CVE-2017-17807
2.1 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:L/AC:L/Au:N/C:N/I:P/A:N
3.3 Low
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
5 Medium
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
10.3%
The KEYS subsystem in the Linux kernel before 4.14.6 omitted an access-control check when adding a key to the current task’s “default request-key keyring” via the request_key() system call, allowing a local user to use a sequence of crafted system calls to add keys to a keyring with only Search permission (not Write permission) to that keyring, related to construct_get_dest_keyring() in security/keys/request_key.c.
Affected configurations
References
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4dca6ea1d9432052afb06baf2e3ae78188a4410b
www.securityfocus.com/bid/102301
github.com/torvalds/linux/commit/4dca6ea1d9432052afb06baf2e3ae78188a4410b
lists.debian.org/debian-lts-announce/2018/01/msg00004.html
usn.ubuntu.com/3617-1/
usn.ubuntu.com/3617-2/
usn.ubuntu.com/3617-3/
usn.ubuntu.com/3619-1/
usn.ubuntu.com/3619-2/
usn.ubuntu.com/3620-1/
usn.ubuntu.com/3620-2/
usn.ubuntu.com/3632-1/
www.debian.org/security/2017/dsa-4073
www.debian.org/security/2018/dsa-4082
www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.6
Related
2.1 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:L/AC:L/Au:N/C:N/I:P/A:N
3.3 Low
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
5 Medium
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
10.3%