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Heap-based buffer overflow in xorg-server (Alpine package)



Published: 2020-12-03
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2020-25712
CWE ID CWE-122
Exploitation vector Local
Public exploit N/A
Vulnerable software
Subscribe 		xorg-server (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Advisory

This security advisory describes one low risk vulnerability.

1) Heap-based buffer overflow

Risk: Low

CVSSv3: 7.7 [CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-25712

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within XkbSetDeviceInfo functionality. A local user can pass specially crafted data to the application, trigger heap-based buffer overflow and execute arbitrary code on the target system with elevated privileges.

Mitigation

Install update from vendor's website.

Vulnerable software versions


xorg-server (Alpine package)

Alpine Linux 3.12
1.20.9-r1


CPE External links

https://git.alpinelinux.org/aports/commit/?id=f64db6b75e35f3de90155c1b46c555e3e2899b43

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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