CVE-2018-19854

An issue was discovered in the Linux kernel before 4.19.3. crypto_report_one() and related functions in crypto/crypto_user.c (the crypto user configuration API) do not fully initialize structures that are copied to userspace, potentially leaking sensitive memory to user programs. NOTE: this is a CVE-2013-2547 regression but with easier exploitability because the attacker does not need a capability (however, the system must have the CONFIG_CRYPTO_USER kconfig option).

CVSS v3.0 4.7 MEDIUM
CVSS v2.0 1.9 LOW

4.7^/10

CVSS v3.0 : MEDIUM

Vector : AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Exploitability : 1.0 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

1.9^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:M/Au:N/C:P/I:N/A:N

Exploitability : 3.4 / Impact : 2.9

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.3	Vendor Advisory
https://github.com/torvalds/linux/commit/f43f39958beb206b53292801e216d9b8a660f087	Patch Third Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f43f39958beb206b53292801e216d9b8a660f087	Patch Vendor Advisory
https://usn.ubuntu.com/3872-1/	Third Party Advisory
https://usn.ubuntu.com/3878-1/	Third Party Advisory
https://usn.ubuntu.com/3878-2/	Third Party Advisory
https://usn.ubuntu.com/3901-2/	Third Party Advisory
https://usn.ubuntu.com/3901-1/	Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3517
https://access.redhat.com/errata/RHSA-2019:3309

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Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:18.10:::::::*
	cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts:::
	cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::

Information

Published : 2018-12-04 08:29

Updated : 2019-11-05 17:15

NVD link : CVE-2018-19854

Mitre link : CVE-2018-19854

JSON object : View

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

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Products Affected

canonical

ubuntu_linux

linux

linux_kernel

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