libsilc: buffer overflow in PKCS#1 message decoding
Published Mar 31, 2008
6.8
MEDIUMCVSS 2.0
EPSS 4.11%
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
No data.
Configuration 1
- ≤ 1.1.3
- ≤ 1.1.2
- ≤ 1.1.6
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Red Hat statement
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: https://bugzilla.redhat.com/show_bug.cgi?id=440049
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.11% (0.04105) | 90.44th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.11% (0.04105) | 89.42th | v5 (v2026.06.15) |
| May 21, 2025 | 6.73% (0.06730) | 90.76th | v4 (v2025.03.14) |
| Mar 30, 2025 | 8.69% (0.08687) | 91.64th | v4 (v2025.03.14) |
| Mar 29, 2025 | 12.51% (0.12506) | 89.86th | v4 (v2025.03.14) |
| Mar 17, 2025 | 7.79% (0.07790) | 91.35th | v4 (v2025.03.14) |
| Feb 2, 2025 | 8.49% (0.08487) | 94.49th | v3 (v2023.03.01) |
| Dec 26, 2024 | 10.14% (0.10138) | 94.92th | v3 (v2023.03.01) |
| Dec 17, 2024 | 11.77% (0.11765) | 95.28th | v3 (v2023.03.01) |
| Dec 12, 2024 | 13.91% (0.13910) | 95.88th | v3 (v2023.03.01) |
| Sep 2, 2024 | 13.81% (0.13815) | 95.74th | v3 (v2023.03.01) |
| Mar 7, 2023 | 10.32% (0.10318) | 94.00th | v3 (v2023.03.01) |
| Mar 6, 2023 | 9.92% (0.09915) | 94.52th | v2 (v2022.01.01) |
| Apr 1, 2022 | 9.92% (0.09915) | 94.04th | v2 (v2022.01.01) |
| Feb 4, 2022 | 9.92% (0.09915) | 87.53th | v2 (v2022.01.01) |
References (23)
- http://lists.opensuse.org/opensuse-security-announce/2008-04/msg00005.html vendor-advisoryx_refsource_SUSE
- http://secunia.com/advisories/29463 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/29465 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/29622 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/29946 third-party-advisoryx_refsource_SECUNIA
- http://security.gentoo.org/glsa/glsa-200804-27.xml vendor-advisoryx_refsource_GENTOO
- http://securityreason.com/securityalert/3795 third-party-advisoryx_refsource_SREASON
- http://silcnet.org/general/news/?item=client_20080320_1 x_refsource_CONFIRMPatch
- http://silcnet.org/general/news/?item=server_20080320_1 x_refsource_CONFIRMPatch
- http://silcnet.org/general/news/?item=toolkit_20080320_1 x_refsource_CONFIRMPatch
- http://www.coresecurity.com/?action=item&id=2206 x_refsource_MISC
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:158 vendor-advisoryx_refsource_MANDRIVA
- http://www.securityfocus.com/archive/1/490069/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/28373 vdb-entryx_refsource_BIDPatch
- http://www.securitytracker.com/id?1019690 vdb-entryx_refsource_SECTRACK
- http://www.vupen.com/english/advisories/2008/0974/references vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2008-1552 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=440049 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/41474 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2008-1552
- https://www.cve.org/CVERecord?id=CVE-2008-1552
- https://www.redhat.com/archives/fedora-package-announce/2008-March/msg00513.html vendor-advisoryx_refsource_FEDORA
- https://www.redhat.com/archives/fedora-package-announce/2008-March/msg00538.html vendor-advisoryx_refsource_FEDORA
Change history (0)
No recorded changes yet.