Vulnerability Name:

CVE-2023-1998 (CCN-253511)

Assigned:2023-04-12
Published:2023-04-12
Updated:2023-05-03
Summary:Linux Kernel could allow a local authenticated attacker to obtain sensitive information, caused by a flaw in the spectre_v2_user_select_mitigation function in arch/x86/kernel/cpu/bugs.c in the Spectre Mitigation component . By sending a specially crafted request, an attacker could exploit this vulnerability to obtain sensitive information, and use this information to launch further attacks against the affected system.
CVSS v3 Severity:5.6 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N)
5.1 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N/E:P/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
5.6 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N)
5.1 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N/E:P/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
CVSS v2 Severity:3.8 Low (CCN CVSS v2 Vector: AV:L/AC:H/Au:S/C:C/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): High
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): None
Availibility (A): None
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2023-1998

Source: XF
Type: UNKNOWN
linux-kernel-cve20231998-info-disc(253511)

Source: CCN
Type: Google Security Research GIT Repository
Linux Kernel: Spectre v2 SMT mitigations problem

Source: cve-coordination@google.com
Type: Exploit, Third Party Advisory
cve-coordination@google.com

Source: CCN
Type: Linux Kernel GIT Repository
x86/speculation: Allow enabling STIBP with legacy IBRS

Source: cve-coordination@google.com
Type: Patch
cve-coordination@google.com

Source: cve-coordination@google.com
Type: Mailing List, Third Party Advisory
cve-coordination@google.com

Source: cve-coordination@google.com
Type: Mailing List, Third Party Advisory
cve-coordination@google.com

Vulnerable Configuration:Configuration CCN 1:
  • cpe:/o:linux:linux_kernel:6.2:-:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:8187
    P
    Security update for the Linux Kernel (Important) (in QA)
    2023-06-15
    BACK
    linux linux kernel 6.2 -