OpenSSL 0.9.6 and 0.9.7 does not properly track the number of characters in certain ASN.1…
Priority LOW 33Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
OpenSSL 0.9.6 and 0.9.7 does not properly track the number of characters in certain ASN.1 inputs, which allows remote attackers to cause a denial of service (crash) via an SSL client certificate that causes OpenSSL to read past the end of a buffer when the long form is used.
Why it matters now
EPSS 0.06922 94th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
Red Hat 1 advisory
- RHSA-2003:290 Released 2003-09-30 · Red Hat rating Moderatemod_ssl, openssl security update for Stronghold
- Red Hat Stronghold 4
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AS (Advanced Server) version 2.1 | Fixed | RHSA-2003:293 |
| Red Hat Enterprise Linux ES version 2.1 | Fixed | RHSA-2003:293 |
| Red Hat Enterprise Linux WS version 2.1 | Fixed | RHSA-2003:293 |
| Red Hat Linux 7.1 | Fixed | RHSA-2003:291 |
| Red Hat Linux 7.2 | Fixed | RHSA-2003:291 |
| Red Hat Linux 7.3 | Fixed | RHSA-2003:291 |
| Red Hat Linux 8.0 | Fixed | RHSA-2003:291 |
| Red Hat Linux 9 | Fixed | RHSA-2003:292 |
| Red Hat Linux Advanced Workstation 2.1 | Fixed | RHSA-2003:293 |
| Red Hat Stronghold 4 | Fixed | RHSA-2003:290 |
Timeline
- 2026-10-02 Threatist record created from CVE-2003-0544
- 2026-10-03 Alias added: GHSA-4352-7f73-983c
References
Patch 2
More Openssl vulnerabilities
- TI-2022-01915 The c_rehash script allows command injection CVSS 3.1CRITICAL 9.8
- TI-2021-02645 SM2 Decryption Buffer Overflow CVSS 3.1CRITICAL 9.8
- TI-2009-03392 The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft… CVSS 3.1CRITICAL 9.8
- TI-2022-01176 The c_rehash script allows command injection CVSS 3.1CRITICAL 9.8
- TI-2014-00154 The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly… KEVCVSS 3.1HIGH 7.5
- TI-2025-14107 Stack buffer overflow in CMS (Auth)EnvelopedData parsing CVSS 3.1HIGH 8.8
Sources
- CVE-2003-0544 · CVE Program
- CVE-2003-0544 · NVD
- FIRST EPSS
- GHSA-4352-7f73-983c · GitHub Advisory Database · CC BY 4.0
- CVE-2003-0544 · Red Hat security data · CC BY 4.0
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