Off-by-one buffer overflow in the ssl_compat_directive function, as called by the…
Priority LOW 36CWE-193Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-193 and the CVSS impact.
Summary
Off-by-one buffer overflow in the ssl_compat_directive function, as called by the rewrite_command hook for mod_ssl Apache module 2.8.9 and earlier, allows local users to execute arbitrary code as the Apache server user via .htaccess files with long entries.
Why it matters now
EPSS 0.01138 66th percentileScored 2026-11-07
Fix Fixed Red Hat: 6 advisories
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 6 advisories
- RHSA-2003:106 Released 2003-04-22 · Red Hat rating Important: : : Updated apache and mod_ssl packages available
- Red Hat Linux 7.1
- RHSA-2002:146 Released 2002-08-01 · Red Hat rating Moderatemod_ssl security update for Stronghold
- Stronghold 4 for Red Hat Enterprise Linux
- RHSA-2002:164 Released 2002-07-31 · Red Hat rating Criticalopenssl, mm, mod_ssl security update for Stronghold
- Red Hat Stronghold 3
Show 3 more Red Hat advisories
- RHSA-2002:135 Released 2002-07-24 · Red Hat rating Moderate: : : Updated secureweb packages available
- Red Hat Secure Web Server 3.2
- RHSA-2002:136 Released 2002-07-16 · Red Hat rating Moderatemod_ssl security update
- Red Hat Enterprise Linux AS (Advanced Server) version 2.1
- RHSA-2002:134 Released 2002-07-16 · Red Hat rating Moderate: Updated mod_ssl packages available
- Red Hat Linux 7.0
- Red Hat Linux 7.1
- Red Hat Linux 7.2
- Red Hat Linux 7.3
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-2002:136 |
| Red Hat Linux 7.0 | Fixed | RHSA-2002:134 |
| Red Hat Linux 7.1 | Fixed | RHSA-2002:134 |
| Red Hat Linux 7.2 | Fixed | RHSA-2002:134 |
| Red Hat Linux 7.3 | Fixed | RHSA-2002:134 |
| Red Hat Secure Web Server 3.2 | Fixed | RHSA-2002:135 |
| Red Hat Stronghold 3 | Fixed | RHSA-2002:164 |
| Stronghold 4 for Red Hat Enterprise Linux | Fixed | RHSA-2002:146 |
Timeline
- 2026-10-02 Threatist record created from CVE-2002-0653
- 2026-10-03 Alias added: GHSA-chfp-36fq-v6g3
References
Patch 1
Advisory 11
Sources
- CVE-2002-0653 · CVE Program
- CVE-2002-0653 · NVD
- FIRST EPSS
- GHSA-chfp-36fq-v6g3 · GitHub Advisory Database · CC BY 4.0
- CVE-2002-0653 · Red Hat security data · CC BY 4.0
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