Vulnerability 13811 - CERT Civis.Net

Vulnerability Name:

CCN-13811

Published:

2003-11-20

Updated:

2003-11-20

Summary:

OpenBSD is vulnerable to a buffer overflow in the semctl and semop functions, caused by improper bounds checking in the sysv_sem.c file. A local attacker could exploit this vulnerability to overflow a buffer and cause the system to crash.

CVSS v3 Severity:

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)

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:

Denial of Service

References:

Source: CCN
Type: OpenBSD 3.4 errata Web page
008: RELIABILITY FIX: November 20, 2003

Source: CCN
Type: OpenBSD 3.3 errata Web page
013: RELIABILITY FIX: November 20, 2003

Source: CCN
Type: BID-9086
OpenBSD semctl/semop Local Unexpected Array Indexing Vulnerability

Source: XF
Type: UNKNOWN
openbsd-semctl-semop-dos(13811)

Vulnerable Configuration:

Configuration CCN 1:

cpe:/o:openbsd:openbsd:3.3:*:*:*:*:*:*:*

OR cpe:/o:openbsd:openbsd:3.4:*:*:*:*:*:*:*

Denotes that component is vulnerable

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