openEuler update for syslinux

Published: 2023-07-17 | Updated: 2025-02-27

Risk	Low
Patch available	YES
Number of vulnerabilities	4
CVE-ID	CVE-2016-9840 CVE-2016-9842 CVE-2016-9843 CVE-2016-9841
CWE-ID	CWE-125 CWE-20
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	openEuler Operating systems & Components / Operating system syslinux-extlinux Operating systems & Components / Operating system package or component syslinux-debugsource Operating systems & Components / Operating system package or component syslinux-debuginfo Operating systems & Components / Operating system package or component syslinux-devel Operating systems & Components / Operating system package or component syslinux-efi64 Operating systems & Components / Operating system package or component syslinux-perl Operating systems & Components / Operating system package or component syslinux-extlinux-nonlinux Operating systems & Components / Operating system package or component syslinux-tftpboot Operating systems & Components / Operating system package or component syslinux-nonlinux Operating systems & Components / Operating system package or component syslinux Operating systems & Components / Operating system package or component
Vendor	openEuler

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Denial of service

EUVDB-ID: #VU6663

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-9840

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in zlib due to out-of-bounds pointer arithmetic in inftrees.c. A remote attacker can send a specially crafted document, trick the victim into opening it, and cause the application to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

syslinux-extlinux: before 6.04-12

syslinux-debugsource: before 6.04-12

syslinux-debuginfo: before 6.04-12

syslinux-devel: before 6.04-12

syslinux-efi64: before 6.04-12

syslinux-perl: before 6.04-12

syslinux-extlinux-nonlinux: before 6.04-12

syslinux-tftpboot: before 6.04-12

syslinux-nonlinux: before 6.04-12

syslinux: before 6.04-12

CPE2.3

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1433

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) Denial of service

EUVDB-ID: #VU6665

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-9842

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in zlib due to an undefined left shift of negative number. A remote attacker can send a specially crafted document, trick the victim into opening it, and cause the application to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

syslinux-extlinux: before 6.04-12

syslinux-debugsource: before 6.04-12

syslinux-debuginfo: before 6.04-12

syslinux-devel: before 6.04-12

syslinux-efi64: before 6.04-12

syslinux-perl: before 6.04-12

syslinux-extlinux-nonlinux: before 6.04-12

syslinux-tftpboot: before 6.04-12

syslinux-nonlinux: before 6.04-12

syslinux: before 6.04-12

CPE2.3

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1433

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) Denial of service

EUVDB-ID: #VU6666

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-9843

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in zlib due to big-endian out-of-bounds pointer. A remote attacker can send a specially crafted document, trick the victim into opening it, and cause the application to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

syslinux-extlinux: before 6.04-12

syslinux-debugsource: before 6.04-12

syslinux-debuginfo: before 6.04-12

syslinux-devel: before 6.04-12

syslinux-efi64: before 6.04-12

syslinux-perl: before 6.04-12

syslinux-extlinux-nonlinux: before 6.04-12

syslinux-tftpboot: before 6.04-12

syslinux-nonlinux: before 6.04-12

syslinux: before 6.04-12

CPE2.3

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1433

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) Denial of service

EUVDB-ID: #VU6664

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-9841

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in zlib due to out-of-bounds pointer arithmetic in inftrees.c. A remote attacker can cause the application to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

syslinux-extlinux: before 6.04-12

syslinux-debugsource: before 6.04-12

syslinux-debuginfo: before 6.04-12

syslinux-devel: before 6.04-12

syslinux-efi64: before 6.04-12

syslinux-perl: before 6.04-12

syslinux-extlinux-nonlinux: before 6.04-12

syslinux-tftpboot: before 6.04-12

syslinux-nonlinux: before 6.04-12

syslinux: before 6.04-12

CPE2.3

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1433

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.