Fedora EPEL 6 update for p7zip

1) Heap-based buffer overflow

EUVDB-ID: #VU10377

Risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2017-17969

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to heap-based buffer overflow in the NCompress::NShrink::CDecoder::CodeReal method. A remote attacker can trick the victim into opening a specially crafted ZIP archive, trigger memory corruption and out-of-bounds write execute arbitrary code with privileges of the current user.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 6.0

p7zip: before 16.02-9.el6

CPE2.3

• cpe:2.3:o:fedoraproject:fedora:6.0:*:*:*:*:*:*:*
• cpe:2.3:a:fedoraproject:p7zip:*:*:*:*:*:fedora:*:*

External links

https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2018-a0fe4d146c

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.