EulerOS 2.0 SP5 : libksba (EulerOS-SA-2021-1203)

high Nessus Plugin ID 146120

Synopsis

The remote EulerOS host is missing multiple security updates.

Description

According to the versions of the libksba package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

- The append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.3 allows remote attackers to cause a denial of service (out-of-bounds read) by clearing the high bit of the byte after invalid utf-8 encoded data.(CVE-2016-4356)

- Off-by-one error in the append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.4 allows remote attackers to cause a denial of service (out-of-bounds read) via invalid utf-8 encoded data.
NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-4356.(CVE-2016-4574)

- Libksba before 1.3.4 allows remote attackers to cause a denial of service (out-of-bounds read and crash) via unspecified vectors, related to the 'returned length of the object from _ksba_ber_parse_tl.'(CVE-2016-4579)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected libksba packages.

See Also

http://www.nessus.org/u?4d8a89ea

Plugin Details

Severity: High

ID: 146120

File Name: EulerOS_SA-2021-1203.nasl

Version: 1.3

Type: local

Published: 2/4/2021

Updated: 1/24/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2016-4579

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:libksba, cpe:/o:huawei:euleros:2.0

Required KB Items: Host/local_checks_enabled, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/sp

Excluded KB Items: Host/EulerOS/uvp_version

Exploit Ease: No known exploits are available

Patch Publication Date: 2/3/2021

Reference Information

CVE: CVE-2016-4356, CVE-2016-4574, CVE-2016-4579