CVE-2004-0751
Description
The char_buffer_read function in the mod_ssl module for Apache 2.x, when using reverse proxying to an SSL server, allows remote attackers to cause a denial of service (segmentation fault).
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
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Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
Apache mod_ssl 2.0.x - Remote Denial of Service
source: https://www.securityfocus.com/bid/11154/info
Apache 2.x mod_ssl is reported prone to a remote denial of service vulnerability. This issue likely exists because the application fails to handle exceptional conditions. The vulnerability originates in the 'char_buffer_read' function of the 'ssl_engine_io.c' file.
It is likely that this issue only results in a denial of service condition in child process. This BID will be updated as more information becomes available.
Apache 2.0.50 is reported to be affected by this issue, however, it is possible that other versions are vulnerable as well.
With the following configuration in httpd.conf:
Listen 47290
SSLProxyEngine on
RewriteEngine on
RewriteRule /(.*) https://www.example.com/$1 [P]
The server may be crashed by issuing the following URI:
http://www.example.com:47290/eRoomASP/CookieTest.asp?facility=facility&URL=%2FeRoom%2FFacility%2FRoom%2F0_4242OS impact
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2.0.50-11 |
| sid | Fixed | 2.0.50-11 |
| forky | Fixed | 2.0.50-11 |
| bullseye | Fixed | 2.0.50-11 |
| bookworm | Fixed | 2.0.50-11 |
References
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.