CVE-2020-14058
First published: Tue Jun 30 2020(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Squid-Cache Squid | >=3.1<=3.5.28 | |
| Squid-Cache Squid | >=4.0<4.12 | |
| Squid-Cache Squid | >=5.0<5.0.3 | |
| Fedoraproject Fedora | =31 | |
| NetApp Cloud Manager |
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Reference Links
- 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://security.netapp.com/advisory/ntap-20210312-0001/
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2020-14058.
What is the severity of CVE-2020-14058?
The severity of CVE-2020-14058 is high with a severity value of 7.5.
Which software versions are affected by CVE-2020-14058?
CVE-2020-14058 affects Squid versions before 4.12 and 5.x before 5.0.3.
How can this vulnerability be exploited?
This vulnerability can be exploited by opening a TLS connection to an attacker-controlled server for HTTPS, which leads to a Denial of Service.
Where can I find more information about CVE-2020-14058?
More information about CVE-2020-14058 can be found at the following references: [link1], [link2], [link3].
- collector/nvd-index
- agent/type
- vendor/squid-cache
- canonical/squid-cache squid
- version/squid-cache squid/3.1
- version/squid-cache squid/3.5.28
- version/squid-cache squid/4.0
- version/squid-cache squid/5.0
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/31
- vendor/netapp
- canonical/netapp cloud manager