Vulnerability Name:

CVE-2023-1075 (CCN-248805)

Assigned:2023-03-01
Published:2023-03-01
Updated:2023-04-05
Summary:Linux Kernel could allow a local authenticated attacker to obtain sensitive information, caused by improper checking for list emptiness by the tls_is_tx_ready() function. By sending a specially crafted request to access a type confused entry to the list_head, an attacker could exploit this vulnerability to obtain the last byte of the confused field that overlaps with rec->tx_ready, and use this information to launch further attacks against the affected system.
CVSS v3 Severity:3.3 Low (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)
2.9 Low (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): None
Availibility (A): None
6.2 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
5.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:4.9 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2023-1075

Source: XF
Type: UNKNOWN
linux-kernel-cve20231075-dos(248805)

Source: CCN
Type: Linux Kernel GIT Repository
net/tls: tls_is_tx_ready() checked list_entry

Source: secalert@redhat.com
Type: Mailing List, Patch
secalert@redhat.com

Source: CCN
Type: OSS Mailing List, Wed, 1 Mar 2023 16:23:54 +0100
CVE-2023-1075 - Linux Kernel: Type Confusion in tls_is_tx_ready()

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

    • * 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
    oval:org.opensuse.security:def:55527
    P
    		Security update for the Linux Kernel (Important)
    2023-03-31
    oval:org.opensuse.security:def:55522
    P
    		Security update for the Linux Kernel (Important)
    2023-03-28
    BACK
    linux linux kernel -