7.8

CVE-2002-0653: modssl mod_ssl Off-by-one Error

Modified
AliasesDSA-135
Published 02-04-2003Last modified 08-08-2024
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Vulnerability summary

CVE-2002-0653 is a high (CVSS 7.8) Off-by-one Error vulnerability in modssl mod_ssl. EPSS estimates a 1.14% chance of exploitation in the next 30 days, higher than 66.6% of scored vulnerabilities. 1 public exploit is recorded.

Priority
Prioritisepublic exploit

Public exploit (exploit-database, 22-06-2002)

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
1.14%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits1exploit-database

Timeline

  1. 02-04-2003
    PublishedVulnerability first disclosed.
  2. 08-08-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.14%

Chance of exploitation in the next 30 days

Percentile

67%

Versus all other CVEs

30-day change

Increase +0.04 pp

From 1.10% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

1 found
  • exploit-databasedosmultipleVerified

    Apache mod_ssl 2.8.x - Off-by-One HTAccess Buffer Overflow

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Debian1 product
  • libapache-mod-ssl< 2.8.9-2
Modssl1 product

2 vendors · 2 products

References

17 links
Show all 17 references