Pkcs11-provider: side-channel proofing pkcs#1 1.5 paths
Priority LOW 36CWE-1300Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-203.
Summary
A security vulnerability has been identified in the pkcs11-provider, which is associated with Public-Key Cryptography Standards (PKCS#11). If exploited successfully, this vulnerability could result in a Bleichenbacher-like security flaw, potentially enabling a side-channel attack on PKCS#1 1.5 decryption.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00565 47th percentileScored 2026-11-07
Fix Fixed pkcs11-provider: 0.2
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA pkcs11-provider Fixed in 0.2
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2023-6258
- 2026-10-03 Alias added: GHSA-phf3-25c6-93hv
References
Advisory 1
More Fedora vulnerabilities
- TI-2018-01029 Command injection in Red Hat dhcp CVSS 3.0HIGH 7.5
- TI-2024-01796 Improper input validation in Fedora dnf5daemon-server CVSS 3.1HIGH 8.4
- TI-2023-05737 Glibc: heap-based buffer overflow in __vsyslog_internal() CVSS 3.1HIGH 8.4
- TI-2023-03845 Heap out of bound read in builtin.c CVSS 3.1HIGH 7.1
- TI-2023-04922 Draw while calling getdrawinfo() CVSS 3.1MEDIUM 5.3
- TI-2023-03123 Crash due to a null pointer dereference in the dn_nsp_send function CVSS 3.1MEDIUM 6.5
Sources
- CVE-2023-6258 · CVE Program
- CVE-2023-6258 · NVD
- FIRST EPSS
- GHSA-phf3-25c6-93hv · GitHub Advisory Database · CC BY 4.0
- CVE-2023-6258 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences