Buffer overflow in linux-grsec (Alpine package)

1) Buffer overflow

EUVDB-ID: #VU32957

Risk: Medium

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:Green]

CVE-ID: CVE-2013-0231

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The pciback_enable_msi function in the PCI backend driver (drivers/xen/pciback/conf_space_capability_msi.c) in Xen for the Linux kernel 2.6.18 and 3.8 allows guest OS users with PCI device access to cause a denial of service via a large number of kernel log messages

Mitigation

Install update from vendor's website.

Vulnerable software versions

linux-grsec (Alpine package): 3.0.24-r2 - 3.4.82-r0

CPE2.3

• cpe:2.3:a:alpine:linux-grsec_alpine_package:3.0.24-r2:*:*:*:*:alpine_linux:*:2.3
• cpe:2.3:a:alpine:linux-grsec_alpine_package:3.4.82-r0:*:*:*:*:alpine_linux:*:2.4

External links

https://git.alpinelinux.org/aports/commit/?id=003b0d2ddd02b16bd8e8a3ad96f69007c7470ba2

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.