838 : Apache HTTP Server Chunked Encoding Remote Overflow
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Info

Last Modified
9 months ago

Percent Complete
90%

Disclosure
Jun 19, 2002

Discovery
Unknown

Dates

Exploit
Unknown

Solution
Unknown

Keywords

 HPSBMA02149, SSRT050968

Description

 Apache Web Server contains a flaw that allows a remote attacker to execute arbitrary code. The issue is due to the mechanism that calculates the size of "chunked" encoding not properly interpreting the buffer size of data being transferred. By sending a specially crafted chunk of data, an attacker can possibly execute arbitrary code or crash the server.

Classification

 Location: Remote / Network Access
Attack Type: Input Manipulation
Impact: Loss of Integrity
Exploit: Exploit Public
Disclosure: OSVDB Verified
OSVDB: Web Related

Solution

 Upgrade to version 1.3.26, 2.0.39 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products
Apache Software Foundation
Watch-list
Web Server
Watch-list
 1.2.x
1.3.0
1.3.1
1.3.11
1.3.12
1.3.14
1.3.17
1.3.19
1.3.2
1.3.20
1.3.22
1.3.23
1.3.24
1.3.3
1.3.4
1.3.6
1.3.9
2.0.15
2.0.16
2.0.18
2.0.28
2.0.32
2.0.35
2.0.36

References

Tools & Filters
11030 12305 14778 14968 14969 14970
1495

Snort

 1807 1808 1809

Credit

Unknown or Incomplete

CVSSv2 Score

CVSSv2 Base Score = 7.5
Source: nvd.nist.gov | Generated: 2003-12-31 | Disagree?

Access_vector_2 Access_complexity_2 Authentication_2 Confidentiality_impact_1 Integrity_impact_1 Availability_impact_1

Blogs

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