Bug 1826001 (CVE-2020-11008)
| Summary: | CVE-2020-11008 git: Crafted URL containing new lines, empty host or lacks a scheme can cause credential leak | ||||||
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| Product: | [Other] Security Response | Reporter: | Huzaifa S. Sidhpurwala <huzaifas> | ||||
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> | ||||
| Status: | CLOSED ERRATA | QA Contact: | |||||
| Severity: | high | Docs Contact: | |||||
| Priority: | high | ||||||
| Version: | unspecified | CC: | amahdal, besser82, c.david86, chrisw, hhorak, jorton, opohorel, pcahyna, pstodulk, sebastian.kisela, security-response-team, tmz | ||||
| Target Milestone: | --- | Keywords: | Security | ||||
| Target Release: | --- | ||||||
| Hardware: | All | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | git 2.17.5, git 2.18.4, git 2.19.5, git 2.20.4, git 2.21.3, git 2.22.4, git 2.23.3, git 2.24.3, git 2.25.4, git 2.26.2 | Doc Type: | If docs needed, set a value | ||||
| Doc Text: |
A flaw was found in git where credentials can be leaked through the use of a crafted URL. The crafted URL must contain a newline, empty host, or lack a scheme so that the credential helper is fulled into giving the information of a different host to the client. The highest threat from this vulnerability is to data confidentiality.
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Story Points: | --- | ||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2020-04-29 22:31:45 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: | 1826004, 1826005, 1826006, 1826007, 1826008, 1826009, 1826010, 1826011, 1826130, 1869466 | ||||||
| Bug Blocks: | 1826003 | ||||||
| Attachments: |
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Description
Huzaifa S. Sidhpurwala
2020-04-20 16:40:28 UTC
Acknowledgments: Name: the Git project Upstream: Carlo Arenas Created attachment 1680338 [details]
Upstream patch
Statement: Red Hat Enterprise Linux 6 is not affected by this flaw as the vulnerable version of git, version 1.7.9-rc0 and later, was never made available for this product. Mitigation: The most complete workaround is to disable credential helpers altogether: ~~~ git config --unset credential.helper git config --global --unset credential.helper git config --system --unset credential.helper ~~~ An alternative is to avoid malicious URLs: 1. Examine the hostname and username portion of URLs fed to git clone or git fetch for the presence of encoded newlines (%0A) or syntactic oddities (e.g., http:///host with three slashes). 2. Avoid using submodules with untrusted repositories (don't use git clone --recurse-submodules; use git submodule update only after examining the URLs found in .gitmodules). 3. Avoid tools which may run git clone on untrusted URLs under the hood. 4. Avoid using the credential helper by only cloning publicly available repositories. Created git tracking bugs for this issue: Affects: fedora-all [bug 1826130] Upstream commit: https://github.com/git/git/compare/v2.17.4...v2.17.5 External References: https://github.com/git/git/security/advisories/GHSA-hjc9-x69f-jqj7 https://lore.kernel.org/git/xmqq4kterq5s.fsf@gitster.c.googlers.com/ This issue has been addressed in the following products: Red Hat Software Collections for Red Hat Enterprise Linux 7 Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS Via RHSA-2020:1975 https://access.redhat.com/errata/RHSA-2020:1975 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-2020-11008 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.1 Extended Update Support Via RHSA-2020:1979 https://access.redhat.com/errata/RHSA-2020:1979 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions Via RHSA-2020:1978 https://access.redhat.com/errata/RHSA-2020:1978 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2020:1980 https://access.redhat.com/errata/RHSA-2020:1980 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2020:2337 https://access.redhat.com/errata/RHSA-2020:2337 This issue has been addressed in the following products: Red Hat Enterprise Linux 7.7 Extended Update Support Via RHSA-2020:3581 https://access.redhat.com/errata/RHSA-2020:3581 |