Integer overflow in busybox (Alpine package)

1) Integer overflow

EUVDB-ID: #VU11325

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-15874

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in the archival/libarchive/decompress_unlzma.c due to integer overflow. A remote attacker can trigger read access violation and cause the service to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

busybox (Alpine package): 1.27.2-r3

CPE2.3

• cpe:2.3:o:alpine:busybox_alpine_package:1.27.2-r3:*:*:*:*:alpine_linux:*:3.6

External links

https://git.alpinelinux.org/aports/commit/?id=ad3dbb9b8cb9f7ff7dee76859f765450567d3b0d
https://git.alpinelinux.org/aports/commit/?id=cf43a775225bcace5eda5940576e46caac38d471
https://git.alpinelinux.org/aports/commit/?id=7df9acaacd31997c1ac15243a644ef129376e4a7
https://git.alpinelinux.org/aports/commit/?id=fae8e63b4df5c1052fc79ed551d442263ddcb523
https://git.alpinelinux.org/aports/commit/?id=f36afe370ef2d04d4bc1821d6cdd428aa543dfe4
https://git.alpinelinux.org/aports/commit/?id=ac414d2b6399469baedb0a1f6cd3ca93f0aabf59

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.