Executive Summary
| Informations | |||
|---|---|---|---|
| Name | CVE-2023-0045 | First vendor Publication | 2023-04-25 |
| Vendor | Cve | Last vendor Modification | 2023-08-11 |
Security-Database Scoring CVSS v3
| Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | |||
|---|---|---|---|
| Overall CVSS Score | 7.5 | ||
| Base Score | 7.5 | Environmental Score | 7.5 |
| impact SubScore | 3.6 | Temporal Score | 7.5 |
| Exploitabality Sub Score | 3.9 | ||
| Attack Vector | Network | Attack Complexity | Low |
| Privileges Required | None | User Interaction | None |
| Scope | Unchanged | Confidentiality Impact | High |
| Integrity Impact | None | Availability Impact | None |
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : | |||
|---|---|---|---|
| Cvss Base Score | N/A | Attack Range | N/A |
| Cvss Impact Score | N/A | Attack Complexity | N/A |
| Cvss Expoit Score | N/A | Authentication | N/A |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| The current implementation of the prctl syscall does not issue an IBPB immediately during the syscall. The ib_prctl_set  function updates the Thread Information Flags (TIFs) for the task and updates the SPEC_CTRL MSR on the function __speculation_ctrl_update, but the IBPB is only issued on the next schedule, when the TIF bits are checked. This leaves the victim vulnerable to values already injected on the BTB, prior to the prctl syscall.  The patch that added the support for the conditional mitigation via prctl (ib_prctl_set) dates back to the kernel 4.9.176. We recommend upgrading past commit a664ec9158eeddd75121d39c9a0758016097fa96 |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-0045 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 100 % | CWE-610 | Externally Controlled Reference to a Resource in Another Sphere |
CPE : Common Platform Enumeration
Sources (Detail)
Alert History
| Date | Informations |
|---|---|
| 2023-09-05 13:36:27 |
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| 2023-09-05 01:27:58 |
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| 2023-09-02 13:34:01 |
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| 2023-09-02 01:28:24 |
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| 2023-08-12 05:27:45 |
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| 2023-08-12 01:27:41 |
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| 2023-08-11 05:27:51 |
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| 2023-08-11 01:28:32 |
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| 2023-08-06 05:27:43 |
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| 2023-08-06 01:27:21 |
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| 2023-08-04 05:27:52 |
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| 2023-08-04 01:27:44 |
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| 2023-08-02 21:27:48 |
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| 2023-07-23 09:27:27 |
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| 2023-07-22 00:27:31 |
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| 2023-07-18 13:23:30 |
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| 2023-07-14 13:29:29 |
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| 2023-07-14 01:27:25 |
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| 2023-06-06 13:18:50 |
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| 2023-05-05 21:27:20 |
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| 2023-05-04 02:19:14 |
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| 2023-05-04 02:17:33 |
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| 2023-05-03 21:27:15 |
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| 2023-05-03 09:27:14 |
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| 2023-04-26 17:27:18 |
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| 2023-04-26 05:27:20 |
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