Vulnerability CVE-2008-1552
Published: 2008-03-31   Modified: 2012-02-12

Description:
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.

See advisories in our WLB2 database:
Topic
Author
Date
High
SILC pkcs_decode buffer overflow
Core Security Te...
04.04.2008

Type:

CWE-189

 (Numeric Errors)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
SILC -> SILC 
SILC -> Silc client 
SILC -> Silc server 
SILC -> Silc toolkit 

 References:
http://lists.opensuse.org/opensuse-security-announce/2008-04/msg00005.html
http://security.gentoo.org/glsa/glsa-200804-27.xml
http://securityreason.com/securityalert/3795
http://silcnet.org/general/news/?item=client_20080320_1
http://silcnet.org/general/news/?item=server_20080320_1
http://silcnet.org/general/news/?item=toolkit_20080320_1
http://www.coresecurity.com/?action=item&id=2206
http://www.mandriva.com/security/advisories?name=MDVSA-2008:158
http://www.securityfocus.com/archive/1/490069/100/0/threaded
http://www.securityfocus.com/bid/28373
http://www.securitytracker.com/id?1019690
http://www.vupen.com/english/advisories/2008/0974/references
https://exchange.xforce.ibmcloud.com/vulnerabilities/41474
https://www.redhat.com/archives/fedora-package-announce/2008-March/msg00513.html
https://www.redhat.com/archives/fedora-package-announce/2008-March/msg00538.html
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