National Vulnerability Database

National Vulnerability Database

National Vulnerability

CVE-2008-1552 Detail


The silc_pkcs1_decode function in the silccrypt library (silcpkcs1.c) in Secure Internet Live Conferencing (SILC) Toolkit before 1.1.7, SILC Client before 1.1.4, and SILC Server before 1.1.2 allows remote attackers to execute arbitrary code via a crafted PKCS#1 message, which triggers an integer underflow, signedness error, and a buffer overflow. NOTE: the researcher describes this as an integer overflow, but CVE uses the "underflow" term in cases of wraparound from unsigned subtraction.

Source:  MITRE      Last Modified:  03/31/2008

Quick Info

CVE Dictionary Entry:
Original release date:
Last revised:


CVSS Severity (version 2.0):
CVSS v2 Base Score:
(AV:N/AC:M/Au:N/C:P/I:P/A:P) (legend)
Impact Subscore:
Exploitability Subscore:
CVSS Version 2 Metrics:
Access Vector:
Network exploitable - Victim must voluntarily interact with attack mechanism
Access Complexity:
Not required to exploit
Impact Type:
Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Red Hat (04/23/2008)

Red Hat does not consider this issue to be a security flaw as SILC is not used in a vulnerable manner in Red Hat Enterprise Linux 4 and 5. More information can be found here:

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name External Source SUSE SUSE-SR:2008:008 External Source GENTOO GLSA-200804-27 External Source SREASON 3795 Patch External Source CONFIRM Patch External Source CONFIRM Patch External Source CONFIRM External Source MISC External Source MANDRIVA MDVSA-2008:158 External Source BUGTRAQ 20080325 CORE-2007-1212: SILC pkcs_decode buffer overflow Patch External Source BID 28373 External Source SECTRACK 1019690 External Source VUPEN ADV-2008-0974 External Source XF silc-silcpkcs1decode-bo(41474) External Source FEDORA FEDORA-2008-2616 External Source FEDORA FEDORA-2008-2641

Technical Details

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