# CVE-2020-15811: squid: Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.  Sec...

CVE-2020-15811 is fixed in 8 products on 1 platform, first by squid 3.5.27-1ubuntu1.9, released August 24, 2020. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2020-15811
- Priority: High
- CVSS: 9.6 (Important)
- EPSS: 0.0407
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 23, 2020

## Description

Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.  Security Fix(es):  * squid: HTTP Request Smuggling could result in cache poisoning (CVE-2020-15810)  * squid: HTTP Request Splitting could result in cache poisoning (CVE-2020-15811)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libecap RHEL 8 | 0:1.0.1-2.module+el8.1.0+4044+36416a77 | [RHSA-2020:3623](https://patchblox.com/security/data/fix/linux/rhsa-2020-3623.md) | Sep 3, 2020 |
| Linux | libecap ol 8 | 0:1.0.1-2.module+el8.1.0+5405+03b963f4 | [ELSA-2020-3623](https://patchblox.com/security/data/fix/linux/elsa-2020-3623.md) | Sep 4, 2020 |
| Linux | libecap-devel RHEL 8 | 0:1.0.1-2.module+el8.1.0+4044+36416a77 | [RHSA-2020:3623](https://patchblox.com/security/data/fix/linux/rhsa-2020-3623.md) | Sep 3, 2020 |
| Linux | libecap-devel ol 8 | 0:1.0.1-2.module+el8.1.0+5405+03b963f4 | [ELSA-2020-3623](https://patchblox.com/security/data/fix/linux/elsa-2020-3623.md) | Sep 4, 2020 |
| Linux | squid RHEL 8 | 7:4.4-8.module+el8.2.0+7834+b8ecaeef.2 | [RHSA-2020:3623](https://patchblox.com/security/data/fix/linux/rhsa-2020-3623.md) | Sep 3, 2020 |
| Linux | squid Ubuntu 18.04.6 LTS (bionic) | 3.5.27-1ubuntu1.9 | [squid 3.5.27-1ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-squid-3.5.27-1ubuntu1.9.md) | Aug 24, 2020 |
| Linux | squid Ubuntu 20.04 LTS (focal) | 4.10-1ubuntu1.2 | [squid 4.10-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-squid-4.10-1ubuntu1.2.md) | Aug 24, 2020 |
| Linux | squid ol 8 | 7:4.4-8.module+el8.2.0+7778+aff7482f.2 | [ELSA-2020-3623](https://patchblox.com/security/data/fix/linux/elsa-2020-3623.md) | Sep 4, 2020 |
| Linux | squid-cgi Ubuntu 18.04.6 LTS (bionic) | 3.5.27-1ubuntu1.9 | [squid-cgi 3.5.27-1ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-squid-cgi-3.5.27-1ubuntu1.9.md) | Aug 24, 2020 |
| Linux | squid-cgi Ubuntu 20.04 LTS (focal) | 4.10-1ubuntu1.2 | [squid-cgi 4.10-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-squid-cgi-4.10-1ubuntu1.2.md) | Aug 24, 2020 |
| Linux | squid-common Ubuntu 18.04.6 LTS (bionic) | 3.5.27-1ubuntu1.9 | [squid-common 3.5.27-1ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-squid-common-3.5.27-1ubuntu1.9.md) | Aug 24, 2020 |
| Linux | squid-common Ubuntu 20.04 LTS (focal) | 4.10-1ubuntu1.2 | [squid-common 4.10-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-squid-common-4.10-1ubuntu1.2.md) | Aug 24, 2020 |
| Linux | squid-purge Ubuntu 18.04.6 LTS (bionic) | 3.5.27-1ubuntu1.9 | [squid-purge 3.5.27-1ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-squid-purge-3.5.27-1ubuntu1.9.md) | Aug 24, 2020 |
| Linux | squid-purge Ubuntu 20.04 LTS (focal) | 4.10-1ubuntu1.2 | [squid-purge 4.10-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-squid-purge-4.10-1ubuntu1.2.md) | Aug 24, 2020 |
| Linux | squid3 Ubuntu 18.04.6 LTS (bionic) | 3.5.27-1ubuntu1.9 | [squid3 3.5.27-1ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-squid3-3.5.27-1ubuntu1.9.md) | Aug 24, 2020 |
| Linux | squidclient Ubuntu 18.04.6 LTS (bionic) | 3.5.27-1ubuntu1.9 | [squidclient 3.5.27-1ubuntu1.9](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-squidclient-3.5.27-1ubuntu1.9.md) | Aug 24, 2020 |
| Linux | squidclient Ubuntu 20.04 LTS (focal) | 4.10-1ubuntu1.2 | [squidclient 4.10-1ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-squidclient-4.10-1ubuntu1.2.md) | Aug 24, 2020 |

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