchange.xforce.ibmcloud.com/vulnerabilities/65035


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Resource management error

EUVDB-ID: #VU45412

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2010-4707

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

The check_acl function in pam_xauth.c in the pam_xauth module in Linux-PAM (aka pam) 1.1.2 and earlier does not verify that a certain ACL file is a regular file, which might allow local users to cause a denial of service (resource consumption) via a special file.

Mitigation

Install update from vendor's website.

Vulnerable software versions

linux-pam: 0.99.1.0 - 1.1.1

CPE2.3 External links

https://git.altlinux.org/people/ldv/packages/?p=pam.git;a=commit;h=Linux-PAM-1_1_2-2-gffe7058c70253d574b1963c7c93002bd410fddc9
https://openwall.com/lists/oss-security/2010/10/03/1
https://secunia.com/advisories/49711
https://security.gentoo.org/glsa/glsa-201206-31.xml
https://www.securityfocus.com/bid/46045
https://exchange.xforce.ibmcloud.com/vulnerabilities/65036


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Input validation error

EUVDB-ID: #VU45414

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2010-3853

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

pam_namespace.c in the pam_namespace module in Linux-PAM (aka pam) before 1.1.3 uses the environment of the invoking application or service during execution of the namespace.init script, which might allow local users to gain privileges by running a setuid program that relies on the pam_namespace PAM check, as demonstrated by the sudo program.

Mitigation

Install update from vendor's website.

Vulnerable software versions

linux-pam: 0.99.1.0 - 1.1.1

CPE2.3 External links

https://lists.vmware.com/pipermail/security-announce/2011/000126.html
https://pam.cvs.sourceforge.net/viewvc/pam/Linux-PAM/modules/pam_namespace/pam_namespace.c?view=log#rev1.13
https://secunia.com/advisories/49711
https://security.gentoo.org/glsa/glsa-201206-31.xml
https://www.mandriva.com/security/advisories?name=MDVSA-2010:220
https://www.redhat.com/support/errata/RHSA-2010-0819.html
https://www.redhat.com/support/errata/RHSA-2010-0891.html
https://www.securityfocus.com/archive/1/516909/100/0/threaded
https://www.vmware.com/security/advisories/VMSA-2011-0004.html
https://www.vupen.com/english/advisories/2011/0606
https://bugzilla.redhat.com/show_bug.cgi?id=643043


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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