#VU31261 NULL pointer dereference in BusyBox - CVE-2015-9261

Vulnerability identifier: #VU31261

Vulnerability risk: Low

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2015-9261

CWE-ID: CWE-476

Exploitation vector: Local

Exploit availability: No

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

Vendor: busybox.net

Description

The vulnerability allows a local non-authenticated attacker to perform a denial of service (DoS) attack.

huft_build in archival/libarchive/decompress_gunzip.c in BusyBox before 1.27.2 misuses a pointer, causing segfaults and an application crash during an unzip operation on a specially crafted ZIP file.

Mitigation
Install update from vendor's website.

Vulnerable software versions

BusyBox: 1.27.0 - 1.27.1

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External links
https://packetstormsecurity.com/files/153278/WAGO-852-Industrial-Managed-Switch-Series-Code-Execution-Hardcoded-Credentials.html
https://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html
https://seclists.org/fulldisclosure/2019/Jun/18
https://seclists.org/fulldisclosure/2019/Sep/7
https://www.openwall.com/lists/oss-security/2015/10/25/3
https://bugs.debian.org/803097
https://git.busybox.net/busybox/commit/?id=1de25a6e87e0e627aa34298105a3d17c60a1f44e
https://lists.debian.org/debian-lts-announce/2018/07/msg00037.html
https://seclists.org/bugtraq/2019/Jun/14
https://seclists.org/bugtraq/2019/Sep/7
https://usn.ubuntu.com/3935-1/

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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