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Slackware Linux 14.0 / 14.1 / 14.2 / 15.0 / current ntp Multiple Vulnerabilities (SSA:2023-153-02)

medium Nessus Plugin ID 176640

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Synopsis

The remote Slackware Linux host is missing a security update to ntp.

Description

The version of ntp installed on the remote host is prior to 4.2.8p16. It is, therefore, affected by multiple vulnerabilities as referenced in the SSA:2023-153-02 advisory.

 - mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write in the cp<cpdec while loop. An adversary may be able to attack a client ntpq process, but cannot attack ntpd. (CVE-2023-26551)

 - mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when adding a decimal point. An adversary may be able to attack a client ntpq process, but cannot attack ntpd. (CVE-2023-26552)

 - mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when copying the trailing number.
 An adversary may be able to attack a client ntpq process, but cannot attack ntpd. (CVE-2023-26553)

 - mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when adding a '\0' character. An adversary may be able to attack a client ntpq process, but cannot attack ntpd. (CVE-2023-26554)

 - praecis_parse in ntpd/refclock_palisade.c in NTP 4.2.8p15 has an out-of-bounds write. Any attack method would be complex, e.g., with a manipulated GPS receiver. (CVE-2023-26555)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade the affected ntp package.

See Also

http://www.nessus.org/u?e0a80b2e

Plugin Details

Severity: Medium

ID: 176640

File Name: Slackware_SSA_2023-153-02.nasl

Version: 1.0

Type: local

Published: 6/2/2023

Updated: 6/2/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 4.6

Vector: CVSS2#AV:L/AC:H/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2023-26555

CVSS v3

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5.6

Vector: CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:slackware:slackware_linux:ntp, cpe:/o:slackware:slackware_linux, cpe:/o:slackware:slackware_linux:14.0, cpe:/o:slackware:slackware_linux:14.1, cpe:/o:slackware:slackware_linux:14.2, cpe:/o:slackware:slackware_linux:15.0

Required KB Items: Host/local_checks_enabled, Host/Slackware/release, Host/Slackware/packages

Exploit Ease: No known exploits are available

Patch Publication Date: 6/2/2023

Vulnerability Publication Date: 4/11/2023

Reference Information

CVE: CVE-2023-26551, CVE-2023-26552, CVE-2023-26553, CVE-2023-26554, CVE-2023-26555