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Vulnerability Details : CVE-2008-1552

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.
Publish Date : 2008-03-31 Last Update Date : 2018-10-11
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Execute CodeOverflow
CWE ID 189

- Vendor Statements

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:
Source: Redhat

- Products Affected By CVE-2008-1552

# Product Type Vendor Product Version Update Edition Language
1 Application Silc Silc Client * * * * Version Details Vulnerabilities
2 Application Silc Silc Server * * * * Version Details Vulnerabilities
3 Application Silc Silc Toolkit * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Silc Silc Client 1
Silc Silc Server 1
Silc Silc Toolkit 1

- References For CVE-2008-1552
VUPEN ADV-2008-0974
GENTOO GLSA-200804-27
SUSE SUSE-SR:2008:008
SECTRACK 1019690
BID 28373 SILC Client and Server Key Negotiation Protocol Remote Buffer Overflow Vulnerability Release Date:2008-07-30 CONFIRM CONFIRM CONFIRM
XF silc-silcpkcs1decode-bo(41474)
BUGTRAQ 20080325 CORE-2007-1212: SILC pkcs_decode buffer overflow

- Vulnerability Conditions

Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0

- Metasploit Modules Related To CVE-2008-1552

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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