CVE-2018-1000027
High
Description
The Squid Software Foundation Squid HTTP Caching Proxy version prior to version 4.0.23 contains a NULL Pointer Dereference vulnerability in HTTP Response X-Forwarded-For header processing that can result in Denial of Service to all clients of the proxy. This attack appear to be exploitable via Remote HTTP server responding with an X-Forwarded-For header to certain types of HTTP request. This vulnerability appears to have been fixed in 4.0.23 and later.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Squid
PublishedFeb 9, 2018
First seenFeb 9, 2018
How to fix
Update
- squid-cache squid4.0.23 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| squid-cache squid | v < 4.0.23 | 4.0.23 |
| debian debian_linux | 7.0, 8.0, 9.0 | — |
| canonical ubuntu_linux | 14.04, 16.04, 17.10 | — |
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