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Fencer Vulns
high 7.8

CVE-2002-0653 json

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…

published 2002-07-11 24 y ago modified 2026-06-16 4 mo ago also EUVD-2002-0647

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
1
Exploit-DB

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.

Patch / fix

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2002-0653 updated

security flaw

  • Red Hat Linux 7.0 Red Hat Linux 7.1 Red Hat Linux 7.2 Red Hat Linux 7.3
    fixed: vendor fix RHSA-2002:134
  • Red Hat Secure Web Server 3.2
    fixed: vendor fix RHSA-2002:135
  • Red Hat Stronghold 3
    fixed: vendor fix RHSA-2002:164
  • Red Hat Stronghold 4 for Red Hat Enterprise Linux
    fixed: vendor fix RHSA-2002:146

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (EDB-21575)
  2. Published

Exploit prediction

1.14% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-21575 Apache mod_ssl 2.8.x - Off-by-One HTAccess Buffer Overflow dos, 2002-06-22

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.