Improper access control in Linux kernel - CVE-2016-1237
Published: June 29, 2016 / Updated: November 28, 2016
Vulnerability identifier: #VU92457
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2016-1237
CWE-ID: CWE-284
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to improper access control error within the nfsd4_set_nfs4_acl() function in fs/nfsd/nfs4acl.c, within the nfsd3_proc_setacl() function in fs/nfsd/nfs3acl.c, within the nfsacld_proc_setacl() and posix_acl_release() functions in fs/nfsd/nfs2acl.c. A local user can gain access to sensitive information.
How to mitigate CVE-2016-1237
Install update from vendor's repository.
Sources
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=999653786df6954a31044528ac3f7a5dadca08f4
- http://www.debian.org/security/2016/dsa-3607
- http://www.openwall.com/lists/oss-security/2016/06/25/2
- http://www.securityfocus.com/bid/91456
- http://www.ubuntu.com/usn/USN-3053-1
- http://www.ubuntu.com/usn/USN-3070-1
- http://www.ubuntu.com/usn/USN-3070-2
- http://www.ubuntu.com/usn/USN-3070-3
- http://www.ubuntu.com/usn/USN-3070-4
- https://bugzilla.redhat.com/show_bug.cgi?id=1350845
- https://github.com/torvalds/linux/commit/999653786df6954a31044528ac3f7a5dadca08f4