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Speedtouch USB driver: Privilege escalation vulnerability


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200411-04 / speedtouch
Release Date November 02, 2004
Latest Revision November 02, 2004: 01
Impact high
Exploitable local
Package Vulnerable versions Unaffected versions Architecture(s)
net-dialup/speedtouch < 1.3.1 >= 1.3.1 All supported architectures

Related bugreports: #68436


A vulnerability in the Speedtouch USB driver can be exploited to allow local users to execute arbitrary code with escalated privileges.

2.  Impact Information


The speedtouch package contains a driver for the ADSL SpeedTouch USB modem.


The Speedtouch USB driver contains multiple format string vulnerabilities in modem_run, pppoa2 and pppoa3. This flaw is due to an improperly made syslog() system call.


A malicious local user could exploit this vulnerability by causing a buffer overflow, and potentially allowing the execution of arbitrary code with escalated privileges.

3.  Resolution Information


There is no known workaround at this time.


All Speedtouch USB driver users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-dialup/speedtouch-1.3.1"

4.  References


Page updated November 02, 2004

Summary: This is a Gentoo Linux Security Advisory

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