libzypp up to 17.4.x RPM access control

CVSS Meta Temp Score
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7.7$0-$5k0.00

A vulnerability was found in libzypp up to 17.4.x. It has been classified as critical. Affected is some unknown functionality of the component RPM Handler. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The decoupled download and installation steps in libzypp before 17.5.0 could lead to a corrupted RPM being left in the cache, where a later call would not display the corrupted RPM warning and allow installation, a problem caused by malicious warnings only displayed during download.

The bug was discovered 08/31/2018. The weakness was presented 08/31/2018 as Bug 1091624 as confirmed bug report (Bugzilla). The advisory is shared for download at bugzilla.suse.com. This vulnerability is traded as CVE-2018-7685 since 03/04/2018. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 112200 (SUSE SLES12 Security Update : libzypp, zypper (SUSE-SU-2018:2555-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171496 (SUSE Enterprise Linux Security Update for libzypp, zypper (SUSE-SU-2018:2814-1)).

Upgrading to version 17.5.0 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (112200). See 113972 for similar entry.

Productinfo

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Version

CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.7

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 7.8
CNA Vector (SUSE): 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

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Current Price Estimation: 🔍

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Nessus ID: 112200
Nessus Name: SUSE SLES12 Security Update : libzypp, zypper (SUSE-SU-2018:2555-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libzypp 17.5.0

Timelineinfo

03/04/2018 🔍
08/30/2018 +178 days 🔍
08/31/2018 +0 days 🔍
08/31/2018 +0 days 🔍
08/31/2018 +0 days 🔍
08/31/2018 +0 days 🔍
09/01/2018 +1 days 🔍
05/06/2023 +1708 days 🔍

Sourcesinfo

Advisory: Bug 1091624
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-7685 (🔍)
See also: 🔍

Entryinfo

Created: 09/01/2018 08:23
Updated: 05/06/2023 13:28
Changes: 09/01/2018 08:23 (71), 03/19/2020 20:48 (3), 05/06/2023 13:28 (13)
Complete: 🔍

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