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Home - Vulnerability NotesPrint
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CERT-In Vulnerability Note CIVN-2003-0008
tsm format string vulnerability in AIX

Original Issue Date:September 22, 2003

Severity Rating: MEDIUM

Systems Affected

  • AIX 5.2
  • All versions of the bos.rte.security fileset on AIX 5.2 up to and including bos.rte.security.5.2.0.12.

Overview

tsm format string vulnerability. A remote or local attacker can gain root privileges by exploiting login, passwd and su command.

Impact

Any local or remote user can get the root privileges by exploiting login, su and passwd commands

Description

tsm command provides Terminal State Management. This command invokes the terminal state manager, which controls the ports used in the trusted path.

It also verifies the users accounts and identities. Commands like login, passwd and su utilize the services of tsm. A format string vulnerability allows a remote or a local user to gain root privileges by exploiting the login, su and passwd commands.

Workaround

This problem can be avoided by setting the pwdprompt attribute to a value in etc/security/login.cfg.

To set this attribute edit the login.cfg file and add pwdprompt to the default stanza.
default:
pwdprompt = "Password: "
or by using the following command:
chsec -f /etc/security/login.cfg -s default -a pwdprompt= "Password: "

Solution

This vulnerability can be fixed by downloading the following APAR.

APAR number for AIX 5.2: IY47764


http://techsupport.services.ibm.com/server/aix.fdc

Vendor Information

IBM SECURITY ADVISORY: Issued on September 15 09:25:56 CDT 2003

This security advisory can be obtained on the www.ibm.com website by subscribing to


https://techsupport.services.ibm.com/server/pseries.subscriptionSvcs

References

CAN-2003-0784

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0784

CVE Name
CAN-2003-0784

Disclaimer

The information provided herein is on "as is" basis, without warranty of any kind.

Contact Information

Email: info@cert-in.org.in
Phone: +91-11-2436857

Postal address

Indian Computer Emergency Response Team (CERT-In)
Ministry of Electronics and Information Technology
Government of India
Electronics Niketan
6, CGO Complex, Lodhi Road,
New Delhi - 110 003
India

 
Indian Computer Emergency Response Team - CERT-In, Ministry of Electronics and Information Technology, Government of India.
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