strongSwan 5.9.8/5.9.9 TLS-based EAP expired pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability was found in strongSwan 5.9.8/5.9.9. It has been declared as critical. This vulnerability affects unknown code of the component TLS-based EAP. Such manipulation leads to expired pointer dereference. This vulnerability is listed as CVE-2023-26463. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in strongSwan 5.9.8/5.9.9 (Network Encryption Software) and classified as critical. Affected by this issue is some unknown processing of the component TLS-based EAP. The manipulation with an unknown input leads to a expired pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-825. The product dereferences a pointer that contains a location for memory that was previously valid, but is no longer valid. Impacted is confidentiality, integrity, and availability. CVE summarizes:

strongSwan 5.9.8 and 5.9.9 potentially allows remote code execution because it uses a variable named "public" for two different purposes within the same function. There is initially incorrect access control, later followed by an expired pointer dereference. One attack vector is sending an untrusted client certificate during EAP-TLS. A server is affected only if it loads plugins that implement TLS-based EAP methods (EAP-TLS, EAP-TTLS, EAP-PEAP, or EAP-TNC). This is fixed in 5.9.10.

The weakness was presented 03/06/2023. The advisory is shared for download at strongswan.org. This vulnerability is handled as CVE-2023-26463. There are neither technical details nor an exploit publicly available.

Upgrading to version 5.9.10 eliminates this vulnerability. The upgrade is hosted for download at strongswan.org.

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Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Expired pointer dereference
CWE: CWE-825
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: strongSwan 5.9.10

Timelineinfo

02/23/2023 🔍
03/06/2023 +11 days 🔍
03/06/2023 +0 days 🔍
02/08/2025 +705 days 🔍

Sourcesinfo

Advisory: strongswan.org
Status: Confirmed

CVE: CVE-2023-26463 (🔍)
GCVE (CVE): GCVE-0-2023-26463
GCVE (VulDB): GCVE-100-222368

Entryinfo

Created: 03/06/2023 15:21
Updated: 02/08/2025 06:25
Changes: 03/06/2023 15:21 (39), 03/31/2023 17:55 (1), 02/08/2025 06:25 (27)
Complete: 🔍
Cache ID: 216::103

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