Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title SILC: Multiple vulnerabilities
Informations
Name GLSA-200804-27 First vendor Publication 2008-04-24
Vendor Gentoo Last vendor Modification 2008-04-24
Severity (Vendor) Normal Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:C)
Cvss Base Score 7.8 Attack Range Network
Cvss Impact Score 6.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

Multiple vulnerabilities were found in SILC Client, Server, and Toolkit, allowing for Denial of Service and execution of arbitrary code.

Background

SILC (Secure Internet Live Conferencing protocol) Toolkit is a software development kit for use in clients, SILC Server is a communication server, and SILC Client is an IRSSI-based text client.

Description

* Nathan G. Grennan reported a boundary error in SILC Toolkit within the silc_fingerprint() function in the file lib/silcutil/silcutil.c when passing overly long data, resulting in a stack-based buffer overflow (CVE-2008-1227).

* A vulnerability has been reported in SILC Server which is caused due to an error in the handling of "NEW_CLIENT" packets that do not contain a nickname (CVE-2008-1429).

* Ariel Waissbein, Pedro Varangot, Martin Mizrahi, Oren Isacson,
Carlos Garcia, and Ivan Arce of Core Security Technologies reported that SILC Client, Server, and Toolkit contain a vulnerability in the silc_pkcs1_decode() function in the silccrypt library (silcpkcs1.c),
resulting in an integer underflow, signedness error, and a buffer overflow (CVE-2008-1552).

Impact

A remote attacker could exploit these vulnerabilities to cause a Denial of Service or execute arbitrary code with the privileges of the user running the application.

Workaround

There is no known workaround at this time.

Resolution

All SILC Toolkit users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-im/silc-toolkit-1.1.7"

All SILC Client users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-im/silc-client-1.1.4"

All SILC Server users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-im/silc-server-1.1.2"

References

[ 1 ] CVE-2008-1227 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1227
[ 2 ] CVE-2008-1429 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1429
[ 3 ] CVE-2008-1552 : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1552

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200804-27.xml

Original Source

Url : http://security.gentoo.org/glsa/glsa-200804-27.xml

CWE : Common Weakness Enumeration

% Id Name
50 % CWE-189 Numeric Errors (CWE/SANS Top 25)
50 % CWE-119 Failure to Constrain Operations within the Bounds of a Memory Buffer

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Application 5
Application 1

OpenVAS Exploits

Date Description
2009-04-09 Name : Mandriva Update for silc-toolkit MDVSA-2008:158 (silc-toolkit)
File : nvt/gb_mandriva_MDVSA_2008_158.nasl
2009-02-16 Name : Fedora Update for libsilc FEDORA-2008-2616
File : nvt/gb_fedora_2008_2616_libsilc_fc7.nasl
2009-02-16 Name : Fedora Update for libsilc FEDORA-2008-2641
File : nvt/gb_fedora_2008_2641_libsilc_fc8.nasl
2008-09-24 Name : Gentoo Security Advisory GLSA 200804-27 (silc-toolkit silc-client silc-server)
File : nvt/glsa_200804_27.nasl
2008-09-04 Name : FreeBSD Ports: silc-irssi-client, silc-client
File : nvt/freebsd_silc-irssi-client.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
43762 SILC Multiple Products lib/silccrypt/silcpkcs1.c silc_pkcs1_decode Function ...
43741 SILC Server NEW_CLIENT Packet Handling Remote DoS
42738 SILC Toolkit lib/silcutil/silcutil.c silc_fingerprint() Function Remote Overflow

Nessus® Vulnerability Scanner

Date Description
2009-04-23 Name : The remote Mandriva Linux host is missing one or more security updates.
File : mandriva_MDVSA-2008-158.nasl - Type : ACT_GATHER_INFO
2008-04-28 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-200804-27.nasl - Type : ACT_GATHER_INFO
2008-03-28 Name : The remote FreeBSD host is missing one or more security-related updates.
File : freebsd_pkg_ff304c35fb5b11dc91c100e0815b8da8.nasl - Type : ACT_GATHER_INFO
2008-03-26 Name : The remote Fedora host is missing a security update.
File : fedora_2008-2616.nasl - Type : ACT_GATHER_INFO
2008-03-26 Name : The remote Fedora host is missing a security update.
File : fedora_2008-2641.nasl - Type : ACT_GATHER_INFO
2008-03-13 Name : The remote openSUSE host is missing a security update.
File : suse_silc-toolkit-5094.nasl - Type : ACT_GATHER_INFO

Alert History

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Date Informations
2014-02-17 11:35:48
  • Multiple Updates