Unknown vulnerability in the (1) GIOP dissector, (2) WBXML, or (3) CAMEL dissector in Ethereal 0.8.20 through 0.10.11 allows remote attackers to cause a denial of service (application crash) via certain packets that cause a null pointer dereference.

Updated Ethereal packages that fix various security vulnerabilities are now available.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

The ethereal package is a program for monitoring network traffic.

A number of security flaws have been discovered in Ethereal. On a system where Ethereal is running, a remote attacker could send malicious packets to trigger these flaws and cause Ethereal to crash or potentially execute arbitrary code. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CVE-2005-2360, CVE-2005-2361, CVE-2005-2362, CVE-2005-2363, CVE-2005-2364, CVE-2005-2365, CVE-2005-2366, and CVE-2005-2367 to these issues.

Users of ethereal should upgrade to these updated packages, which contain version 0.10.12 which is not vulnerable to these issues.

Note: To reduce the risk of future vulnerabilities in Ethereal, the ethereal and tethereal programs in this update have been compiled as Position Independent Executables (PIE) for Red Hat Enterprise Linux 3 and 4. In addition FORTIFY_SOURCE has been enabled for Red Hat Enterprise Linux 4 packages to provide compile time and runtime buffer checks.

Several security problems have been discovered in ethereal, a commonly used network traffic analyser. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CAN-2005-2360     Memory allocation errors in the LDAP dissector can cause     a denial of service.

  - CAN-2005-2361

    Various errors in the AgentX, PER, DOCSIS, RADIUS,     Telnet, IS-IS, HTTP, DCERPC, DHCP and SCTP dissectors     can cause a denial of service.

  - CAN-2005-2363

    Various errors in the SMPP, 802.3, H1 and DHCP     dissectors can cause a denial of service.

  - CAN-2005-2364

    NULL pointer dereferences in the WBXML and GIOP     dissectors can cause a denial of service.

  - CAN-2005-2365

    A buffer overflow and NULL pointer dereferences in the     SMB dissector can cause a denial of service.

  - CAN-2005-2366

    Wrong address calculation in the BER dissector can cause     an infinite loop or abortion.

  - CAN-2005-2367

    Format string vulnerabilities in several dissectors     allow remote attackers to write to arbitrary memory     locations and thus gain privileges.

A number of vulnerabilities were discovered in versions of Ethereal prior to version 0.10.12, including :

The SMB dissector could overflow a buffer or exhaust memory (CVE-2005-2365).

iDefense discovered that several dissectors are vulnerable to format string overflows (CVE-2005-2367).

A number of other portential crash issues in various dissectors have also been corrected.

This update provides Ethereal 0.10.12 which is not vulnerable to these issues.

The remote host is affected by the vulnerability described in GLSA-200507-27 (Ethereal: Multiple vulnerabilities)

    There are numerous vulnerabilities in versions of Ethereal prior     to 0.10.12, including:
    The SMB dissector could overflow a     buffer or exhaust memory (CAN-2005-2365).
    iDEFENSE discovered     that several dissectors are vulnerable to format string overflows     (CAN-2005-2367).
    Additionally multiple potential crashes in     many dissectors have been fixed, see References for further     details.
  Impact :

    An attacker might be able to use these vulnerabilities to crash     Ethereal or execute arbitrary code with the permissions of the user     running Ethereal, which could be the root user.
  Workaround :

    There is no known workaround at this time.

ID	Name	Product	Family	Severity
21850	CentOS 3 / 4 : ethereal (CESA-2005:687)	Nessus	CentOS Local Security Checks	high
19961	Debian DSA-853-1 : ethereal - several vulnerabilities	Nessus	Debian Local Security Checks	high
19891	Mandrake Linux Security Advisory : ethereal (MDKSA-2005:131)	Nessus	Mandriva Local Security Checks	high
19424	RHEL 2.1 / 3 / 4 : ethereal (RHSA-2005:687)	Nessus	Red Hat Local Security Checks	high
19329	GLSA-200507-27 : Ethereal: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high

Detections

Analytics

CVE-2005-2364

high

Tenable Plugins

high

high

high

high

high