Appweb Web Server 4.6.6, 5.2.1 remote DoS

2015.03.28
Credit: Matthew Daley
Risk: Medium
Local: No
Remote: Yes
CVE: CVE-2014-9708
CWE: CWE-Other


CVSS Base Score: 5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: None
Integrity impact: None
Availability impact: Partial

Affected software: Appweb Web Server CVE ID: CVE-2014-9708 Description: An HTTP request with a Range header of the form "Range: x=," (ie. with an empty range value) will cause a null pointer dereference, leading to a remotely-triggerable DoS. Fixed versions: 4.6.6, 5.2.1 Bug entry: https://github.com/embedthis/appweb/issues/413 Fix: https://github.com/embedthis/appweb/commit/7e6a925f5e86a19a7934a94bbd6959101d0b84eb#diff-7ca4d62c70220e0e226e7beac90c95d9L17348 Reported by: Matthew Daley - Matthew Daley

References:

https://github.com/embedthis/appweb/commit/7e6a925f5e86a19a7934a94bbd6959101d0b84eb#diff-7ca4d62c70220e0e226e7beac90c95d9L17348


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