Description
Multiple format string vulnerabilities in lib/silcclient/client_entry.c in Secure Internet Live Conferencing (SILC) Toolkit before 1.1.10, and SILC Client before 1.1.8, allow remote attackers to execute arbitrary code via format string specifiers in a nickname field, related to the (1) silc_client_add_client, (2) silc_client_update_client, and (3) silc_client_nickname_format functions.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 5.0 | silc-client | 1.1.4-1+lenny1 | DSA-1879-1 |
| Debian 5.0 | silc-toolkit | 1.1.7-2+lenny1 | DSA-1879-1 |
Advisories 1
- DSA-1879-1 silc-client silc-toolkit - arbitrary code execution Debian Security (DSA / DLA) · Mar 9, 2026
References
- ADV-2009-2150 vdb-entry
- [oss-security] 20090831 CVE id request: silc-toolkit mailing-list
- 36134 third-party-advisory
- http://silcnet.org/general/news/news_client.php
- http://silcnet.org/docs/changelog/SILC%20Toolkit%201.1.10
- 36614 third-party-advisory
- http://silcnet.org/docs/release/SILC%20Client%201.1.8
- MDVSA-2009:235 vendor-advisory
- [oss-security] 20090903 Re: CVE id request: silc-toolkit mailing-list
- DSA-1879 vendor-advisory
- http://silcnet.org/general/news/news_toolkit.php
- SUSE-SR:2009:016 vendor-advisory
- 35940 vdb-entry
- http://silcnet.org/docs/changelog/SILC%20Client%201.1.8
- MDVSA-2009:234 vendor-advisory