Fedora EPEL 7 update for opensmtpd



| Updated: 2025-04-24
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2015-7687
CWE-ID CWE-416
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Fedora
Operating systems & Components / Operating system

opensmtpd
Operating systems & Components / Operating system package or component

Vendor Fedoraproject

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Use-after-free

EUVDB-ID: #VU38065

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2015-7687

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing vectors involving req_ca_vrfy_smtp and req_ca_vrfy_mta. A remote attackers can cause a denial of service (crash) or execute arbitrary code.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 7

opensmtpd: before 5.7.2p1-1.el7

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2015-bf18ffa52d


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.



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