lxd up to 0.19-0ubuntu4 doUidshiftIntoContainer race condition

CVSS Meta Temp Score
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CTI Interest Score
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7.5$0-$5k0.00

A vulnerability has been found in lxd up to 0.19-0ubuntu4 and classified as critical. This vulnerability affects the function doUidshiftIntoContainer. The manipulation with an unknown input leads to a race condition vulnerability. The CWE definition for the vulnerability is CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

LXD before version 0.19-0ubuntu5 doUidshiftIntoContainer() has an unsafe Chmod() call that races against the stat in the Filepath.Walk() function. A symbolic link created in that window could cause any file on the system to have any mode of the attacker's choice.

The weakness was released 04/22/2019. This vulnerability was named CVE-2015-1340 since 01/22/2015. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

Upgrading to version 0.19-0ubuntu5 eliminates this vulnerability.

Productinfo

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Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
ATT&CK: Unknown

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: lxd 0.19-0ubuntu5
Patch: github.com

Timelineinfo

01/22/2015 🔍
04/22/2019 +1551 days 🔍
04/23/2019 +1 days 🔍
09/06/2023 +1597 days 🔍

Sourcesinfo

Advisory: 19c6961cc1012c8a529f20807328a9357f5034f4
Status: Not defined

CVE: CVE-2015-1340 (🔍)

Entryinfo

Created: 04/23/2019 08:31
Updated: 09/06/2023 08:50
Changes: 04/23/2019 08:31 (36), 06/01/2020 08:36 (17), 09/06/2023 08:50 (6)
Complete: 🔍

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