Yellow Dog Linux Security Announcement -------------------------------------- Package: ethereal Issue Date: Jul 18,2003 Priority: medium Advisory ID: YDU-20030718-2 1. Topic: Updated ethereal packages are available. 2. Problem: "Ethereal is a program for monitoring network traffic. A number of security issues affect Ethereal. By exploiting these issues it may be possible to make Ethereal crash or run arbitrary code by injecting a purposefully malformed packet onto the wire or by convincing someone to read a malformed packet trace file. Multiple off-by-one vulnerabilities exist in Ethereal 0.9.11 and earlier in the AIM, GIOP Gryphon, OSPF, PPTP, Quake, Quake2, Quake3, Rsync, SMB, SMPP, and TSP dissectors. They do not properly use the tvb_get_nstringz and tvb_get_nstringz0 functions. Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2003-0356 to these issues. Multiple integer overflow vulnerabilities exist in Ethereal 0.9.11 and earlier in the Mount and PPP dissectors. (CAN-2003-0357) A vulnerability in the DCERPC dissector exists in Ethereal 0.9.12 and earlier, allowing remote attackers to cause a denial of service (memory consumption) via a certain NDR string. (CAN-2003-0428) The OSI dissector in Ethereal 0.9.12 and earlier causes by invalid IPv4 or IPv6 prefix lengths, possibly triggering a buffer overflow. (CAN-2003-0429) The SPNEGO dissector in Ethereal 0.9.12 and earlier allows remote attackers to cause a denial of service (crash) via an invalid ASN.1 value. (CAN-2003-0430) The tvb_get_nstringz0 function in Ethereal 0.9.12 and earlier does not properly handle a zero-length buffer size. (CAN-2003-0431) Ethereal 0.9.12 and earlier does not handle certain strings properly in the BGP, WTP, DNS, 802.11, ISAKMP, WSP, CLNP, ISIS, and RMI dissectors. (CAN-2003-0432) Users of Ethereal should update to the erratum packages containing Ethereal version 1.9.13, which are not vulnerable to these issues." From Red Hat Advisory 3. Solution: a) Updating via yum... We suggest that you use the yum program to keep your system up-to-date. The following command(s) will retrieve and install the fixed version of this update onto your system: yum update ethereal b) Updating manually... Download the updates below and then run the following rpm command. (Please use a mirror site) rpm -Fvh [filenames] ftp://ftp.yellowdoglinux.com/pub/yellowdog/updates/yellowdog-3.0/ ppc/ethereal-0.9.13-1.90.1a.ppc.rpm ppc/ethereal-gnome-0.9.13-1.90.1a.ppc.rpm 4. Verification MD5 checksum Package -------------------------------- ---------------------------- a54f8f74064a4c62011f29678aed9f8b SRPMS/ethereal-0.9.13-1.90.1a.src.rpm b938786f10df1394d0019799b6a4e8b1 ethereal-0.9.13-1.90.1a.ppc.rpm 3a905c82e3127cf2359be3ca2555232f ethereal-gnome-0.9.13-1.90.1a.ppc.rpm If you wish to verify that each package has not been corrupted or tampered with, examine the md5sum with the following command: md5sum 5. Misc. Terra Soft has setup a moderated mailing list where these security, bugfix, and package enhancement announcements will be posted. See http://lists.terrasoftsolutions.com/ for more information. For information regarding the usage of yum, see: http://www.yellowdoglinux.com/support/solutions/ydl_general/yum.shtml