yum 3.4.0/3.4.1/3.4.2/3.4.3 yum-cron/yum-cron.py sigCheckPkg input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in yum 3.4.0/3.4.1/3.4.2/3.4.3. The impacted element is the function sigCheckPkg of the file yum-cron/yum-cron.py. Such manipulation leads to input validation. This vulnerability is traded as CVE-2014-0022. There is no exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in yum 3.4.0/3.4.1/3.4.2/3.4.3. Affected by this issue is the function sigCheckPkg of the file yum-cron/yum-cron.py. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is integrity. CVE summarizes:

The installUpdates function in yum-cron/yum-cron.py in yum 3.4.3 and earlier does not properly check the return value of the sigCheckPkg function, which allows remote attackers to bypass the RMP package signing restriction via an unsigned package.

The weakness was shared 01/23/2014 by Gabriel Vlasiu as 1057377 as confirmed bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability is handled as CVE-2014-0022 since 12/03/2013. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 73234 (Amazon Linux AMI : yum (ALAS-2014-315)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350430 (Amazon Linux Security Advisory for yum: ALAS-2014-315).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at yum.baseurl.org.

The vulnerability is also documented in the databases at X-Force (90671), Tenable (73234), SecurityFocus (BID 65119†), Secunia (SA56637†) and Vulnerability Center (SBV-44151†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 73234
Nessus Name: Amazon Linux AMI : yum (ALAS-2014-315)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: yum.baseurl.org

Timelineinfo

12/03/2013 🔍
01/23/2014 +51 days 🔍
01/23/2014 +0 days 🔍
01/23/2014 +0 days 🔍
01/24/2014 +1 days 🔍
01/26/2014 +2 days 🔍
02/25/2014 +30 days 🔍
03/28/2014 +31 days 🔍
04/17/2014 +20 days 🔍
12/22/2024 +3902 days 🔍

Sourcesinfo

Advisory: 1057377
Researcher: Gabriel Vlasiu
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-0022 (🔍)
GCVE (CVE): GCVE-0-2014-0022
GCVE (VulDB): GCVE-100-12404

OVAL: 🔍

X-Force: 90671 - Yum yum-cron.py security bypass, Medium Risk
SecurityFocus: 65119 - Yum 'yum-cron/yum-cron.py' Security Bypass Vulnerability
Secunia: 56637 - YUM "YumCronBase()" Package Spoofing Vulnerability, Not Critical
Vulnerability Center: 44151 - yum 3.4.3 and Earlier Remote Security Bypass via an Unsigned Package, Medium

Entryinfo

Created: 02/25/2014 09:24
Updated: 12/22/2024 09:42
Changes: 02/25/2014 09:24 (74), 05/25/2017 10:54 (4), 06/09/2021 20:11 (3), 12/22/2024 09:42 (16)
Complete: 🔍
Committer: olku
Cache ID: 216:37A:103

Once again VulDB remains the best source for vulnerability data.

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