Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2023-5941

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
08/11/2023
Last modified:
14/12/2023

Description

In versions of FreeBSD 12.4-RELEASE prior to 12.4-RELEASE-p7 and FreeBSD 13.2-RELEASE prior to 13.2-RELEASE-p5 the __sflush() stdio function in libc does not correctly update FILE objects' write space members for write-buffered streams when the write(2) system call returns an error.  Depending on the nature of an application that calls libc's stdio functions and the presence of errors returned from the write(2) system call (or an overridden stdio write routine) a heap buffer overflow may occur. Such overflows may lead to data corruption or the execution of arbitrary code at the privilege level of the calling program.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
9.80
Severity 3.x
CRITICAL

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:* 12.4 (excluding)
cpe:2.3:o:freebsd:freebsd:*:*:*:*:*:*:*:* 13.0 (including) 13.2 (excluding)
cpe:2.3:o:freebsd:freebsd:12.4:-:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.4:p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.4:p2:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.4:p3:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.4:p4:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.4:p5:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.4:p6:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.4:rc2-p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.4:rc2-p2:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.2:-:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.2:p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.2:p2:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:13.2:p3:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools