openEuler 22.03 LTS SP2 update for kernel

Published: 2023-09-02

Risk	Medium
Patch available	YES
Number of vulnerabilities	7
CVE-ID	CVE-2023-1206 CVE-2023-34319 CVE-2023-38432 CVE-2023-3867 CVE-2023-40283 CVE-2023-4194 CVE-2023-1076
CWE-ID	CWE-400 CWE-119 CWE-125 CWE-416 CWE-843
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	openEuler Operating systems & Components / Operating system perf Operating systems & Components / Operating system package or component bpftool-debuginfo Operating systems & Components / Operating system package or component kernel-tools-debuginfo Operating systems & Components / Operating system package or component bpftool Operating systems & Components / Operating system package or component kernel-source Operating systems & Components / Operating system package or component kernel-tools-devel Operating systems & Components / Operating system package or component kernel-headers Operating systems & Components / Operating system package or component python3-perf Operating systems & Components / Operating system package or component kernel-debugsource Operating systems & Components / Operating system package or component kernel-tools Operating systems & Components / Operating system package or component kernel-debuginfo Operating systems & Components / Operating system package or component python3-perf-debuginfo Operating systems & Components / Operating system package or component kernel-devel Operating systems & Components / Operating system package or component perf-debuginfo 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 7 vulnerabilities.

1) Resource exhaustion

EUVDB-ID: #VU77953

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-1206

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a hash collision flaw in the IPv6 connection lookup table in the Linux kernel’s IPv6 functionality when an attacker makes a new kind of SYN flood attack. A remote attacker can increase the CPU usage of the server that accepts IPV6 connections up to 95%.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS SP2

perf: before 5.10.0-153.25.0.101

bpftool-debuginfo: before 5.10.0-153.25.0.101

kernel-tools-debuginfo: before 5.10.0-153.25.0.101

bpftool: before 5.10.0-153.25.0.101

kernel-source: before 5.10.0-153.25.0.101

kernel-tools-devel: before 5.10.0-153.25.0.101

kernel-headers: before 5.10.0-153.25.0.101

python3-perf: before 5.10.0-153.25.0.101

kernel-debugsource: before 5.10.0-153.25.0.101

kernel-tools: before 5.10.0-153.25.0.101

kernel-debuginfo: before 5.10.0-153.25.0.101

python3-perf-debuginfo: before 5.10.0-153.25.0.101

kernel-devel: before 5.10.0-153.25.0.101

perf-debuginfo: before 5.10.0-153.25.0.101

kernel: before 5.10.0-153.25.0.101

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1587

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.

2) Buffer overflow

EUVDB-ID: #VU79260

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-34319

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in netback when processing certain packets. A malicious guest can send specially crafted packets to the backend, trigger memory corruption and crash the hypervisor.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS SP2

perf: before 5.10.0-153.25.0.101

bpftool-debuginfo: before 5.10.0-153.25.0.101

kernel-tools-debuginfo: before 5.10.0-153.25.0.101

bpftool: before 5.10.0-153.25.0.101

kernel-source: before 5.10.0-153.25.0.101

kernel-tools-devel: before 5.10.0-153.25.0.101

kernel-headers: before 5.10.0-153.25.0.101

python3-perf: before 5.10.0-153.25.0.101

kernel-debugsource: before 5.10.0-153.25.0.101

kernel-tools: before 5.10.0-153.25.0.101

kernel-debuginfo: before 5.10.0-153.25.0.101

python3-perf-debuginfo: before 5.10.0-153.25.0.101

kernel-devel: before 5.10.0-153.25.0.101

perf-debuginfo: before 5.10.0-153.25.0.101

kernel: before 5.10.0-153.25.0.101

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1587

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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

3) Out-of-bounds read

EUVDB-ID: #VU79478

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-38432

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition in fs/smb/server/smb2misc.c in ksmbd. A remote attacker can send specially crafted packets to the system to trigger an out-of-bounds read error and read contents of memory on the system or perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS SP2

perf: before 5.10.0-153.25.0.101

bpftool-debuginfo: before 5.10.0-153.25.0.101

kernel-tools-debuginfo: before 5.10.0-153.25.0.101

bpftool: before 5.10.0-153.25.0.101

kernel-source: before 5.10.0-153.25.0.101

kernel-tools-devel: before 5.10.0-153.25.0.101

kernel-headers: before 5.10.0-153.25.0.101

python3-perf: before 5.10.0-153.25.0.101

kernel-debugsource: before 5.10.0-153.25.0.101

kernel-tools: before 5.10.0-153.25.0.101

kernel-debuginfo: before 5.10.0-153.25.0.101

python3-perf-debuginfo: before 5.10.0-153.25.0.101

kernel-devel: before 5.10.0-153.25.0.101

perf-debuginfo: before 5.10.0-153.25.0.101

kernel: before 5.10.0-153.25.0.101

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1587

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.

