CVE-2020-14058
HIGHSquid 3.1-3.5.27 and 4.x < 4.12 and 5.x < 5.0.3 - Denial of Service via TLS Certificate Validation
Title source: llmDescription
An issue was discovered in Squid before 4.12 and 5.x before 5.0.3. Due to use of a potentially dangerous function, Squid and the default certificate validation helper are vulnerable to a Denial of Service when opening a TLS connection to an attacker-controlled server for HTTPS. This occurs because unrecognized error values are mapped to NULL, but later code expects that each error value is mapped to a valid error string.
References (5)
Core 5
Core References
Patch, Vendor Advisory x_refsource_misc
http://www.squid-cache.org/Versions/v5/changesets/squid-5-c6d1a4f6a2cbebceebc8a3fcd8f539ceb7b7f723.patch
Patch, Vendor Advisory x_refsource_misc
http://www.squid-cache.org/Versions/v4/changesets/squid-4-93f5fda134a2a010b84ffedbe833d670e63ba4be.patch
Vendor Advisory x_refsource_confirm
http://www.squid-cache.org/Advisories/SQUID-2020_6.txt
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3RG5FGSTCAYVIJPJHIY3MRZ7NFT6HDO7/
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20210312-0001/
Scores
CVSS v3
7.5
EPSS
0.0054
EPSS Percentile
68.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
Status
published
Products (3)
fedoraproject/fedora
31
netapp/cloud_manager
squid-cache/squid
3.1 - 3.5.28
Published
Jun 30, 2020
Tracked Since
Feb 18, 2026