Buffer overflow in LISa allows local users to gain access to a raw socket via a long LOGNAME environment variable for the resLISa daemon.

iDEFENSE reports a security vulnerability in the klisa package, that provides a LAN information service similar to 'Network Neighbourhood', which was discovered by Texonet. It is possible for a local attacker to exploit a buffer overflow condition in resLISa, a restricted version of KLISa. The vulnerability exists in the parsing of the LOGNAME environment variable, an overly long value will overwrite the instruction pointer thereby allowing an attacker to seize control of the executable.

The SuSE security team discovered two vulnerabilities in the KDE lanbrowsing service during an audit. The LISa network daemon and 'reslisa', a restricted version of LISa are used to identify servers on the local network by using the URL type 'lan://' and 'rlan://' respectively. A buffer overflow was discovered in the lisa daemon that can be exploited by an attacker on the local network to obtain root privilege on a machine running the lisa daemon. Another buffer overflow was found in the lan:// URL handler, which can be exploited by a remote attacker to gain access to the victim user's account.

Only Mandrake Linux 9.0 comes with the LISa network daemon; all previous versions do not contain the network daemon and are as such not vulnerable.

A number of vulnerabilities have been found that affect various versions of KDE. This errata provides updates for these issues.

KDE is a graphical desktop environment for workstations. A number of vulnerabilities have been found in various versions of KDE.

The SSL capability for Konqueror in KDE 3.0.2 and earlier does not verify the Basic Constraints for an intermediate CA-signed certificate, which allows remote attackers to spoof the certificates of trusted sites via a man-in-the-middle attack. The Common Vulnerabilities and Exposures project has assigned the name CVE-2002-0970 to this issue.

The cross-site scripting protection for Konqueror in KDE 2.2.2 and 3.0 through 3.0.3 does not properly initialize the domains on sub-frames and sub-iframes, which can allow remote attackers to execute scripts and steal cookies from subframes that are in other domains.
(CVE-2002-1151)

Multiple buffer overflows exist in the KDE LAN browsing implementation; the reslisa daemon contains a buffer overflow vulnerability which could be exploited if the reslisa binary is SUID root. Additionally, the lisa daemon contains a vulnerability which potentially enables any local user, as well any any remote attacker on the LAN who is able to gain control of the LISa port (7741 by default), to obtain root privileges. In Red Hat Linux reslisa is not SUID root and lisa services are not automatically started.
(CVE-2002-1247, CVE-2002-1306)

Red Hat Linux Advanced Server 2.1 provides KDE version 2.2.2 and is therefore vulnerable to these issues. This errata provides new kdelibs and kdenetworks packages which contain patches to correct these issues.

Please note that there is are two additional vulnerabilities that affect KDE 2.x which are not fixed by this errata. A vulnerability in the rlogin KIO subsystem (rlogin.protocol) of KDE 2.x 2.1 and later, and KDE 3.x 3.0.4 and earlier, allows local and remote attackers to execute arbitrary code via a carefully crafted URL. (CVE-2002-1281). A similar vulnerability affects the telnet KIO subsystem (telnet.protocol) of KDE 2.x 2.1 and later. (CVE-2002-1282)

At this time, Red Hat recommends disabling both the rlogin and telnet KIO protocols as a workaround. To disable both protocols, execute these commands while logged in as root :

rm /usr/share/services/rlogin.protocol rm /usr/share/services/telnet.protocol

ID	Name	Product	Family	Severity
15030	Debian DSA-193-1 : kdenetwork - buffer overflow	Nessus	Debian Local Security Checks	high
13978	Mandrake Linux Security Advisory : kdenetwork (MDKSA-2002:080)	Nessus	Mandriva Local Security Checks	high
12328	RHEL 2.1 : kdelibs (RHSA-2002:221)	Nessus	Red Hat Local Security Checks	high

Detections

Analytics

CVE-2002-1247

high

Tenable Plugins

high

high

high