CVE-2017-5551
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
6.1 Medium
AI Score
Confidence
Low
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
0.0004 Low
EPSS
Percentile
5.3%
The simple_set_acl function in fs/posix_acl.c in the Linux kernel before 4.9.6 preserves the setgid bit during a setxattr call involving a tmpfs filesystem, which allows local users to gain group privileges by leveraging the existence of a setgid program with restrictions on execute permissions. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-7097.
| CPE | Name | Operator | Version |
|---|---|---|---|
| linux:linux_kernel | linux linux kernel | le | 4.9.5 |
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
bugzilla.redhat.com/show_bug.cgi?id=1416126
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
6.1 Medium
AI Score
Confidence
Low
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
0.0004 Low
EPSS
Percentile
5.3%