openEuler update for kernel



Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2021-4155
CVE-2021-45485
CVE-2021-45486
CWE-ID CWE-264
CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
 openEuler
Operating systems & Components / Operating system

python3-perf
Operating systems & Components / Operating system package or component

kernel-debuginfo
Operating systems & Components / Operating system package or component

kernel-tools
Operating systems & Components / Operating system package or component

kernel-tools-devel
Operating systems & Components / Operating system package or component

kernel-tools-debuginfo
Operating systems & Components / Operating system package or component

python3-perf-debuginfo
Operating systems & Components / Operating system package or component

bpftool-debuginfo
Operating systems & Components / Operating system package or component

kernel-devel
Operating systems & Components / Operating system package or component

kernel-debugsource
Operating systems & Components / Operating system package or component

python2-perf-debuginfo
Operating systems & Components / Operating system package or component

kernel-source
Operating systems & Components / Operating system package or component

perf
Operating systems & Components / Operating system package or component

python2-perf
Operating systems & Components / Operating system package or component

perf-debuginfo
Operating systems & Components / Operating system package or component

bpftool
Operating systems & Components / Operating system package or component

kernel
Operating systems & Components / Operating system package or component

Vendor openEuler

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU59812

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-4155

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to the OS kernel does not impose correctly security restrictions. A local user can gain access to sensitive information on the system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 20.03 LTS SP3

python3-perf: before 4.19.90-2201.4.0.0135

kernel-debuginfo: before 4.19.90-2201.4.0.0135

kernel-tools: before 4.19.90-2201.4.0.0135

kernel-tools-devel: before 4.19.90-2201.4.0.0135

kernel-tools-debuginfo: before 4.19.90-2201.4.0.0135

python3-perf-debuginfo: before 4.19.90-2201.4.0.0135

bpftool-debuginfo: before 4.19.90-2201.4.0.0135

kernel-devel: before 4.19.90-2201.4.0.0135

kernel-debugsource: before 4.19.90-2201.4.0.0135

python2-perf-debuginfo: before 4.19.90-2201.4.0.0135

kernel-source: before 4.19.90-2201.4.0.0135

perf: before 4.19.90-2201.4.0.0135

python2-perf: before 4.19.90-2201.4.0.0135

perf-debuginfo: before 4.19.90-2201.4.0.0135

bpftool: before 4.19.90-2201.4.0.0135

kernel: before 4.19.90-2201.4.0.0135

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1504


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Information disclosure

EUVDB-ID: #VU63668

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-45485

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to an error in the IPv6 implementation in the Linux kernel. A remote attacker can gain access to sensitive information.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 20.03 LTS SP3

python3-perf: before 4.19.90-2201.4.0.0135

kernel-debuginfo: before 4.19.90-2201.4.0.0135

kernel-tools: before 4.19.90-2201.4.0.0135

kernel-tools-devel: before 4.19.90-2201.4.0.0135

kernel-tools-debuginfo: before 4.19.90-2201.4.0.0135

python3-perf-debuginfo: before 4.19.90-2201.4.0.0135

bpftool-debuginfo: before 4.19.90-2201.4.0.0135

kernel-devel: before 4.19.90-2201.4.0.0135

kernel-debugsource: before 4.19.90-2201.4.0.0135

python2-perf-debuginfo: before 4.19.90-2201.4.0.0135

kernel-source: before 4.19.90-2201.4.0.0135

perf: before 4.19.90-2201.4.0.0135

python2-perf: before 4.19.90-2201.4.0.0135

perf-debuginfo: before 4.19.90-2201.4.0.0135

bpftool: before 4.19.90-2201.4.0.0135

kernel: before 4.19.90-2201.4.0.0135

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1504


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Information disclosure

EUVDB-ID: #VU63577

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-45486

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to incorrect implementation of the IPv4 protocol in the Linux kernel. A remote attacker can disclose internal state in some situations.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 20.03 LTS SP3

python3-perf: before 4.19.90-2201.4.0.0135

kernel-debuginfo: before 4.19.90-2201.4.0.0135

kernel-tools: before 4.19.90-2201.4.0.0135

kernel-tools-devel: before 4.19.90-2201.4.0.0135

kernel-tools-debuginfo: before 4.19.90-2201.4.0.0135

python3-perf-debuginfo: before 4.19.90-2201.4.0.0135

bpftool-debuginfo: before 4.19.90-2201.4.0.0135

kernel-devel: before 4.19.90-2201.4.0.0135

kernel-debugsource: before 4.19.90-2201.4.0.0135

python2-perf-debuginfo: before 4.19.90-2201.4.0.0135

kernel-source: before 4.19.90-2201.4.0.0135

perf: before 4.19.90-2201.4.0.0135

python2-perf: before 4.19.90-2201.4.0.0135

perf-debuginfo: before 4.19.90-2201.4.0.0135

bpftool: before 4.19.90-2201.4.0.0135

kernel: before 4.19.90-2201.4.0.0135

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1504


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



###SIDEBAR###