squid: An issue was discovered in Squid before 5.0.2
CVE-2020-11945 is fixed in 8 products on 1 platform, first by squid 3.5.27-1ubuntu1.6, released April 23, 2020. It is not reported as exploited. Patch Radar priority: High.
An issue was discovered in Squid before 5.0.2. A remote attacker can replay a sniffed Digest Authentication nonce to gain access to resources that are otherwise forbidden. This occurs because the attacker can overflow the nonce reference counter (a short integer). Remote code execution may occur if the pooled token credentials are freed (instead of replayed as valid credentials).
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libecap · RHEL 8 | 0:1.0.1-2.module+el8.1.0+4044+36416a77 | RHSA-2020:2041 | May 6, 2020 |
| libecap · ol 8 | 0:1.0.1-2.module+el8.1.0+5405+03b963f4 | ELSA-2020-2041 | May 12, 2020 |
| libecap-devel · RHEL 8 | 0:1.0.1-2.module+el8.1.0+4044+36416a77 | RHSA-2020:2041 | May 6, 2020 |
| libecap-devel · ol 8 | 0:1.0.1-2.module+el8.1.0+5405+03b963f4 | ELSA-2020-2041 | May 12, 2020 |
| squid · RHEL 8 | 7:4.4-8.module+el8.2.0+6449+6ba3df3e.1 | RHSA-2020:2041 | May 6, 2020 |
| squid · Ubuntu 18.04.6 LTS (bionic) | 3.5.27-1ubuntu1.6 | squid 3.5.27-1ubuntu1.6 | Apr 23, 2020 |
| squid · Ubuntu 20.04 LTS (focal) | 4.10-1ubuntu1.1 | squid 4.10-1ubuntu1.1 | Apr 23, 2020 |
| squid · ol 8 | 7:4.4-8.module+el8.2.0+7611+d512f060.1 | ELSA-2020-2041 | May 12, 2020 |
| squid-cgi · Ubuntu 18.04.6 LTS (bionic) | 3.5.27-1ubuntu1.6 | squid-cgi 3.5.27-1ubuntu1.6 | Apr 23, 2020 |
| squid-cgi · Ubuntu 20.04 LTS (focal) | 4.10-1ubuntu1.1 | squid-cgi 4.10-1ubuntu1.1 | Apr 23, 2020 |
| squid-common · Ubuntu 18.04.6 LTS (bionic) | 3.5.27-1ubuntu1.6 | squid-common 3.5.27-1ubuntu1.6 | Apr 23, 2020 |
| squid-common · Ubuntu 20.04 LTS (focal) | 4.10-1ubuntu1.1 | squid-common 4.10-1ubuntu1.1 | Apr 23, 2020 |
| squid-purge · Ubuntu 18.04.6 LTS (bionic) | 3.5.27-1ubuntu1.6 | squid-purge 3.5.27-1ubuntu1.6 | Apr 23, 2020 |
| squid-purge · Ubuntu 20.04 LTS (focal) | 4.10-1ubuntu1.1 | squid-purge 4.10-1ubuntu1.1 | Apr 23, 2020 |
| squid3 · Ubuntu 18.04.6 LTS (bionic) | 3.5.27-1ubuntu1.6 | squid3 3.5.27-1ubuntu1.6 | Apr 23, 2020 |
| squidclient · Ubuntu 18.04.6 LTS (bionic) | 3.5.27-1ubuntu1.6 | squidclient 3.5.27-1ubuntu1.6 | Apr 23, 2020 |
| squidclient · Ubuntu 20.04 LTS (focal) | 4.10-1ubuntu1.1 | squidclient 4.10-1ubuntu1.1 | Apr 23, 2020 |
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