Secunia

Some vulnerabilities have been reported in NetBSD, which can be exploited by malicious, local users to gain escalated privileges, or by malicious users to cause a DoS (Denial of Service) and compromise a vulnerable system, or by malicious people to bypass certain security restrictions and compromise a user's system.

1) Some boundary errors exist in the telnet client. This can be exploited by malicious people to compromise a user's system.

For more information:
SA14745

2) Multiple vulnerabilities exist in CVS. These can be exploited by malicious users to cause a DoS (Denial of Service) and compromise a vulnerable system, or by malicious, local users to perform certain actions on a vulnerable system with escalated privileges.

For more information:
SA11641
SA11817
SA16553
SA14976

3) An integer overflow error in the FreeBSD compatibility code can lead to heap corruption. This may be exploited by local users to cause a DoS and potentially to execute arbitrary code with root privileges.

4) Temporary files are being created insecurely in the "/tmp" directory by "imake" when generating pre-formatted manual pages. This can be exploited via symlink attacks to create or overwrite arbitrary files with the privileges of the user running the affected script.

5) A vulnerability exists in OpenSSL, which potentially can be exploited by malicious people to bypass certain security restrictions.

For more information:
SA17151

6) A security issue exists in ntpd, which can cause ntpd to run with incorrect group permissions.

For more information:
SA16602

7) An error exists the "ptrace()" function when checking for process privileges before attaching to a process. This can be exploited to attach to a suid process that calls "exec()". This potentially allows local privilege escalation by altering the behaviour of the process or by injecting additional syscalls.

Solution
The vulnerabilities have been fixed in the following versions:
Further details available in Customer Area

Provided and/or discovered by
3) Christer Oeberg
4) Jeremy C. Reed
7) Tavis Ormandy

Changelog
Further details available in Customer Area

Original Advisory
ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2005-004.txt.asc
ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2005-006.txt.asc
ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2005-008.txt.asc
ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2005-009.txt.asc
ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2005-010.txt.asc
ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2005-011.txt.asc
ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2005-013.txt.asc

Other references
Further details available in Customer Area

Deep Links
Links available in Customer Area