Medium: pam

Issue Overview:

Multiple directory traversal vulnerabilities in pam_timestamp.c in the pam_timestamp module for Linux-PAM (aka pam) 1.1.8 allow local users to create aribitrary files or possibly bypass authentication via a … (dot dot) in the (1) PAM_RUSER value to the get_ruser function or (2) PAM_TTY value to the check_tty funtion, which is used by the format_timestamp_name function.

The pam_userdb module for Pam uses a case-insensitive method to compare hashed passwords, which makes it easier for attackers to guess the password via a brute force attack.

Affected Packages:

pam

Issue Correction:
Run yum update pam to update your system.

New Packages:

i686:  
    pam-1.1.8-9.29.amzn1.i686  
    pam-devel-1.1.8-9.29.amzn1.i686  
    pam-debuginfo-1.1.8-9.29.amzn1.i686  
  
src:  
    pam-1.1.8-9.29.amzn1.src  
  
x86_64:  
    pam-1.1.8-9.29.amzn1.x86_64  
    pam-devel-1.1.8-9.29.amzn1.x86_64  
    pam-debuginfo-1.1.8-9.29.amzn1.x86_64  

Additional References

Red Hat: CVE-2013-7041, CVE-2014-2583

Mitre: CVE-2013-7041, CVE-2014-2583