CVE-2018-1000027 — NULL Pointer Dereference in Squid
CWE-476 — NULL Pointer DereferenceCWE-117 — Improper Output Neutralization for Logs10 documents8 sources
Severity
7.5HIGHNVD
EPSS
66.0%
top 1.48%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedFeb 9
Latest updateMay 14
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6
Affected Packages2 packages
Also affects: Debian Linux 7.0, 8.0, 9.0, Ubuntu Linux 14.04, 16.04, 17.10
Patches
🔴Vulnerability Details
3GHSA▶
GHSA-hwhj-rr4w-2xmm: The Squid Software Foundation Squid HTTP Caching Proxy version prior to version 4↗2022-05-14
CVEList▶
CVE-2018-1000027: The Squid Software Foundation Squid HTTP Caching Proxy version prior to version 4↗2018-02-09
OSV▶
CVE-2018-1000027: The Squid Software Foundation Squid HTTP Caching Proxy version prior to version 4↗2018-02-09