#VU39461 Heap-based buffer overflow in libplist - CVE-2017-6439

Vulnerability identifier: #VU39461

Vulnerability risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-6439

CWE-ID: CWE-122

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
libplist
Other software / Other software solutions

Vendor: libimobiledevice

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 the parse_string_node function in bplist.c in libimobiledevice libplist 1.12. A remote attacker can use a crafted plist file. 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
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

libplist: 1.12

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External links
https://www.securityfocus.com/bid/97278
https://github.com/libimobiledevice/libplist/commit/32ee5213fe64f1e10ec76c1ee861ee6f233120dd
https://github.com/libimobiledevice/libplist/issues/95
https://lists.debian.org/debian-lts-announce/2020/04/msg00002.html

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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.