Input validation error in linux-grsec (Alpine package)



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2015-7799
CWE-ID CWE-20
Exploitation vector Local
Public exploit N/A
Vulnerable software
 linux-grsec (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Input validation error

EUVDB-ID: #VU33641

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2015-7799

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (NULL pointer dereference and system crash) via a crafted PPPIOCSMAXCID ioctl call.

Mitigation

Install update from vendor's website.

Vulnerable software versions

linux-grsec (Alpine package): 3.18.21-r2 - 4.1.39-r0

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=3d085528053ed26c6d328dbb0c29afbd7741421c
https://git.alpinelinux.org/aports/commit/?id=7dbea86ac6d1cc87bf497ecefa083787a5ee84c1


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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