CVE-2018-1000204
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- CVE-2018-1000204
CVE Details
| Release Date: | 2018-06-26 |
Description
** DISPUTED ** Linux Kernel version 3.18 to 4.16 incorrectly handles an SG_IO ioctl on /dev/sg0 with dxfer_direction=SG_DXFER_FROM_DEV and an empty 6-byte cmdp. This may lead to copying up to 1000 kernel heap pages to the userspace. This has been fixed upstream in https://github.com/torvalds/linux/commit/a45b599ad808c3c982fdcdc12b0b8611c2f92824 already. The problem has limited scope, as users don't usually have permissions to access SCSI devices. On the other hand, e.g. the Nero user manual suggests doing chmod o+r+w /dev/sg* to make the devices accessible. NOTE: third parties dispute the relevance of this report, noting that the requirement for an attacker to have both the CAP_SYS_ADMIN and CAP_SYS_RAWIO capabilities makes it virtually impossible to exploit.
See more information about CVE-2018-1000204 from MITRE CVE dictionary and NIST NVD
CVSS v3.0 metrics
NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.
| Base Score: | 5.3 | Base Metrics: | AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N |
| Access Vector: | Network | Attack Complexity: | High |
| Privileges Required: | Low | User Interaction: | None |
| Scope: | Unchanged | Confidentiality Impact: | High |
| Integrity Impact: | None | Availability Impact: | None |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 5 (kernel-uek) | ELSA-2018-4301 | 2018-12-09 |
| Oracle Linux version 6 (dtrace-modules-3.8.13-118.28.1.el6uek) | ELSA-2018-4300 | 2018-12-06 |
| Oracle Linux version 6 (dtrace-modules-3.8.13-118.29.1.el6uek) | ELSA-2019-4316 | 2019-01-04 |
| Oracle Linux version 6 (kernel-uek) | ELSA-2018-4288 | 2018-11-28 |
| Oracle Linux version 6 (kernel-uek) | ELSA-2018-4300 | 2018-12-06 |
| Oracle Linux version 6 (kernel-uek) | ELSA-2018-4301 | 2018-12-09 |
| Oracle Linux version 6 (kernel-uek) | ELSA-2019-4316 | 2019-01-04 |
| Oracle Linux version 7 (dtrace-modules-3.8.13-118.28.1.el7uek) | ELSA-2018-4300 | 2018-12-06 |
| Oracle Linux version 7 (dtrace-modules-3.8.13-118.29.1.el7uek) | ELSA-2019-4316 | 2019-01-04 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2018-4288 | 2018-11-28 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2018-4300 | 2018-12-06 |
| Oracle Linux version 7 (kernel-uek) | ELSA-2019-4316 | 2019-01-04 |
| Oracle VM version 3.4 (kernel-uek) | OVMSA-2018-0284 | 2018-11-28 |
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