#VU40290 Out-of-bounds read in Debian Linux - CVE-2016-3993

Vulnerability identifier: #VU40290

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2016-3993

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Debian Linux
Operating systems & Components / Operating system

Vendor: Debian

Description

The vulnerability allows a remote attacker to gain access to perform denial of service (DoS) attack.

The vulnerability exists due to a boundary condition within the the __imlib_MergeUpdate function function in lib/updates.c file. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and crash the affected application.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Debian Linux: 7.0 - 8.0

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External links
https://lists.opensuse.org/opensuse-updates/2016-05/msg00076.html
https://www.debian.org/security/2016/dsa-3555
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=819818
https://git.enlightenment.org/legacy/imlib2.git/commit/?id=ce94edca1ccfbe314cb7cd9453433fad404ec7ef
https://sourceforge.net/p/enlightenment/mailman/message/35055012/

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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.