CVE-2008-1552

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2008-03-31 · updated 2026-06-16
Weakness: CWE-189

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.

Affected products

Silc: all versions
Silc Client: through 1.1.3
Silc Server: through 1.1.2
Silc Toolkit: through 1.1.6

References

http://lists.opensuse.org/opensuse-security-announce/2008-04/msg00005.html
http://secunia.com/advisories/29463
http://secunia.com/advisories/29465
http://secunia.com/advisories/29622
http://secunia.com/advisories/29946
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

Get alerted when CVE-2008-1552 or the next vulnerability affects your stack