Heap-based buffer overflow in xen (Alpine package)

1) Heap-based buffer overflow

EUVDB-ID: #VU31957

Risk: Medium

CVSSv4.0: 5.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-0029

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Heap-based buffer overflow in the process_tx_desc function in the e1000 emulation (hw/e1000.c) in qemu-kvm 0.12, and possibly other versions,. A remote attacker can use crafted legacy mode packets. to trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

xen (Alpine package): 4.1.2-r4

CPE2.3

• cpe:2.3:o:alpine:xen_alpine_package:4.1.2-r4:*:*:*:*:alpine_linux:*:2.3

External links

https://git.alpinelinux.org/aports/commit/?id=cae7a12a244f566b4c5cc86f96ab495e1d106bbf
https://git.alpinelinux.org/aports/commit/?id=77ac4f17226a160b4cc792e724d832769521c488

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.