Veracode Vulnerability DatabaseVERACODE:17719Privilege Escalation
4.4 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
3.6 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:P/A:N
Linux kernel is vulnerable to privilege escalation. This occurs in ‘tmpfs’ file system, the set group id (setgid) bit is not properly cleared during a setxattr call. A local user can exploit this to change permissions on a file and gain elevated privileges on the target system which allows an attacker to perform unauthorized actions.
References
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=497de07d89c1410d76a15bec2bb41f24a2a89f31
www.debian.org/security/2017/dsa-3791
www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.6
www.openwall.com/lists/oss-security/2017/01/21/3
www.securityfocus.com/bid/95717
www.securitytracker.com/id/1038053
access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.9_Release_Notes/index.html
access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.9_Technical_Notes/index.html
access.redhat.com/errata/RHSA-2017:0817
access.redhat.com/security/cve/CVE-2017-5551
access.redhat.com/security/updates/classification/#moderate
bugzilla.redhat.com/show_bug.cgi?id=1325766
bugzilla.redhat.com/show_bug.cgi?id=1416126
bugzilla.redhat.com/show_bug.cgi?id=847106
github.com/torvalds/linux/commit/497de07d89c1410d76a15bec2bb41f24a2a89f31
Related
4.4 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
3.6 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:P/A:N