Vulnerability Details : CVE-2019-13226
deepin-clone before 1.1.3 uses a predictable path /tmp/.deepin-clone/mount/<block-dev-basename> in the Helper::temporaryMountDevice() function to temporarily mount a file system as root. An unprivileged user can prepare a symlink at this location to have the file system mounted in an arbitrary location. By winning a race condition, the attacker can also enter the mount point, thereby preventing a subsequent unmount of the file system.
Products affected by CVE-2019-13226
- cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
- cpe:2.3:a:deepin:deepin-clone:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-13226
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 31 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-13226
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.9
|
MEDIUM | AV:L/AC:M/Au:N/C:C/I:C/A:C |
3.4
|
10.0
|
NIST | |
|
7.0
|
HIGH | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.0
|
5.9
|
NIST |
CWE ids for CVE-2019-13226
-
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.Assigned by: nvd@nist.gov (Primary)
-
The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-13226
-
https://github.com/linuxdeepin/deepin-clone/commit/e079f3e2712b4f8c28e3e63e71ba1a1f90fce1ab
fix: Do not use the "/tmp" directory · linuxdeepin/deepin-clone@e079f3e · GitHubPatch;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TCHGRJV5CWTMYEE5B5C2FNMCFVP45S7H/
[SECURITY] Fedora 30 Update: dtkcore-2.0.16.1-1.fc30 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
http://www.openwall.com/lists/oss-security/2019/07/04/1
oss-security - deepin-clone: various symlink attacksMailing List;Third Party Advisory
-
https://bugzilla.suse.com/show_bug.cgi?id=1130388
Bug 1130388 – AUDIT-1: deepin-clone: new polkit action com.deepin.pkexec.deepin-cloneIssue Tracking;Third Party Advisory
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