Security readout for executives and security teams
Plain-English summary
CVE-2001-0381 describes a cryptanalytic weakness in the OpenPGP PGP standard. If an attacker can modify a user’s encrypted private key file and obtain one message signed afterward, they may recover the private signing key. That could allow forged signatures and long-term trust compromise.
Executive priority
Treat as important where PGP/OpenPGP signing protects software releases, legal attestations, payments, or sensitive communications. Business urgency is highest if private key files may be writable by attackers or stored on compromised systems.
Technical view
The reported issue is not tied to a named product in the provided data. It concerns the OpenPGP PGP standard and a private signature key disclosure attack involving alteration of an encrypted private key file followed by capture of a single signature from that key.
Likely exposure
Exposure depends on OpenPGP/PGP implementations and key-handling workflows. The provided sources do not identify specific affected products, versions, or configurations. Systems where attackers can tamper with encrypted private key files are the primary concern.
Exploitation context
The source description requires attacker ability to alter the encrypted private key file and then obtain a message signed with the same key. No provided source states active exploitation, and the CVE is not listed as KEV in the bundle.
Researcher notes
Evidence is sparse and historical. The bundle names the standard-level weakness but not affected implementations, fixed versions, CVSS, or CWE. Avoid assuming product impact without vendor confirmation. Focus analysis on private key file integrity and post-tamper signature exposure.
Mitigation direction
- Check current OpenPGP/PGP vendor guidance for CVE-2001-0381 or related key-protection advisories.
- Prevent unauthorized write access to encrypted private key files and keyrings.
- Use integrity-protected private key storage where supported by the implementation.
- Consider rotating keys if tampering with private key files is suspected.
- Review signing workflows for untrusted systems or shared storage exposure.
Validation and detection
- Inventory OpenPGP/PGP software and private key storage locations.
- Confirm private key files are not writable by untrusted users or processes.
- Review file integrity monitoring or backups for private key tampering.
- Check vendor documentation for historical fixes or format changes.
- Assess whether any signing occurred after suspected key-file modification.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2001-0381 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- openpgp-private-key-disclosure(6558)CVE reference · vdb-entry, x_refsource_XF
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.