#VU11324 Integer overflow in BusyBox - CVE-2017-15873

Vulnerability identifier: #VU11324

Vulnerability 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-2017-15873

CWE-ID: CWE-190

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
BusyBox
Universal components / Libraries / Software for developers

Vendor: busybox.net

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

The weakness exists in the get_next_block function in archival/libarchive/decompress_bunzip2.c due to integer overflow. A remote attacker can trigger write access violation and cause the service to crash.

Mitigation
Update to version 1.28.0.

Vulnerable software versions

BusyBox: 1.27.2

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External links
https://bugs.busybox.net/show_bug.cgi?id=10431

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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.