4) Out-of-bounds read

EUVDB-ID: #VU82661

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-3867

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition within the KSMBD implementation in the Linux kernel. A remote attacker can trigger an out-of-bounds read error and read contents of memory on the system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS SP2

perf: before 5.10.0-153.25.0.101

bpftool-debuginfo: before 5.10.0-153.25.0.101

kernel-tools-debuginfo: before 5.10.0-153.25.0.101

bpftool: before 5.10.0-153.25.0.101

kernel-source: before 5.10.0-153.25.0.101

kernel-tools-devel: before 5.10.0-153.25.0.101

kernel-headers: before 5.10.0-153.25.0.101

python3-perf: before 5.10.0-153.25.0.101

kernel-debugsource: before 5.10.0-153.25.0.101

kernel-tools: before 5.10.0-153.25.0.101

kernel-debuginfo: before 5.10.0-153.25.0.101

python3-perf-debuginfo: before 5.10.0-153.25.0.101

kernel-devel: before 5.10.0-153.25.0.101

perf-debuginfo: before 5.10.0-153.25.0.101

kernel: before 5.10.0-153.25.0.101

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1587

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.

5) Use-after-free

EUVDB-ID: #VU79714

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-40283

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the l2cap_sock_release() function in net/bluetooth/l2cap_sock.c. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS SP2

perf: before 5.10.0-153.25.0.101

bpftool-debuginfo: before 5.10.0-153.25.0.101

kernel-tools-debuginfo: before 5.10.0-153.25.0.101

bpftool: before 5.10.0-153.25.0.101

kernel-source: before 5.10.0-153.25.0.101

kernel-tools-devel: before 5.10.0-153.25.0.101

kernel-headers: before 5.10.0-153.25.0.101

python3-perf: before 5.10.0-153.25.0.101

kernel-debugsource: before 5.10.0-153.25.0.101

kernel-tools: before 5.10.0-153.25.0.101

kernel-debuginfo: before 5.10.0-153.25.0.101

python3-perf-debuginfo: before 5.10.0-153.25.0.101

kernel-devel: before 5.10.0-153.25.0.101

perf-debuginfo: before 5.10.0-153.25.0.101

kernel: before 5.10.0-153.25.0.101

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1587

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.

6) Type Confusion

EUVDB-ID: #VU79485

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-4194

CWE-ID: CWE-843 - Type confusion

Exploit availability: No

Description

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

The vulnerability exists due to a type confusion error in TUN/TAP functionality. A local user can bypass network filters and gain unauthorized access to some resources.

The vulnerability exists due to incomplete fix for #VU72742 (CVE-2023-1076).

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS SP2

perf: before 5.10.0-153.25.0.101

bpftool-debuginfo: before 5.10.0-153.25.0.101

kernel-tools-debuginfo: before 5.10.0-153.25.0.101

bpftool: before 5.10.0-153.25.0.101

kernel-source: before 5.10.0-153.25.0.101

kernel-tools-devel: before 5.10.0-153.25.0.101

kernel-headers: before 5.10.0-153.25.0.101

python3-perf: before 5.10.0-153.25.0.101

kernel-debugsource: before 5.10.0-153.25.0.101

kernel-tools: before 5.10.0-153.25.0.101

kernel-debuginfo: before 5.10.0-153.25.0.101

python3-perf-debuginfo: before 5.10.0-153.25.0.101

kernel-devel: before 5.10.0-153.25.0.101

perf-debuginfo: before 5.10.0-153.25.0.101

kernel: before 5.10.0-153.25.0.101

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1587

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.

7) Type Confusion

EUVDB-ID: #VU72742

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-1076

CWE-ID: CWE-843 - Type confusion

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a type confusion error during initialization of TUN/TAP sockets. A local user can trigger a type confusion error and execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS SP2

perf: before 5.10.0-153.25.0.101

bpftool-debuginfo: before 5.10.0-153.25.0.101

kernel-tools-debuginfo: before 5.10.0-153.25.0.101

bpftool: before 5.10.0-153.25.0.101

kernel-source: before 5.10.0-153.25.0.101

kernel-tools-devel: before 5.10.0-153.25.0.101

kernel-headers: before 5.10.0-153.25.0.101

python3-perf: before 5.10.0-153.25.0.101

kernel-debugsource: before 5.10.0-153.25.0.101

kernel-tools: before 5.10.0-153.25.0.101

kernel-debuginfo: before 5.10.0-153.25.0.101

python3-perf-debuginfo: before 5.10.0-153.25.0.101

kernel-devel: before 5.10.0-153.25.0.101

perf-debuginfo: before 5.10.0-153.25.0.101

kernel: before 5.10.0-153.25.0.101

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1587

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.