Race condition in coreutils (Alpine package)
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2017-18018 |
| CWE-ID | CWE-362 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
coreutils (Alpine package) Operating systems & Components / Operating system package or component |
| Vendor | Alpine Linux Development Team |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Race condition
EUVDB-ID: #VU33153
Risk: Low
CVSSv3.1: 4.1 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-18018
Exploit availability: No
DescriptionThe vulnerability allows a local authenticated user to manipulate data.
In GNU Coreutils through 8.29, chown-core.c in chown and chgrp does not prevent replacement of a plain file with a symlink during use of the POSIX "-R -L" options, which allows local users to modify the ownership of arbitrary files by leveraging a race condition.
MitigationInstall update from vendor's website.
Vulnerable software versionscoreutils (Alpine package): 8.27-r0 - 8.31-r0
External linkshttp://git.alpinelinux.org/aports/commit/?id=9d7cab77e911bba47d621d0a3560e5f8526df1bc
http://git.alpinelinux.org/aports/commit/?id=af7395aaa3100fd61a9d94b1f0e159eebc46255f
http://git.alpinelinux.org/aports/commit/?id=c5f39cc751f15865dfe6a004f5861679c0fc3571
http://git.alpinelinux.org/aports/commit/?id=2e1d0e8a8958d2fddd9e9fa9fe10de0622b01348
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
