Vulnerability identifier: #VU15584
Vulnerability risk: Low
CVSSv3.1: 5 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Local
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a local attacker to cause DoS condition on the target system.
The vulnerability exists due to improper handling of ATTR_REPLACE operations by the xfs_attr_shortform_addname function, as defined in the fs/xfs/libxfs/xfs_attr.c source code file. A local attacker can access the system and execute an application that submits malicious input, trigger corruption of the Extended File System (XFS) and cause the service to crash.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Linux kernel: 4.16 - 4.16.18, 4.15.0 - 4.15.18, 4.14.0 - 4.14.78
External links
http://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7b38460dc8e4eafba06c78...
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. However, proof of concept for this vulnerability is available.