strongSwan up to 5.6.2 stroke_socket.c Packet memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in strongSwan up to 5.6.2. It has been classified as problematic. Affected is an unknown function of the file stroke_socket.c. The manipulation as part of Packet leads to memory corruption. This vulnerability is traded as CVE-2018-5388. It is possible to launch the attack remotely. There is no exploit available. It is recommended to apply a patch to fix this issue. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Detailsinfo

A vulnerability was found in strongSwan up to 5.6.2 (Network Encryption Software) and classified as problematic. This issue affects some unknown processing of the file stroke_socket.c. The manipulation as part of a Packet leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. The summary by CVE is:

In stroke_socket.c in strongSwan before 5.6.3, a missing packet length check could allow a buffer underflow, which may lead to resource exhaustion and denial of service while reading from the socket.

The bug was discovered 05/23/2018. The weakness was released 05/31/2018 by Kevin Backhouse as confirmed advisory (CERT.org). The advisory is shared at kb.cert.org. The identification of this vulnerability is CVE-2018-5388 since 01/12/2018. The exploitation is known to be easy. The attack may be initiated remotely. Required for exploitation is a simple authentication. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 8 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 110274 (FreeBSD : strongswan -- Fix Denial-of-Service Vulnerability strongSwan (CVE-2018-10811, CVE-2018-5388) (7fc3e827-64a5-11e8-aedb-00224d821998)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176412 (Debian Security Update for strongswan (DSA 4229-1)).

Upgrading to version 5.6.3 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.strongswan.org. The best possible mitigation is suggested to be patching the affected component. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (110274) and SecurityFocus (BID 104263†). Entries connected to this vulnerability are available at VDB-119689, VDB-124484 and VDB-124485. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 110274
Nessus Name: FreeBSD : strongswan -- Fix Denial-of-Service Vulnerability strongSwan (CVE-2018-10811, CVE-2018-5388) (7fc3e827-64a5-11e8-aedb-00224d821998)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 861410
OpenVAS Name: Fedora Update for strongswan FEDORA-2018-3731a89e20
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: strongSwan 5.6.3
Patch: git.strongswan.org

Timelineinfo

01/12/2018 🔍
05/23/2018 +131 days 🔍
05/23/2018 +0 days 🔍
05/31/2018 +7 days 🔍
05/31/2018 +0 days 🔍
05/31/2018 +0 days 🔍
06/01/2018 +1 days 🔍
06/01/2018 +0 days 🔍
01/27/2025 +2432 days 🔍

Sourcesinfo

Advisory: USN-3771-1
Researcher: Kevin Backhouse
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-5388 (🔍)
GCVE (CVE): GCVE-0-2018-5388
GCVE (VulDB): GCVE-100-118481

OVAL: 🔍

CERT: 🔍
SecurityFocus: 104263 - strongSwan CVE-2018-5388 Buffer Underflow Vulnerability

See also: 🔍

Entryinfo

Created: 06/01/2018 10:40
Updated: 01/27/2025 06:05
Changes: 06/01/2018 10:40 (79), 02/10/2020 17:13 (5), 03/19/2023 08:26 (4), 01/27/2025 06:05 (16)
Complete: 🔍
Cache ID: 216:DD3:103

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