CVE-2020-14058
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.
| Software | From | Fixed in |
|---|---|---|
| squid-cache / squid | 4.0 | 4.12 |
| squid-cache / squid | 3.1 | 3.5.28.x |
| squid-cache / squid | 5.0 | 5.0.3 |
| fedoraproject / fedora | 31 | 31.x |
- http://www.squid-cache.org/Advisories/SQUID-2020_6.txt
- http://www.squid-cache.org/Versions/v4/changesets/squid-4-93f5fda134a2a010b84ffedbe833d670e63ba4be.patch
- http://www.squid-cache.org/Versions/v5/changesets/squid-5-c6d1a4f6a2cbebceebc8a3fcd8f539ceb7b7f723.patch
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3RG5FGSTCAYVIJPJHIY3MRZ7NFT6HDO7/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3RG5FGSTCAYVIJPJHIY3MRZ7NFT6HDO7/
- https://security.netapp.com/advisory/ntap-20210312-0001/
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