Title: Pam_SMB Remote Buffer Overflow Vulnerability
Severity: CRITICAL
Description:
pam_smb is a pluggable authentication module (PAM) that provides for authentication of UNIX users to a Server Message Block (SMB) server.
pam_smb has been reported prone to a buffer overflow vulnerability. It has been reported that systems using pam_smb to authenticate to a remotely accessible service may be vulnerable to a condition that may allow a remote attacker to supply and execute arbitrary code in the context of the vulnerable module.
Specifically, insufficient bounds checking is carried out on user-supplied passwords before being copied into internal memory space. As a result, an attacker may be capable of overwriting sensitive locations in memory.
It has been reported that all versions of pam_smb prior to, and including version 1.1.6 and 2.0.0-rc development versions are affected by this vulnerability.
Affected Products:
- Debian Linux 3.0.0
- Debian Linux 3.0.0 alpha
- Debian Linux 3.0.0 arm
- Debian Linux 3.0.0 hppa
- Debian Linux 3.0.0 ia-32
- Debian Linux 3.0.0 ia-64
- Debian Linux 3.0.0 m68k
- Debian Linux 3.0.0 mips
- Debian Linux 3.0.0 mipsel
- Debian Linux 3.0.0 ppc
- Debian Linux 3.0.0 s/390
- Debian Linux 3.0.0 sparc
- RedHat Advanced Workstation for the Itanium Processor 2.1.0
- RedHat Enterprise Linux AS 2.1
- RedHat Enterprise Linux AS 2.1 IA64
- RedHat Enterprise Linux ES 2.1
- RedHat Enterprise Linux WS 2.1
- RedHat Enterprise Linux WS 2.1 IA64
- RedHat Linux 7.2.0 i386
- RedHat Linux 7.2.0 ia64
- RedHat Linux 7.3.0 i386
- RedHat Linux 8.0.0 i386
- RedHat Linux 9.0.0 i386
- RedHat pam_smb-1.1.6-2.i386.rpm
- RedHat pam_smb-1.1.6-2.i386.rpm
- RedHat pam_smb-1.1.6-2.ia64.rpm
- RedHat pam_smb-1.1.6-5.i386.rpm
- RedHat pam_smb-1.1.6-7.i386.rpm
- SGI ProPack 2.2.1
- SGI ProPack 2.3.0
- Sun Linux 5.0.7
- pam_smb pam_smb 1.1.0
- pam_smb pam_smb 1.1.1
- pam_smb pam_smb 1.1.2
- pam_smb pam_smb 1.1.3
- pam_smb pam_smb 1.1.4
- pam_smb pam_smb 1.1.5
- pam_smb pam_smb 1.1.6
- pam_smb pam_smb 2.0.0 -rc4
References:
- Conectiva: CLSA-2003:733
- Red Hat: RHSA-2003-262 - Updated pam_smb packages fix remote buffer overflow.
- Sun: Sun Linux Support - Sun Linux Patches
- pam_smb: [Pam_smb] pam_smb Security Advisory - ALL versions as of 26-08-2003
- pam_smb: pam_smb Homepage
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