Fedora EPEL 7 update for freexl

Published: 2017-09-27 | Updated: 2025-04-24

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2017-2923 CVE-2017-2924
CWE-ID	CWE-122
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #2 is available.
Vulnerable software	Fedora Operating systems & Components / Operating system freexl Operating systems & Components / Operating system package or component
Vendor	Fedoraproject

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Heap-based buffer overflow

EUVDB-ID: #VU8243

Risk: High

CVSSv4.0: 7.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2017-2923

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 weakness exists in the read_biff_next_record function due to heap-based buffer overflow while processing crafted XLS files. A remote attacker can trick the victim into opening a specially crafted XLS file trigger memory corruption and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 7

freexl: before 1.0.4-1.el7

CPE2.3

External links

https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2017-afdcf119f4

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. However, proof of concept for this vulnerability is available.

2) Heap-based buffer overflow

EUVDB-ID: #VU8244