Emacs Inadequate PTY Permissions Vulnerability

BID:2164

Info

Emacs Inadequate PTY Permissions Vulnerability

Bugtraq ID: 2164
Class: Access Validation Error
CVE:
Remote: No
Local: Yes
Published: Dec 31 2000 12:00AM
Updated: Dec 31 2000 12:00AM
Credit: This vulnerability was first announced in a Mandrake Security Advisory on December 31, 2000.
Vulnerable: GNU Emacs 20.6
- Debian Linux 2.2
- FreeBSD FreeBSD 4.2
+ Mandriva Linux Mandrake 7.0
+ Mandriva Linux Mandrake 6.1
+ Mandriva Linux Mandrake 6.0
+ Redhat Linux 6.2 i386
Not Vulnerable:

Discussion

Emacs Inadequate PTY Permissions Vulnerability

Emacs is a widely used, freely available text editor, maintained by the Free Software Foundation. A problem with emacs could allow local users access to sensitive information.

The problem occurs in the permission settings of the slave terminal. While running, emacs does not set adequately restrictive permissions on the slave terminals, making it possible for a user on the local system to monitor the slave terminals and emacs sessions of other users. It is also possible for a local user to forge responses to the emacs client. This issue makes it possible for a malicious user to access information being edited by other users of emacs, and create forged responses to the emacs client.

Exploit / POC

Emacs Inadequate PTY Permissions Vulnerability

Currently the SecurityFocus staff are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected].

Solution / Fix

Emacs Inadequate PTY Permissions Vulnerability

Solution:
Upgrades available:


GNU Emacs 20.6

References

Emacs Inadequate PTY Permissions Vulnerability

References:
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