Very Low
CVE-2018-19131
CVE ID
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Very Low
(1 user assessed)
Very Low
(1 user assessed)Unknown
Unknown
Unknown
CVE-2018-19131
MITRE ATT&CK
Collection
Command and Control
Credential Access
Defense Evasion
Discovery
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Topic Tags
Description
Squid before 4.4 has XSS via a crafted X.509 certificate during HTTP(S) error page generation for certificate errors.
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Ratings
-
Attacker ValueVery Low
-
ExploitabilityVery Low
Technical Analysis
Bottom line: The commonName property of the certificate that signs the “failed to connect securely” error page within Squid gets rendered as HTML on the client/victim side.
In order to successfully exploit this XSS one would need to write a malicious .pem file in the location specified by squid.conf or modify squid.conf to point to an existing malicious .pem file.
If I had root level access to the filesystem on a squid box, serving a XSS from the error page would not be as useful as any number of other things that could be done. Similarly story if you MITM the victim.
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General Information
Vendors
- squid-cache
Products
- squid
References
Additional Info
Technical Analysis
Report as Emergent Threat Response
Report as Exploited in the Wild
CVE ID
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