Fedora 27 update for strongswan

1) Buffer underflow

EUVDB-ID: #VU13024

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-5388

CWE-ID: CWE-124 - Buffer Underwrite ('Buffer Underflow')

Exploit availability: No

Description

The vulnerability allows a local attacker to cause DoS condition on the target system.

The vulnerability exists due to buffer underflow stroke_socket.c while improper checking of packet length. A local attacker can submit specially crafted packets, trigger resource exhaustion and cause the service to crash while reading from the socket.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 27

strongswan: before 5.6.2-6.fc27

CPE2.3

• cpe:2.3:o:fedoraproject:fedora:27:*:*:*:*:*:*:*
• cpe:2.3:a:fedoraproject:strongswan:*:*:*:*:*:fedora:*:*

External links

https://bodhi.fedoraproject.org/updates/FEDORA-2018-bab8cabe2a

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.