Heap-based buffer overflow in busybox (Alpine package)



Published: 2016-03-22
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2016-2148
CWE-ID CWE-122
Exploitation vector Local network
Public exploit N/A
Vulnerable software
Subscribe 		busybox (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) Heap-based buffer overflow

EUVDB-ID: #VU18673

Risk: Medium

CVSSv3.1: 6.2 [CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-2148

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 udhcpc client when parsing DHCP packets with specially crafted OPTION_6RD option. A remote attacker can trick the victim to connect to malicious DHCP server, 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

busybox (Alpine package): 1.23.2-r0 - 1.24.1-r9

CPE2.3 External links

http://git.alpinelinux.org/aports/commit/?id=7bc6c09d16e91cb19bc94a68354c9ac892505aca
http://git.alpinelinux.org/aports/commit/?id=6525b7aa7fbb97336a7656a5408d6505c2ac7ca3
http://git.alpinelinux.org/aports/commit/?id=c922c8691878adba30461fdc8b068973853e1ba3


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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



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