Bug 1827563 (CVE-2020-11945)
| Summary: | CVE-2020-11945 squid: improper access restriction upon Digest Authentication nonce replay could lead to remote code execution | ||
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| Product: | [Other] Security Response | Reporter: | Marian Rehak <mrehak> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | CC: | anon.amish, bnater, code, jonathansteffan, luhliari, scorneli, yozone |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | squid 4.11, squid 5.0.2 | Doc Type: | If docs needed, set a value |
| Doc Text: |
A flaw was found in Squid, where a remote attacker can replay a sniffed Digest Authentication nonce to gain access to resources that are otherwise forbidden. This issue occurs because the attacker can overflow the nonce reference counter, which results in remote code execution if the pooled token credentials are freed.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2020-05-06 16:32:00 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1827564, 1828359, 1828361, 1828363, 1828365, 1828367, 1828369 | ||
| Bug Blocks: | 1827553 | ||
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Description
Marian Rehak
2020-04-24 08:19:57 UTC
Created squid tracking bugs for this issue: Affects: fedora-all [bug 1827564] Upstream Fix: https://github.com/squid-cache/squid/pull/585 External References: http://www.squid-cache.org/Advisories/SQUID-2020_4.txt This issue has been addressed in the following products: Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions Via RHSA-2020:2038 https://access.redhat.com/errata/RHSA-2020:2038 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.1 Extended Update Support Via RHSA-2020:2039 https://access.redhat.com/errata/RHSA-2020:2039 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2020:2041 https://access.redhat.com/errata/RHSA-2020:2041 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2020:2040 https://access.redhat.com/errata/RHSA-2020:2040 This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2020-11945 |