openEuler 22.03 LTS SP2 update for kernel



Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2023-39197
CVE-2023-6176
CWE-ID CWE-125
CWE-476
Exploitation vector Network
Public exploit N/A
Vulnerable software
openEuler
Operating systems & Components / Operating system

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

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

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

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

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

perf
Operating systems & Components / Operating system package or component

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

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

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

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

bpftool
Operating systems & Components / Operating system package or component

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

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

kernel-tools-devel
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 2 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU84353

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-2023-39197

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 Netfilter Connection Tracking (conntrack) in the Linux kernel in the nf_conntrack_dccp_packet() function in net/netfilter/nf_conntrack_proto_dccp.c. A remote attacker can send specially crafted DCCP packets to the system, 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

kernel-debuginfo: before 5.10.0-153.34.0.111

perf-debuginfo: before 5.10.0-153.34.0.111

bpftool-debuginfo: before 5.10.0-153.34.0.111

python3-perf-debuginfo: before 5.10.0-153.34.0.111

kernel-headers: before 5.10.0-153.34.0.111

perf: before 5.10.0-153.34.0.111

kernel-tools-debuginfo: before 5.10.0-153.34.0.111

kernel-devel: before 5.10.0-153.34.0.111

kernel-source: before 5.10.0-153.34.0.111

kernel-debugsource: before 5.10.0-153.34.0.111

bpftool: before 5.10.0-153.34.0.111

kernel-tools: before 5.10.0-153.34.0.111

python3-perf: before 5.10.0-153.34.0.111

kernel-tools-devel: before 5.10.0-153.34.0.111

kernel: before 5.10.0-153.34.0.111

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1861


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) NULL pointer dereference

EUVDB-ID: #VU84096

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-6176

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the Linux kernel API for the cryptographic algorithm scatterwalk functionality in scatterwalk_copychunks(). A local user can send a malicious packet with specific socket configuration and crash the OS kernel.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS SP2

kernel-debuginfo: before 5.10.0-153.34.0.111

perf-debuginfo: before 5.10.0-153.34.0.111

bpftool-debuginfo: before 5.10.0-153.34.0.111

python3-perf-debuginfo: before 5.10.0-153.34.0.111

kernel-headers: before 5.10.0-153.34.0.111

perf: before 5.10.0-153.34.0.111

kernel-tools-debuginfo: before 5.10.0-153.34.0.111

kernel-devel: before 5.10.0-153.34.0.111

kernel-source: before 5.10.0-153.34.0.111

kernel-debugsource: before 5.10.0-153.34.0.111

bpftool: before 5.10.0-153.34.0.111

kernel-tools: before 5.10.0-153.34.0.111

python3-perf: before 5.10.0-153.34.0.111

kernel-tools-devel: before 5.10.0-153.34.0.111

kernel: before 5.10.0-153.34.0.111

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1861


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.



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