Buffer Underflow in strongSwan Affects VPN Functionality
CVE-2018-5388

6.5MEDIUM

Key Information:

Vendor

Strongswan

Status
Strongswan
Vendor
CVE Published:
31 May 2018

What is CVE-2018-5388?

In strongSwan versions prior to 5.6.3, a vulnerability exists due to a missing packet length check in the stroke_socket.c file. This oversight allows for a buffer underflow that could cause resource exhaustion and result in a denial of service while handling socket communications. It's critical for users to upgrade to a secure version to mitigate potential impacts on their VPN operations.

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Affected Version(s)

strongSwan 5.6.3

References

http://www.kb.cert.org/vuls/id/338343
third-party-advisory
https://security.gentoo.org/glsa/201811-16
vendor-advisory
https://git.strongswan.org/?p=strongswan.git%3Ba=commitdi...

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Thanks to Kevin Backhouse for reporting this vulnerability.
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