Bug 1822020 (CVE-2020-5260)
| Summary: | CVE-2020-5260 git: Crafted URL containing new lines 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, bugzilla, c.david86, chrisw, fedora, hhorak, hpd-redhat, jorton, opohorel, pcahyna, pstodulk, sebastian.kisela, security-response-team, tmz, vondruch | ||||
| Target Milestone: | --- | Keywords: | Security | ||||
| Target Release: | --- | ||||||
| Hardware: | All | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | git 2.17.4, git 2.18.3, git 2.19.4, git 2.20.3, git 2.21.2, git 2.22.3, git 2.23.2, git 2.24.2, git 2.25.3, git 2.26.1 | Doc Type: | If docs needed, set a value | ||||
| Doc Text: |
A flaw was found in git. Credentials can be leaked through the use of a crafted URL that contains a newline, fooling the credential helper to give information for a different host. Highest threat from the vulnerability is to data confidentiality.
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Story Points: | --- | ||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2020-04-21 10:31:57 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: | 1822046, 1822047, 1822048, 1822049, 1822050, 1822051, 1822095, 1822096, 1824020, 1872717 | ||||||
| Bug Blocks: | 1822021 | ||||||
| Attachments: |
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Description
Huzaifa S. Sidhpurwala
2020-04-08 05:09:12 UTC
Acknowledgments: Name: the Git project Upstream: Felix Wilhelm (Google project zero) Created attachment 1677136 [details]
Upstream patch-set
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 packaged for this instance of RHEL. Upstream patch: https://github.com/git/git/compare/v2.17.3...v2.17.4 External References: https://lore.kernel.org/git/xmqqy2qy7xn8.fsf@gitster.c.googlers.com/ https://github.com/git/git/security/advisories/GHSA-qm7j-c969-7j4q Created git tracking bugs for this issue: Affects: fedora-all [bug 1824020] 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 for the presence of encoded newlines (%0a) or evidence of credential-protocol injections (e.g., host=github.com) 2. Avoid using submodules with untrusted repositories (don't use 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 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 7.5 EUS 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-2020:1503 https://access.redhat.com/errata/RHSA-2020:1503 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-2020-5260 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2020:1511 https://access.redhat.com/errata/RHSA-2020:1511 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions Via RHSA-2020:1518 https://access.redhat.com/errata/RHSA-2020:1518 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2020:1513 https://access.redhat.com/errata/RHSA-2020:1513 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 |