Bubblewrap up to 0.4.0 Permission incorrect privileged apis

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Bubblewrap up to 0.4.0 and classified as critical. The impacted element is an unknown function of the component Permission. The manipulation results in incorrect use of privileged apis. This vulnerability was named CVE-2020-5291. The attack needs to be approached locally. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Bubblewrap up to 0.4.0. Affected is an unknown code of the component Permission. The manipulation with an unknown input leads to a incorrect use of privileged apis vulnerability. CWE is classifying the issue as CWE-648. The product does not conform to the API requirements for a function call that requires extra privileges. This could allow attackers to gain privileges by causing the function to be called incorrectly. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Bubblewrap (bwrap) before version 0.4.1, if installed in setuid mode and the kernel supports unprivileged user namespaces, then the `bwrap --userns2` option can be used to make the setuid process keep running as root while being traceable. This can in turn be used to gain root permissions. Note that this only affects the combination of bubblewrap in setuid mode (which is typically used when unprivileged user namespaces are not supported) and the support of unprivileged user namespaces. Known to be affected are: * Debian testing/unstable, if unprivileged user namespaces enabled (not default) * Debian buster-backports, if unprivileged user namespaces enabled (not default) * Arch if using `linux-hardened`, if unprivileged user namespaces enabled (not default) * Centos 7 flatpak COPR, if unprivileged user namespaces enabled (not default) This has been fixed in the 0.4.1 release, and all affected users should update.

The weakness was presented 03/31/2020 (GitHub Repository). The advisory is available at github.com. This vulnerability is traded as CVE-2020-5291 since 01/02/2020. The exploitability is told to be difficult. Local access is required to approach this attack. A authentication is needed for exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

Upgrading to version 0.4.1 eliminates this vulnerability.

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Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.2
NVD Vector: 🔍

CNA Base Score: 7.2
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Incorrect use of privileged apis
CWE: CWE-648
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
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: Bubblewrap 0.4.1
Patch: github.com

Timelineinfo

01/02/2020 🔍
03/31/2020 +89 days 🔍
04/01/2020 +1 days 🔍
05/10/2025 +1864 days 🔍

Sourcesinfo

Advisory: 1f7e2ad948c051054b683461885a0215f1806240
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-5291 (🔍)
GCVE (CVE): GCVE-0-2020-5291
GCVE (VulDB): GCVE-100-152478

Entryinfo

Created: 04/01/2020 08:34
Updated: 05/10/2025 00:41
Changes: 04/01/2020 08:34 (38), 04/01/2020 08:39 (11), 10/05/2020 15:18 (1), 05/12/2024 16:09 (18), 05/12/2024 16:17 (19), 05/10/2025 00:41 (7)
Complete: 🔍
Cache ID: 216::103

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