Bug 1741727 (CVE-2019-10220)
Summary: | CVE-2019-10220 kernel: CIFS: Relative paths injection in directory entry lists | ||
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Product: | [Other] Security Response | Reporter: | Pedro Sampaio <psampaio> |
Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
Status: | CLOSED NOTABUG | QA Contact: | |
Severity: | high | Docs Contact: | |
Priority: | high | ||
Version: | unspecified | CC: | acaringi, airlied, bhu, blc, brdeoliv, bskeggs, carnil, chenwei9, dhoward, dvlasenk, esammons, fhrbata, hdegoede, hkrzesin, iboverma, ichavero, itamar, jarodwilson, jeremy, jforbes, jglisse, jlelli, john.j5live, jonathan, josef, jross, jshortt, jstancek, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, masami256, matt, mchehab, mcressma, mjg59, mlangsdo, nmurray, plougher, qzhao, rt-maint, rvrbovsk, security-response-team, steved, williams, wmealing, yozone |
Target Milestone: | --- | Keywords: | Security |
Target Release: | --- | ||
Hardware: | All | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | If docs needed, set a value | |
Doc Text: |
A flaw was found in the Linux kernel's SMB client. Path separators are not checked by cifs.ko when parsing directory listings back. A bad server can return relative paths that will be returned as-is to userspace potentially leading to manipulating of files outside shared mount points. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
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Story Points: | --- |
Clone Of: | Environment: | ||
Last Closed: | 2019-12-16 03:33:01 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: | 1777399 | ||
Bug Blocks: | 1741728 |
Description
Pedro Sampaio
2019-08-16 00:41:52 UTC
Acknowledgments: Name: the SUSE Labs samba team Upstream: Michael Hanselmann Created kernel tracking bugs for this issue: Affects: fedora-all [bug 1777399] Hi https://bugzilla.redhat.com/show_bug.cgi?id=1741728 is not publicly accessible, which I assume contains more information. Can you make those available? Is the issue fixed upstream? Regards, Salvatore Seems related to the SuSE bugzilla entry at https://bugzilla.suse.com/show_bug.cgi?id=1144903 This was fixed for Fedora with the 5.3.8 stable kernel updates. Hi Salvatore, In reply to comment #3: > https://bugzilla.redhat.com/show_bug.cgi?id=1741728 is not publicly > accessible, which I assume contains more information. Can you make those > available? no, sorry. > Is the issue fixed upstream? This issue was solved on the VFS level not on the per filesystem level. Please see comment #0. Thank you, -- Petr Matousek / Red Hat Product Security Gday, I think that this was fixed here: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/fs?id=4f11918ab93bc113ec0831ed2ab7b88847d44dd7 Which kinda negates the need for this fix as its fixing it for all networked filesystems on the vfs level. Does this answre your question ? Many thanks for confirming! No problem , thanks for the follow up. |