crun up to 0.10.4 Image libcrun/linux.c link following

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.9$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in crun up to 0.10.4. This affects an unknown part of the file libcrun/linux.c of the component Image Handler. The manipulation leads to link following. This vulnerability is traded as CVE-2019-18837. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Detailsinfo

A vulnerability was found in crun up to 0.10.4 and classified as critical. This issue affects an unknown code of the file libcrun/linux.c of the component Image Handler. The manipulation with an unknown input leads to a link following vulnerability. Using CWE to declare the problem leads to CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in crun before 0.10.5. With a crafted image, it doesn't correctly check whether a target is a symlink, resulting in access to files outside of the container. This occurs in libcrun/linux.c and libcrun/chroot_realpath.c.

The weakness was shared 11/13/2019 (GitHub Repository). It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2019-18837 since 11/08/2019. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 0.10.5 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 7.9

VulDB Base Score: 8.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.6
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Link following
CWE: CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: crun 0.10.5
Patch: github.com

Timelineinfo

11/08/2019 🔍
11/13/2019 +5 days 🔍
11/14/2019 +1 days 🔍
02/13/2024 +1552 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2019-18837 (🔍)
GCVE (CVE): GCVE-0-2019-18837
GCVE (VulDB): GCVE-100-145499

Entryinfo

Created: 11/14/2019 04:06 PM
Updated: 02/13/2024 03:02 PM
Changes: 11/14/2019 04:06 PM (39), 11/14/2019 04:11 PM (17), 02/13/2024 03:02 PM (5)
Complete: 🔍
Cache ID: 244:516:40

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