Heap-based buffer overflow in ruby (Alpine package)

1) Heap-based buffer overflow

EUVDB-ID: #VU32601

Risk: Medium

CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:A/U:Green]

CVE-ID: CVE-2013-4164

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

Exploit availability: Yes

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 Ruby 1.8, 1.9 before 1.9.3-p484, 2.0 before 2.0.0-p353, 2.1 before 2.1.0 preview2, and trunk before revision 43780. A remote attacker can use a string that is converted to a floating point value 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

ruby (Alpine package): 1.8.7_p374-r0

CPE2.3

• cpe:2.3:o:alpine:ruby_alpine_package:1.8.7_p374-r0:*:*:*:*:alpine_linux:*:2.3

External links

https://git.alpinelinux.org/aports/commit/?id=679810634a9c18b619329faf0b4ffcd21685712f
https://git.alpinelinux.org/aports/commit/?id=b6361c2673c2ca9129a2e13c4f5733373fa54375
https://git.alpinelinux.org/aports/commit/?id=9f092336584204f55aae9b269d12d2579647e0f5
https://git.alpinelinux.org/aports/commit/?id=84bc00a876b34d79953014d30291c32d31a406f2

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.