Vulnerability Details : CVE-2018-1172
This vulnerability allows remote attackers to deny service on vulnerable installations of The Squid Software Foundation Squid 3.5.27-20180318. Authentication is not required to exploit this vulnerability. The specific flaw exists within ClientRequestContext::sslBumpAccessCheck(). A crafted request can trigger the dereference of a null pointer. An attacker can leverage this vulnerability to create a denial-of-service condition to users of the system. Was ZDI-CAN-6088.
Vulnerability category: Denial of service
Products affected by CVE-2018-1172
- cpe:2.3:a:squid-cache:squid:3.5.27:*:*:*:*:*:*:*
Threat overview for CVE-2018-1172
Top countries where our scanners detected CVE-2018-1172
Top open port discovered on systems with this issue
80
IPs affected by CVE-2018-1172 173,451
Threat actors abusing to this issue?
Yes
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affected by CVE-2018-1172!
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Exploit prediction scoring system (EPSS) score for CVE-2018-1172
0.73%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 80 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-1172
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
|
5.9
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.2
|
3.6
|
NIST |
CWE ids for CVE-2018-1172
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by:
- nvd@nist.gov (Primary)
- zdi-disclosures@trendmicro.com (Secondary)
References for CVE-2018-1172
-
http://www.squid-cache.org/Advisories/SQUID-2018_3.txt
Vendor Advisory
-
https://zerodayinitiative.com/advisories/ZDI-18-309
ZDI-18-309 | Zero Day InitiativeThird Party Advisory;VDB Entry
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