Squid before 4.13 and 5.x before 5.0.4 allows a trusted peer to perform Denial of Service by consuming all available CPU cycles during handling of a crafted Cache Digest response message. This only occurs when cache_peer is used with the cache digests feature. The problem exists because peerDigestHandleReply() livelocking in peer_digest.cc mishandles EOF.
CVSS Details
- CVSS 3.1 Base Score: 8.6
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libecapUpgrade libecap-devel | May 4, 2022 | Aug 24, 2020 |
| Alpine Linux | — | Upgrade squid | Jan 4, 2021 | Aug 24, 2020 |
| Amazon Linux Ami 2 | — | Upgrade squid-sysvinitUpgrade squidUpgrade squid-debuginfoUpgrade squid-migration-script | Oct 28, 2020 | Aug 24, 2020 |
| Amazon_linux | — | Upgrade squid | Nov 18, 2020 | Aug 24, 2020 |
| Centos_linux | — | Upgrade libecap-debugsourceUpgrade libecap-debuginfoUpgrade libecap-develUpgrade libecapUpgrade squidUpgrade squid-debuginfoUpgrade squid-sysvinitUpgrade squid-migration-scriptUpgrade squid-debugsource | Oct 1, 2020 | Aug 24, 2020 |
| Debian | — | Upgrade squid | Aug 31, 2020 | Aug 24, 2020 |
| Huawei Euleros 2_0_sp2 | — | Upgrade squid-migration-scriptUpgrade squid | Nov 3, 2020 | Aug 24, 2020 |
| Huawei Euleros 2_0_sp3 | — | Upgrade squidUpgrade squid-migration-script | Sep 28, 2020 | Aug 24, 2020 |
| Huawei Euleros 2_0_sp5 | — | Upgrade squid | Nov 2, 2020 | Aug 24, 2020 |
| Huawei Euleros 2_0_sp8 | — | Upgrade squid | Sep 29, 2020 | Aug 24, 2020 |
| Oracle Solaris | — | Upgrade web/proxy/squid to version 4.13-11.4.26.0.1.75.1 on Solaris 11.4 | Jan 19, 2021 | Aug 24, 2020 |
| Oracle_linux | — | Upgrade squid-sysvinitUpgrade squid-migration-scriptUpgrade libecap-develUpgrade libecapUpgrade squid | Oct 9, 2020 | Aug 23, 2020 |
| Redhat_linux | — | Upgrade squid-sysvinitUpgrade squid-migration-scriptUpgrade squid-debugsourceUpgrade squid-debuginfoUpgrade libecap-debugsourceNo solution existsUpgrade libecapUpgrade squidUpgrade libecap-debuginfoUpgrade libecap-devel | Oct 1, 2020 | Aug 24, 2020 |
| Rocky_linux | — | Upgrade libecap-develUpgrade libecap-debugsourceUpgrade libecap-debuginfoUpgrade libecap | Mar 12, 2024 | Aug 24, 2020 |
| Suse | — | Upgrade squid3Upgrade squid | Sep 3, 2020 | Aug 24, 2020 |
| Ubuntu | — | Upgrade squid | Aug 28, 2020 | Aug 24, 2020 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub