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Vulnerability Details :

CVE-2020-5291

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-31 Mar, 2020 | 18:00
Updated At-04 Aug, 2024 | 08:22
Rejected At-
Credits

Privilege escalation in setuid mode via user namespaces in Bubblewrap

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:31 Mar, 2020 | 18:00
Updated At:04 Aug, 2024 | 08:22
Rejected At:
▼CVE Numbering Authority (CNA)
Privilege escalation in setuid mode via user namespaces in Bubblewrap

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.

Affected Products
Vendor
containers
Product
bubblewrap
Versions
Affected
  • < 0.4.1
Problem Types
TypeCWE IDDescription
CWECWE-648CWE-648: Incorrect Use of Privileged APIs
Type: CWE
CWE ID: CWE-648
Description: CWE-648: Incorrect Use of Privileged APIs
Metrics
VersionBase scoreBase severityVector
3.17.2HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Version: 3.1
Base score: 7.2
Base severity: HIGH
Vector:
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/containers/bubblewrap/security/advisories/GHSA-j2qp-rvxj-43vj
x_refsource_CONFIRM
https://github.com/containers/bubblewrap/commit/1f7e2ad948c051054b683461885a0215f1806240
x_refsource_MISC
Hyperlink: https://github.com/containers/bubblewrap/security/advisories/GHSA-j2qp-rvxj-43vj
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/containers/bubblewrap/commit/1f7e2ad948c051054b683461885a0215f1806240
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/containers/bubblewrap/security/advisories/GHSA-j2qp-rvxj-43vj
x_refsource_CONFIRM
x_transferred
https://github.com/containers/bubblewrap/commit/1f7e2ad948c051054b683461885a0215f1806240
x_refsource_MISC
x_transferred
Hyperlink: https://github.com/containers/bubblewrap/security/advisories/GHSA-j2qp-rvxj-43vj
Resource:
x_refsource_CONFIRM
x_transferred
Hyperlink: https://github.com/containers/bubblewrap/commit/1f7e2ad948c051054b683461885a0215f1806240
Resource:
x_refsource_MISC
x_transferred
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:31 Mar, 2020 | 18:15
Updated At:02 Apr, 2020 | 17:33

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.17.8HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Secondary3.17.2HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Primary2.08.5HIGH
AV:N/AC:M/Au:S/C:C/I:C/A:C
Type: Primary
Version: 3.1
Base score: 7.8
Base severity: HIGH
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Type: Secondary
Version: 3.1
Base score: 7.2
Base severity: HIGH
Vector:
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Type: Primary
Version: 2.0
Base score: 8.5
Base severity: HIGH
Vector:
AV:N/AC:M/Au:S/C:C/I:C/A:C
CPE Matches
projectatomic
projectatomic
>>bubblewrap>>Versions before 0.4.1(exclusive)
cpe:2.3:a:projectatomic:bubblewrap:*:*:*:*:*:*:*:*
Debian GNU/Linux
debian
>>debian_linux>>10.0
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
archlinux
archlinux
>>arch_linux>>-
cpe:2.3:o:archlinux:arch_linux:-:*:*:*:*:*:*:*
centos
centos
>>centos>>7.0
cpe:2.3:o:centos:centos:7.0:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-269Primarynvd@nist.gov
CWE-648Secondarysecurity-advisories@github.com
CWE ID: CWE-269
Type: Primary
Source: nvd@nist.gov
CWE ID: CWE-648
Type: Secondary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/containers/bubblewrap/commit/1f7e2ad948c051054b683461885a0215f1806240security-advisories@github.com
Patch
Third Party Advisory
https://github.com/containers/bubblewrap/security/advisories/GHSA-j2qp-rvxj-43vjsecurity-advisories@github.com
Mitigation
Third Party Advisory
Hyperlink: https://github.com/containers/bubblewrap/commit/1f7e2ad948c051054b683461885a0215f1806240
Source: security-advisories@github.com
Resource:
Patch
Third Party Advisory
Hyperlink: https://github.com/containers/bubblewrap/security/advisories/GHSA-j2qp-rvxj-43vj
Source: security-advisories@github.com
Resource:
Mitigation
Third Party Advisory

Change History

0
Information is not available yet

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