6.4

CVE-2004-0493: apache http_server

Modified
AliasesDEBIAN-CVE-2004-0493
Published 30-06-2004Last modified 08-08-2024

Vulnerability summary

CVE-2004-0493 is a medium (CVSS 6.4) vulnerability in apache http_server. EPSS estimates a 84.78% chance of exploitation in the next 30 days, higher than 99.7% of scored vulnerabilities. 3 public exploits are recorded.

Priority
Routine

Not severe (CVSS 6.4, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
6.4/10
010
Medium · v2.0 (NVD)
EPSS score
84.78%
0%100%
Critical · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits3reference, exploit-database

Advisory lineage

Upstream 0 · Downstream 1
RHSA-2004:342

Timeline

  1. 30-06-2004
    PublishedVulnerability first disclosed.
  2. 08-08-2024
    Last modifiedVulnerability information updated.

Description

The ap_get_mime_headers_core function in Apache httpd 2.0.49 allows remote attackers to cause a denial of service (memory exhaustion), and possibly an integer signedness error leading to a heap-based buffer overflow on 64 bit systems, via long header lines with large numbers of space or tab characters.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

84.78%

Chance of exploitation in the next 30 days

Percentile

100%

Versus all other CVEs

30-day change

No change 0.00 pp

From 84.78% 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

3 found
  • referenceUnverified

    Exploit Reference (securityfocus.com)

    Maturity: unknown

  • exploit-databasedoslinuxVerified

    Apache - Arbitrary Long HTTP Headers Denial of Service

    Maturity: poc

  • exploit-databasedosmultipleVerified

    Apache - Arbitrary Long HTTP Headers (Denial of Service)

    Maturity: poc

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.

Avaya4 products
Apache1 product
Debian1 product
  • apache2< 2.0.50-1
Gentoo1 product
Ibm1 product
  • http_server2.0.42 | 2.0.42.1 | 2.0.42.2 | 2.0.47 | 2.0.47.1
Trustix1 product

6 vendors · 9 products

References

25 links
Show all 25 references